ZTP1117SA

ZTP1117 1A Low Dropout Positive Voltage Regulator FEATURES DESCRIPTION ● Adjustable The ZTP1117 series of positive adjustable and fixed regulators are designed to provide 1A with high efficiency. All internal circuitry is designed to operate down to 1.4V input to output differential. On-chip trimming adjusts the reference voltage to 1%. Current limit the typical value of 1.5A allows to minimize the stress on both the regulator and the power source circuitry under overload conditions. or Fixed Output ● Output Current of 1A ● Low Dropout, 1.2 V typ. at 1A Output Current ● 0.04% Line Regulation ● 0.2 % Load Regulation ● 100% Thermal Limit Burn-In ● Fast Transient Response ● Current-Limit : 1A Typ. at TJ = 25°C ● On-Chip Thermal Limiting: 150°C Typ. ● Standard 3-pin SOT-223 TO-252 Power Packages. Pins Configuration SOT-223 APPLICATIONS ● High Efficiency Linear Regulators ● Post Regulators for Switching Supplies ● Adjustable Power Supply 1 2 3 ORDERING INFORMATION PART PACKAGE RoHS ADJ/GND OUTPUT Ship, Quantity ZTP1117SA SOT-223 Yes Tape and Reel, 3000 ZTP1117Sxx SOT-223 Yes Tape and Reel, 3000 ZTP1117UA TO-252 Yes Tape and Reel, 3000 ZTP1117Uxx TO-252 Yes Tape and Reel, 3000 INPUT TO-252 The last letter(s) of PART No. denote the Output Voltage: A = adjustable; xx = 12: 1.2V; xx = 15: 1.5V;xx = 18: 1.8V; xx = 25: 2.5V; xx = 33: 3.3V; xx = 50: 5.0V. Typical Application Circuits Fixed Voltage Regulator Adjustable Voltage Regulator TAB TAB VIN > 4.7V 3 IN C1 10μF MLCC ZTP1117 OUT 2 GND 1 VOUT = 3.3V C2 10μF Min MLCC Notes: 1) C1 needed if device is far from filter capacitors. 2) C2 minimum value required for stability. DS-21 Copyright © ZillTek Technology Corp. VIN > 4.85V 3 IN C1 10μF MLCC ZTP1117 OUT Adj 1 R1 133Ω, 1% VOUT = VREF × (1 + R2/R1) + IADJ ×R2 -1- VOUT = 3.45V 2 C2 10μF Min MLCC R2 232Ω, 1% 4F-3, No.5, Technology Rd., Science-Based Industrial Park, Hsinchu 30078, Taiwan Tel: (886) 3577 7509; Fax: (886) 3577 7390 Email: sales@zilltek.com ZTP1117 Absolute Maximum Ratings Electro-Static Discharge Sensitivity Power Dissipation PD ………………………… Internally Limited Input Voltage VIN ………………………………………………….. +20V Operating Junction Temperature TJ …… –40°C to +125°C Storage Temperature TSTG …………............ –65°C to +150°C Lead Temperature (Soldering 10sec) ………………… +300°C Minimum ESD Rating (HBM) VESD ……...…………………… 3kV This integrated circuit can be damaged by ESD. It is recommended that all integrated circuits be handled with proper precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Pins Description Pin Description 1 ADJ/GND 2 OUTPUT 3 INPUT Package Thermal Characteristics Thermal Resistance, SOT-223, θJA ............…………. 63°C/W Thermal Resistance, TO-252, θJA ………………………. 50°C/W Thermal Resistance, SOT-223, θJC ……………………… 27°C/W Thermal Resistance, TO-252, θJC ………………………. 10°C/W Functional Block Diagram Vin + _ Vout For fixed voltage device For adjustable voltage device ADJ DS-21 Copyright © ZillTek Technology Corp. GND -2- 4F-3, No.5, Technology Rd., Science-Based Industrial Park, Hsinchu 30078, Taiwan Tel: (886) 3577 7509; Fax: (886) 3577 7390 Email: sales@zilltek.com ZTP1117 Electrical Specifications (ILOAD = 0mA, TJ = +25°C, unless otherwise noted.) PARAMETER Device Operating Voltage Output Voltage VIN Adj Reference Voltage (Note 1) Adj TEST CONDITIONS Adjust Pin Current Adj Current Limit Ripple Rejection (Note 2) All All VIN – VOUT = 2.5V, ILOAD = 1A All fixed version VOUT = +1.2V Output Voltage Accuracy (at Wafer Testing) All Line Regulation All Load Regulation (Note 1) Minimum Load Current Ground Pin Current All Adj All fixed version Dropout Voltage (Note 1, 3) All Temperature Coefficient Current-Limit On-Chip Thermal Limiting All All All TYP MAX UNIT 1.25 1.232 V V 1.250 16 14.6 1.268 1.225 1.250 1.275 F Maximum PD < 2.25W VIN = +5V, ILOAD = 10mA 1.5V ≤ VIN – VOUT ≤ 10V, ILOAD = 10mA to 1A VIN = VOUT + 1.5V, Variation from nominal VOUT 1.5V ≤ VIN – VOUT ≤ 10V, ILOAD = 0mA to 1A, Variation from nominal VOUT VIN = VOUT + 1.5V, ILOAD = 10mA ILOAD = 10mA, 1.5V ≤ VIN – VOUT ≤ 10V VIN = VOUT + 1.5V, ILOAD = 10mA to 1A VIN = +5V, VADJ = 0V VIN = VOUT + 1.5V, ILOAD = 10mA to 1A 1.5V ≤ VIN – VOUT ≤ 10V, ILOAD = 10mA VIN – VOUT = 1.5V Output Voltage (Note 1) MIN ILOAD = 500mA ILOAD = 1A VIN – VOUT = 1.5V, ILOAD = 10mA TJ = 25°C F F –1.5 +1.5 –2 +2 –3 +2 –0.6% V % 0 +0.6% % F 0.04 0.238 F 0.4 0.8 F 2 7 mA F 3.5 6 mA F 35 60 μA 1.5 2 A % F 1 60 F F F dB 1.15 1.20 1 150 1.25 1.40 0.015 V V %/°C A °C The “F” denotes the specifications which apply over the full temperature range: −40°C ≤ TJ ≤ +125°C. Note 1: Low duty pulse testing with Kelvin connections required. Note 2: 120Hz input ripple (CADJ for ADJ = 25μF). Note 3: ΔVOUT, ΔVREF = 1%. DS-21 Copyright © ZillTek Technology Corp. -3- 4F-3, No.5, Technology Rd., Science-Based Industrial Park, Hsinchu 30078, Taiwan Tel: (886) 3577 7509; Fax: (886) 3577 7390 Email: sales@zilltek.com ZTP1117 Load Transient Response Line Transient Response Load Regulation (Input Voltage = 5V) Line Regulation (Output Current = 100mA) 3.325 3.324 3.323 3.322 3.321 3.32 3.319 3.318 3.317 3.316 3.315 3.314 3.321 ZTP1117S33 ZTP1117S33 3.32 3.319 Output Voltage (V) Output Voltage (V) Typical Characteristics 3.318 3.317 3.316 3.315 3.314 0 0.2 0.4 0.6 0.8 1 5 7 9 11 13 15 Input Voltage (V) Output Current (A) Output Voltage vs. Input Voltage Input Current vs. Input Voltage 4 6 3.3V 3.5 5 2.5V 2.5 Input Current (mA) Output Voltage (V) 3 1.8V 2 1.5 1 0.5 0 ZTP1117S33 4 3 2 1 0 0 1 2 3 4 5 6 0 Input Voltage (V) DS-21 Copyright © ZillTek Technology Corp. 2 4 6 8 10 12 14 16 Input Voltage (V) -4- 4F-3, No.5, Technology Rd., Science-Based Industrial Park, Hsinchu 30078, Taiwan Tel: (886) 3577 7509; Fax: (886) 3577 7390 Email: sales@zilltek.com ZTP1117 Output Voltage vs. Temperature (3.3V) 3 3.4 2.5 3.35 2 3.3 Output Voltage (V) Current Limit (A) Current Limit vs. Input Voltage 1.5 1 ZTP1117S33 0.5 0 5 7 9 11 13 3.25 3.2 3.15 3.1 15 Input Voltage (V) -50 -25 0 25 50 75 100 125 Temperature (°C) Output Voltage vs. Temperature (1.8V) 2.65 1.95 2.6 1.9 2.55 1.85 Output Voltage (V) Output Voltage (V) Output Voltage vs. Temperature (2.5V) 2.5 2.45 2.4 1.8 1.75 1.7 1.65 2.35 -50 -25 0 25 50 75 100 -50 125 -25 0 25 50 75 100 125 Temperature (°C) Temperature (°C) PSRR vs. Frequency 90 80 PSRR (dB) 70 60 50 40 30 20 0.01 0.1 1 10 100 Frequency (KHz) DS-21 Copyright © ZillTek Technology Corp. -5- 4F-3, No.5, Technology Rd., Science-Based Industrial Park, Hsinchu 30078, Taiwan Tel: (886) 3577 7509; Fax: (886) 3577 7390 Email: sales@zilltek.com ZTP1117 divider ratio, the effective resistance between the regulator and the load would be: APPLICATION INFORMATION Output Voltage RP × (1 + R2/R1), RP = Parasitic Line Resistance The ZTP1117 develops a 1.25V reference voltage between the output and the adjust terminal. By placing a resistor between these two terminals, a constant current is caused to flow through R1 and down through R2 to set the overall output voltage. Normally, this current is chosen to be the specified minimum load current of 10mA. For fixed voltage devices R1 and R2 are included in the device. ZTP1117 VIN IN Input Capacitor An input capacitor of 10μF or greater is recommended. Tantalum or aluminum electrolytic capacitors can be used for bypassing. Larger Values will improve ripple rejection by bypassing the input to the regulator. Output Capacitor The ZTP1117 requires an output capacitor to maintain stability and improve transient response. Proper capacitor selection is important to ensure proper operation. The ZTP1117 output capacitor selection is dependent upon the ESR (equivalent series resistance) of the output capacitor to maintain stability. When the output capacitor is 10μF or greater, the output capacitor should have an ESR less than 1Ω. This will improve transient response as well as promote stability. A low-ESR solid tantalum capacitor works extremely well and provides good transient response and stability over temperature. Aluminum electrolytic can also be used, as long as the ESR of the capacitor is