TLF1963TEATMA1

TLF1963 Low Dropout Linear Voltage Post Regulator TLF1963TB TLF1963TE Data Sheet Rev. 1.0, 2012-11-08 Automotive Power TLF1963 Table of Contents Table of Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 3.1 3.2 3.3 3.4 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pin Assignment TLF1963TB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pin Definitions and Functions TLF1963TB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pin Assignment TLF1963TE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pin Definitions and Functions TLF1963TE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 5 6 6 4 4.1 4.2 4.3 General Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7 8 8 5 5.1 5.2 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Electrical Characteristics Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6 6.1 6.2 6.3 6.4 6.5 6.6 Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjustable Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output Capacitance and Transient Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overload Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output Voltage Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Protection Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Further Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 8 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Data Sheet 2 18 18 19 19 19 19 20 Rev. 1.0, 2012-11-08 Low Dropout Linear Voltage Post Regulator 1 TLF1963 Overview Features • • • • • • • • • • • • • • • • Adjustable Output Voltage Output Voltage Tolerance at small loads of ±1.5 % Output Current Capability up to 1.5 A Very Low Dropout Voltage of 340 mV Extended Operating Range Starting at 1.7 V Low Noise of typ. 40 µVRMS (10 Hz to 100 kHz) Small Output Capacitor for Stability 10 µF Suitable for Ceramic Output Capacitors Enable Functionality Overtemperature Shutdown Reverse Polarity Protection Output Current Limitation Wide Temperature Range From -40 °C up to 150 °C Suitable for use in automotive electronics as Post Regulator Green Product (RoHS compliant) AEC Qualified PG-TO263-5 Functional Description TLF1963 is a low dropout voltage regulator available in PG-TO263-5 and PG-TO252-5 PG-TO252-5 SMD package. The IC regulates an input voltage VI in the range of 2.5 V < VI < 20 V to an adjustable output voltage of 1.21 V < VQ,nom < VI -Vdr. The device is capable to supply loads up to 1.5 A. The regulator can be enabled and disabled via the Enable input. The integrated output current limitation and the overtemperature shutdown will protect the device against failures like output short circuit to GND, overcurrent and overtemperature. The TLF1963 provides the ideal solution for systems requiring several supply voltages. With its adjust feature the regulator can provide all supply voltages between 1.21 V and the available input voltage, this offers a high flexibility to the system designer. Choosing External Components The input capacitor CI is necessary for compensating line influences. The output capacitor CQ is necessary for the stability of the regulating circuit. Stability is guaranteed at values specified in “Functional Range” on Page 8 within the whole operating temperature range. Type Package Marking TLF1963TB PG-TO263-5 T1963V TLF1963TE PG-TO252-5 T1963V Data Sheet 3 Rev. 1.0, 2012-11-08 TLF1963 Block Diagram 2 Block Diagram TLF1963 ADJ IN Reverse Polarity Protection 4 Q 2 EN 4 Bias Voltage reference Saturation Control Over Current Protection Temperature Protection Error Amplifier 5 ADJ 3 GND Figure 1 Data Sheet Block Diagram 4 Rev. 1.0, 2012-11-08 TLF1963 Pin Configuration 3 Pin Configuration 3.1 Pin Assignment TLF1963TB GND 1 5 GND EN I ADJ Q Figure 2 Pin Configuration PG-TO263-5 3.2 Pin Definitions and Functions TLF1963TB Pin Symbol Function 1 EN Enable; A low signal disables the IC. A high signal switches it on. Connect to the input I, if enable functionality is not required. 2 I Input voltage; IC supply. For compensating line influences, a capacitor close to the IC pins is recommended. 3 GND Ground 4 Q Output voltage; Connect a capacitor between Q and GND close to the IC terminals, respecting the values given for its capacitance CQ and ESR given in the table “Functional Range” on Page 8 5 ADJ Adjust Input; Connect an external voltage divider from Q to GND to determine the output voltage. By connecting the output pin Q directly to the adjust pin ADJ without resistors an ouput voltage equal to the reference voltage VADJ = 1.21 V is determined. TAB GND Ground Data Sheet 5 Rev. 1.0, 2012-11-08 TLF1963 Pin Configuration 3.3 Pin Assignment TLF1963TE GND 1 5 EN ADJ Q I Figure 3 Pin Configuration PG-TO252-5 3.4 Pin Definitions and Functions TLF1963TE Pin Symbol Function 1 EN Enable; A low signal disables the IC. A high signal switches it on. Connect to the input I, if enable functionality is not required. 2 I Input voltage; IC supply. For compensating line influences, a capacitor close to the IC pins is recommended. 3 GND Ground 4 Q Output voltage; Connect a capacitor between Q and GND close to the IC terminals, respecting the values given for its capacitance CQ and ESR given in the table “Functional Range” on Page 8 5 ADJ Adjust Input; Connect an external voltage divider from Q to GND to determine the output voltage. By connecting the output pin Q directly to the adjust pin ADJ without resistors an ouput voltage equal to the reference voltage VADJ = 1.21 V is determined. TAB GND Ground Data Sheet 6 Rev. 1.0, 2012-11-08 TLF1963 General Product Characteristics 4 General Product Characteristics 4.1 Absolute Maximum Ratings Table 1 Absolute Maximum Ratings 1) Tj = -40 °C to +150 °C; all voltages with respect to ground (unless otherwise specified) Pos. Parameter Symbol Limit Values Min. Max. Unit Conditions Input, Enable 4.1.1 Voltage VI, VEN -20 20 V – Voltage VADJ -7 7 V – Voltage VQ -20 20 V – Tj Tstg -40 150 °C – -50 150 °C – VESD VESD -2 2 kV HBM2) -750 750 V CDM3) Adjust 4.1.2 Output 4.1.3 Temperatures 4.1.4 Junction Temperature 4.1.5 Storage Temperature ESD Susceptibility 4.1.6 ESD Resistivity 4.1.7 ESD Resistivity 1) Not subject to production test, specified by design. 2) ESD HBM Test according AEC-Q100-002 - JESD22-A114 (1.5 kOhm, 100 pF) 3) ESD susceptibility, Charged Device Model “CDM” EIA/JESD22-C101 or ESDA STM5.3.1 Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are not designed for continuous repetitive operation. Data Sheet 7 Rev. 1.0, 2012-11-08 TLF1963 General Product Characteristics 4.2 Functional Range Table 2 Functional Range Pos. Parameter 4.2.1 Input voltage 4.2.2 Output Capacitor’s Requirements for Stability 4.2.3 Junction temperature Symbol VI CQ ESR(CQ) Tj Limit Values Unit Conditions Min. Max. 2.5 20 V – 10 – µF –1) – 3 Ω –2) -40 150 °C 1) the minimum output capacitance requirement is applicable for a worst case capacitance tolerance of 30% 2) relevant ESR value at f = 10 kHz Note: Within the functional or operating range, the IC operates as described in the circuit description. The electrical characteristics are specified within the conditions given in the Electrical Characteristics table. 4.3 Thermal Resistance Note: This thermal data was generated in accordance with JEDEC JESD51 standards. For more information, go to www.jedec.org. Table 3 Pos. Thermal Resistance Parameter Symbol Limit Values Min. Typ. Max. Unit Conditions Package PG-TO263-5 4.3.1 Junction to Case1) RthJC – 0.84 – K/W measured to heat slug 4.3.2 Junction to Ambient1) RthJA – 19 – K/W 2) 4.3.3 – 64 – K/W footprint only3) 4.3.4 – 36 – K/W 300 mm² heatsink area3) 4.3.5 – 29 – K/W 600 mm² heatsink area3) Package PG-TO252-5 4.3.6 Junction to Case1) RthJC – 0.78 – K/W measured to heat slug 4.3.7 Junction to Ambient1) RthJA – 24 – K/W 2) 4.3.8 – 95 – K/W footprint only3) 4.3.9 – 50 – K/W 300 mm² heatsink area3) 4.3.10 – 38 – K/W 600 mm² heatsink area3) 1) Not subject to production test, specified by design. 2) Specified RthJA value is according to Jedec JESD51-2,-5,-7 at natural convection on FR4 2s2p board; The Product (Chip+Package) was simulated on a 76.2 x 114.3 x 1.5 mm³ board with 2 inner copper layers (2 x 70 µm Cu, 2 x 35 µm Cu). Where applicable a thermal via array under the exposed pad contacted the first inner copper layer. 3) Specified RthJA value is according to Jedec JESD 51-3 at natural convection on FR4 1s0p board; The Product (Chip+Package) was simulated on a 76.2 × 114.3 × 1.5 mm3 board with 1 copper layer (1 x 70 µm Cu). Data Sheet 8 Rev. 1.0, 2012-11-08 TLF1963 Electrical Characteristics 5 Electrical Characteristics 5.1 Electrical Characteristics Voltage Regulator Table 4 Electrical Characteristics: VI = 2.5 V - 20 V, Tj = -40 °C to +150 °C, all voltages with respect to ground, positive current flowing out of the pin (unless otherwise specified) Pos. 5.1.1 Parameter Symbol Min. Typ. Max. Min. Input Voltage 1) 2) VI,min VI,min VADJ – 1.7 – 2.1 5.1.2 5.1.3 Adjustable Pin Voltage 1) 3) 5.1.4 Limit Values 1.192 1.21 Unit Conditions – V 2.5 V IQ = 0.5 A; Tj = 25 °C IQ = 1.5 A VI = 2.21 to 20 V; IQ = 1 mA; Tj = 25 °C IQ = 1 mA to 1.5 A VI = 2.21 to 20 V; IQ = 1 mA IQ = 1 mA to 1.5 A; VI = 2.5 V; Tj = 25 °C IQ = 1 mA to 1.5 A; VI = 2.5 V IQ = 1 mA; Tj = 25 °C IQ = 1 mA IQ = 100 mA; Tj = 25 °C IQ = 100 mA IQ = 500 mA; Tj = 25 °C IQ = 500 mA IQ = 1.5 A; Tj = 25 °C IQ = 1.5 A IQ = 0 mA IQ = 1 mA IQ = 100 mA IQ = 500 mA IQ = 1.5 A CQ = 10 µF; IQ = 1.5 A; 1.228 V 1.174 1.21 1.246 V 5.1.5 Line regulation 1) ΔVQ,line – 1.0 3 mV 5.1.6 Load regulation 1) ΔVQ,load – 2 8 mV – – 12 mV – 0.01 0.03 V – – 0.04 V 5.1.10 – 0.03 0.05 V 5.1.11 – – 0.09 V 5.1.12 – 0.13 0.25 V 5.1.13 – – 0.27 V 5.1.14 – 0.34 0.45 V – – 0.55 V – 1.0 1.5 mA – 1.1 1.7 mA 5.1.18 – 3.8 5.0 mA 5.1.19 – 15 22 mA 5.1.20 – 80 130 mA – 40 – µVRMS 5.1.7 5.1.8 5.1.9 Dropout voltage 2) 4) 5) VI = VQ,nom Vdr 5.1.15 5.1.16 GND Pin Current 5.1.17 VI = VQ,nom + 1 V 5.1.21 4) 6) Iq VQ,noise Output Voltage Noise BW = 10 Hz to 100 kHz 5.1.22 ADJ Pin Bias Current 5.1.23 Enable Threshold 5.1.24 5.1.25 EN Pin current 5.1.26 Data Sheet 8) 1) 7) IADJ – 1 2 µA – VEN,LH VEN,HL IEN – 1.4 2 V 0.8 1.3 – V – 0 0.2 µA – 2.5 20 µA VQ = Off to On VQ = On to Off VEN = 0 V VEN ≤ 20 V 9 Rev. 1.0, 2012-11-08 TLF1963 Electrical Characteristics Table 4 Electrical Characteristics: (cont’d) VI = 2.5 V - 20 V, Tj = -40 °C to +150 °C, all voltages with respect to ground, positive current flowing out of the pin (unless otherwise specified) Pos. Parameter Symbol Unit Conditions VI = 6 V; VEN = 0 V; Tj ≤ 85 °C Tj = 25 °C; fr = 120 Hz; IQ = 0.75 A; VI - VQ = 1.5 V; Vr = 0.5 Vpp Tj = 25 °C; VI = 7 V; VQ = 0 V VI = VQ,nom + 1 V; dVQ = -0.1 V VI = -20 V; VQ = 0 V Tj = 25 °C; VQ = 1.21 V; VI < 1.21 V VQ = 1.21 V; VI < 1.21 V Min. Typ. Max. – 0.01 1 µA 55 67 – dB IQ – 2 – A IQ 1.6 – – A Iq,off 5.1.27 Quiescent Current in Shutdown 9) 5.1.28 Power Supply ripple rejection 10) PSRR 5.1.29 Output current limitation 5.1.30 Limit Values 5.1.31 Input Reverse Leakage Current II,rev – – 2 mA 5.1.32 Reverse Output Current 11) – 300 600 µA – – 1 mA 5.1.33 IQ,rev 1) 2) The TLF1963 is tested and specified for these conditions with the ADJ pin connected to the Q pin. For TLF1963 dropout voltage will be limited by the minimum input voltage specification under some output voltage/load conditions. 3) Operating conditions are limited by maximum junction temperature. The regulated output voltage specification will not apply for all possible combinations of input voltage and output current. When operating at maximum input voltage, the output current range must be limited. When operating at maximum output current, the input voltage range must be limited. 4) To satisfy requirements for minimum input voltage, the TLF1963 is tested and specified for these conditions with an external resistor divider (two 4.12 kΩ resistors) for an output voltage of 2.4 V. The external resistor divider will add a 300 µA DC load on the output. 5) Dropout voltage is the minimum input to output voltage differential needed to maintain regulation at a specified output current. In dropout, the output voltage will be equal to: VI – Vdr 6) GND pin current is tested with VI = VQ,nom + 1 V and a current source load. 7) ADJ pin bias current flows into the ADJ pin. 8) EN pin current flows into the EN pin. 9) Specified by design, tested at Tamb = 25 °C 10) Not subject to production test, specified by design. 11) Reverse output current is tested with the IN pin grounded and the Q pin forced to the rated output voltage. This current flows into the Q pin and out the GND pin Data Sheet 10 Rev. 1.0, 2012-11-08 TLF1963 Electrical Characteristics 5.2 Typical Performance Characteristics Dropout Voltage VDR versus Output Current IQ Guaranteed Dropout Voltage Vdr versus Output Current IQ 550 550 500 500 450 450 400 400 350 350 Vdr [mV] Vdr [mV] Δ : Testpoint 300 250 200 300 250 200 150 150 Tj = −40 °C 100 Tj = 25 °C 100 50 Tj = 125 °C 50 Tj = 25 °C Tj = 150 °C 0 0 0.5 1 Tj = 150 °C 0 1.5 0 0.5 IQ [A] Dropout Voltage Vdr versus Temperature Tj 450 1.5 Quiescent Current Iq versus Temperature Tj 550 500 1 IQ [A] 2 IQ = 100 mA 1.8 IQ = 500 mA IQ = 1.5 A 1.6 400 1.4 350 Iq [mA] Vdr [mV] 1.2 300 250 1 0.8 200 0.6 150 0.4 100 0 −50 Data Sheet VI = 6 V IQ = 0 mA . VEN = VI 0.2 50 0 50 Tj [°C] 100 0 −50 150 11 0 50 Tj [°C] 100 150 Rev. 1.0, 2012-11-08 TLF1963 Electrical Characteristics Adjustable Voltage VADJ versus Temperature Tj Quiescent Current Iq versus Input Voltage VI (VQ,nom = 2.5 V) 1.22 25 VQ,nom = 2.5 V Tj = 25 °C IQ = 0 mA 1.215 20 1.21 Iq [mA] VADJ [V] 15 1.205 10 1.2 IQ = 1 mA 1.195 5 IQ = 100 mA IQ = 500 mA IQ = 1.5 A 1.19 −50 0 50 Tj [°C] 100 0 150 0 4 6 8 10 VI [V] Quiescent Current Iq versus Input Voltage VI (VQ,nom = 1.21 V) GND Pin Current IGND versus Output Current IQ 1.8 120 VQ,nom = 1.21 V Tj = 25 °C IQ = 0 mA 1.6 Tj = −40 °C Tj = 25 °C Tj = 125 °C 100 1.4 Tj = 150 °C 1.2 80 IGND [mA] Iq [mA] 2 1 0.8 0.6 60 40 0.4 20 0.2 VI = VQ,nom + 1 V 0 0 2 4 6 8 0 10 VI [V] Data Sheet 0 0.5 1 1.5 IQ [A] 12 Rev. 1.0, 2012-11-08 TLF1963 Electrical Characteristics GND Pin Current IGND versus Input Voltage VI (VQ,nom = 2.5 V) GND Pin Current IGND versus Input Voltage VI (VQ,nom = 1.21 V) 30 IQ = 1 mA IQ = 1 mA IQ = 100 mA IQ = 100 mA 25 IQ = 500 mA 25 IQ = 500 mA 20 VQ,nom = 2.5 V Tj = 25 °C 20 VQ,nom = 1.21 V Tj = 25 °C IGND [mA] IGND [mA] 30 15 15 10 10 5 5 0 0 2 4 6 8 0 10 0 2 4 VI [V] GND Pin Current IGND versus Input Voltage VI (VQ,nom = 2.5 V) 10 100 VQ,nom = 2.5 V Tj = 25 °C 90 80 70 70 60 IQ = 100 mA 40 IQ = 1.5 A IGND [mA] IQ = 1 mA 50 IQ = 500 mA IQ = 100 mA 40 IQ = 1.5 A 30 20 20 10 10 2 4 6 8 0 10 VI [V] Data Sheet IQ = 1 mA 50 30 0 VQ,nom = 1.21 V Tj = 25 °C 90 80 60 IGND [mA] 8 GND Pin Current IGND versus Input Voltage VI (VQ,nom = 1.21 V) 100 0 6 VI [V] IQ = 500 mA 0 2 4 6 8 10 VI [V] 13 Rev. 1.0, 2012-11-08 TLF1963 Electrical Characteristics EN Pin Thresholds VEN,th versus Temperature Tj EN Pin Input Current IEN versus EN Pin Voltage VEN 2 3.5 Threshold Off−to−On Threshold On−to−Off 3 1.8 2.5 IEN [µA] VEN,th [V] 1.6 1.4 2 1.5 1.2 1 1 0.8 −50 Tj = 25 °C VI = 20 V 0.5 0 50 Tj [°C] 100 0 150 EN Pin Input Current IEN versus Temperature Tj 0 5 10 VEN [V] 15 20 Adjustable Pin Bias Current IADJ versus Temperature Tj 1.2 5 4.5 1 4 3.5 0.8 IADJ [µA] IEN [µA] 3 2.5 0.6 2 0.4 1.5 1 0.2 0.5 VEN = 20 V . 0 −50 Data Sheet 0 50 Tj [°C] 100 0 −50 150 14 0 50 Tj [°C] 100 150 Rev. 1.0, 2012-11-08 TLF1963 Electrical Characteristics Current Limit IQ,max versus Input / Output Differential VIN - VQ Current Limit IQ,max versus Temperature Tj 3 3.5 ΔVQ = −100 mV . VI = 7 V VQ = 0 V . 3 2.5 2.5 IQ,max [A] IQ,max [A] 2 1.5 2 1.5 1 1 Tj = −40 °C Tj = 25 °C 0.5 0.5 Tj = 125 °C Tj = 150 °C 0 0 5 10 VIN − VQ [V] 15 0 −50 20 Reverse Output Current IQ,rev versus Output Voltage VQ 50 Tj [°C] 150 1 VI = 0 V 4.5 Tj = 25 °C . 0.9 0.8 3.5 0.7 3 0.6 IQ,rev [mA] 4 2.5 0.5 2 0.4 1.5 0.3 1 0.2 VQ.nom = 1.21 V 0.5 0.1 VIN = 0 V VQ = 1.21 V . VQ.nom = 2.5 V 0 100 Reverse Output Current IQ,rev versus Temperature Tj 5 IQ,rev [mA] 0 0 2 4 6 8 0 −50 10 VQ [V] Data Sheet 15 0 50 Tj [°C] 100 150 Rev. 1.0, 2012-11-08 TLF1963 Electrical Characteristics Ripple Rejection PSRR versus Frequency f Ripple Rejection PSRR versus Temperature Tj 70 80 IL = 0.75 A VI = VQnom + 1 V Tj = 25 °C CQ = 10 µF Ceramic . 70 68 66 60 64 PSRR [dB] PSRR [dB] 50 40 62 60 30 58 20 56 IL = 0.75 A VI = VQ,nom + 1 V . fRipple = 120 Hz 10 54 0 10 100 1k 10k 100k −50 1M 0 f [Hz] 3 10 2.5 8 2 6 1.5 1 4 0 IQ = 1 mA dILoad = 1 mA to 1.5 A . VI = 2.7 V VQ,nom = 1.21 V IQ = 500 mA IQ = 1.5 A Data Sheet 150 2 0.5 0 −50 100 Load Regulation dVLoad versus Temperature Tj dVLoad [mV] VI,min [V] Minimum Input Voltage VI,min versus Temperature Tj 50 Tj [°C] 0 50 Tj [°C] 100 −2 −50 150 16 0 50 Tj [°C] 100 150 Rev. 1.0, 2012-11-08 TLF1963 Electrical Characteristics Equivalent Series Resistance ESR(CQ) vs Load Current IQ 10 Max ESR Min ESR 9 8 ESR(CQ) [Ω] 7 6 5 4 3 2 CQ = 10 µF . 1 0 1m 10m 100m 1 IQ [A] Data Sheet 17 Rev. 1.0, 2012-11-08 TLF1963 Application Information 6 Application Information Note: The following information is given as a hint for the implementation of the device only and shall not be regarded as a description or warranty of a certain functionality, condition or quality of the device. The TLF1963 is an 1.5 A low dropout regulator optimized for fast transient response. The device is capable of supplying 1.5 A at a very low dropout voltage up to a Junction Temperature of 150 °C. The low operating quiescent current of 1 mA drops to less than 1 µA in case the device is disabled. In addition to the low quiescent current, the TLF1963 incorporates several protection features which make them ideal for use in battery-powered systems. The device is protected against both reverse input and reverse output voltages. Note: This is a very simplified example of an application circuit. The function must be verified in the real application. VBat 2 TLF1963 VQ Q 4 I 10µF R2 ADJ 10 µF 5 R1 EN 1 GND 3 Figure 4 Application Diagram 6.1 Adjustable Operation The TLF1963 has an output voltage range of 1.21 V to VI - Vdr < 20 V. The output voltage is set by the ratio of two external resistors as shown in Figure 4. The device serves the output to maintain the voltage at the ADJ pin at 1.21 V referenced to ground. The current in R1 is then equal to 1.21 V / R1 and the current in R2 is the current in R1 plus the ADJ pin bias current. The ADJ pin bias current, 1 µA at 25 °C, flows through R2 into the ADJ pin. The output voltage can be calculated using the formula in Equation (1). R V Q = V ADJ ⋅ ⎛ 1 + -----2-⎞ + I ADJ ⋅ R 2 ⎝ R ⎠ (1) 1 VADJ = 1.21 V typical IADJ = 1 µA at 25 °C The value of R1 is recommended to be smaller than 12 kΩ to minimize errors in the output voltage caused by the ADJ pin bias current. Note that in shutdown the output is turned off and the divider current will be zero. The adjustable device is mainly tested and specified with the ADJ pin connected to the Q pin for an output voltage of 1.21 V. Specifications for output voltages adjusted to greater values than 1.21V will be proportional to the ratio of the desired output voltage to 1.21 V. For example, load regulation for an output current change of 1 mA to 1.5 A is ΔVQ,load = 2 mV typical at VQ,nom = 1.21 V. At VQ,nom = 5 V, load regulation is: ΔVQ,load,5V = (5 V / 1.21 V)•(2 mV) = 8.3 mV Data Sheet 18 Rev. 1.0, 2012-11-08 TLF1963 Application Information 6.2 Output Capacitance and Transient Response The TLF1963 is designed to be stable with a wide range of output capacitors. The ESR of the output capacitor affects stability, most notably with small capacitors. A minimum output capacitor of 10 µF with an ESR in the range of 10 mΩ to 3 Ω is recommended to prevent oscillations. Larger values of output capacitance can decrease the peak deviations and provide improved transient response for larger load current changes. 6.3 Overload Recovery The TLF1963 has a safe operating area protection. The device protects itself by limiting the output current to a maximum and prevent it self against destruction due to overload or short circuits conditions. In this cases the current is limited and the resulting output voltage decreases according to the load down to 0V in a short circuit condition. The TLF1963 can supply the application for all input voltages between 2.5 V up to 20V with currents up to 1.5 A. Of course it needs to be ensured, that the junction temperature stays within the operating range up to 150 °C. For startup conditions with a high load current the TLF1963 is able to start up properly without exeeding the safe operating area. Even imediatly after removal of a short circuit failure case the device is able to start if the load current is very high. The characteristic of the current limitation can by seen in the typical perfomance graphs on Page 15. 6.4 Output Voltage Noise The TLF1963 has been designed to provide low output voltage noise over the 10 Hz to 100 kHz bandwidth while operating at full load. Output voltage noise is typically 40 µVRMS over this frequency bandwidth. For higher output voltages (generated by using a resistor divider), the output voltage noise will be gained up accordingly. Higher values of output voltage noise may be measured when care is not exercised with regards to circuit layout and testing. Crosstalk from nearby traces can induce unwanted noise onto the output of the TLF1963. Power supply ripple rejection must also be considered, because the TLF1963 does not have unlimited power supply ripple rejection and will pass a small portion of the input noise through to the output. 6.5 Protection Features The TLF1963 has several protection features which makes him ideal for use in battery-powered circuits. In addition to the normal protection features associated with monolithic regulators, such as current limiting and thermal limiting, the device is protected against reverse input voltages and reverse output voltages. Current limit protection and thermal overload protection are intended to protect the device against current overload conditions at the output of the device. For normal operation, the junction temperature should not exceed 150 °C. The input of the device will withstand reverse voltages of 20 V. Current flow out of the device will be limited to less than 2 mA in case of an input voltage of -20 V at the Input and no negative voltage will appear at the output. The device will protect both itself and the load. This provides protection against batteries that can be plugged in backward. The output of the TLF1963 can be pulled below ground without damaging the device. If the input is left open circuit or grounded, the output can be pulled below ground by 20 V. The output will act like an open circuit, no current will flow out of the pin. If the input is powered by a voltage source, the output will source the short-circuit current of the device and will protect itself by thermal limiting. In this case, grounding the EN pin will turn off the device and stop the output from sourcing the short-circuit current. The ADJ pin of the adjustable device can be pulled above or below ground by as much as 7 V without damaging the device. If the input is left open circuit or grounded, the ADJ pin will act like an open circuit when pulled below ground and like a resistor (typically 4 kΩ) in series with a diode when pulled above ground. In situations where the ADJ pin is connected to a resistor divider that would pull the ADJ pin above its 7 V clamp voltage if the output is pulled high, the ADJ pin input current must be limited to less than 5 mA. For example, a resistor divider is used to provide a regulated 1.5V output from the 1.21 V reference when the output is forced to Data Sheet 19 Rev. 1.0, 2012-11-08 TLF1963 Application Information 20 V. The top resistor of the resistor divider must be chosen to limit the current into the ADJ pin to less than 5 mA when the ADJ pin is at 7 V. The 13 V difference between Q and ADJ pins divided by the 5 mA maximum current into the ADJ pin yields a minimum top resistor value of 2.6 kΩ. 6.6 • Further Application Information For further information you may contact http://www.infineon.com/ Data Sheet 20 Rev. 1.0, 2012-11-08 TLF1963 Package Outlines 7 Package Outlines 4.4 10 ±0.2 1.27 ±0.1 A 8.5 1) B 0.05 2.4 0.1 2.7 ±0.3 4.7 ±0.5 7.55 1) 9.25 ±0.2 (15) 1±0.3 0...0.3 0...0.15 5 x 0.8 ±0.1 0.5 ±0.1 4 x 1.7 0.25 M A B 8˚ MAX. 1) Typical Metal surface min. X = 7.25, Y = 6.9 All metal surfaces tin plated, except area of cut. Figure 5 Data Sheet 0.1 B GPT09113 PG-TO263-5 SMD Package 21 Rev. 1.0, 2012-11-08 TLF1963 Package Outlines A 5.7 MAX. 1) B 0.5 +0.08 -0.04 0.9 +0.20 -0.01 0...0.15 0.51 MIN. 9.98 ±0.5 6.22 -0.2 0.15 MAX. per side 5 x 0.6 ±0.1 1.14 4.56 0.5 +0.08 -0.04 0.1 B 0.25 M A B 1) Includes mold flashes on each side. All metal surfaces tin plated, except area of cut. Figure 6 2.3 +0.05 -0.10 (5) 0.8 ±0.15 1±0.1 (4.24) 6.5 +0.15 -0.05 PG-TO252-5-13-PO V0.1 PG-TO252-5 SMD Package Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020). For further information on alternative packages, please visit our website: http://www.infineon.com/packages. Data Sheet 22 Dimensions in mm Rev. 1.0, 2012-11-08 TLF1963 Revision History 8 Revision History Revision Date Changes 1.0 2012-11-08 Initial Version of Data Sheet Data Sheet 23 Rev. 1.0, 2012-11-08 Edition 2012-11-08 Published by Infineon Technologies AG 81726 Munich, Germany © 2012 Infineon Technologies AG All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. 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