LX8384-XXCP

A MICROSEMI
 COMPANY LX8384x-xx 5A Low Dropout Positive Regulators P R O D UC TI O N
 The LX8384/84A/84B Series ICs are positive regulators designed to provide 5A output current. These regulators yield higher efficiency than currently available devices with all internal circuitry designed to operate down to a 1V input-to-output differential. In each of these products, the dropout voltage is fully specified as a function of load current. Dropout is guaranteed at a maximum of 1.3V (8384A) and 1.5V (8384) at maximum output current, decreasing at lower load currents. In addition, on-chip trimming adjusts the reference voltage tolerance to 1% maximum at room temperature and 2% maximum over the 0 to 125°C range for the LX8384A, making this ideal for the Pentium P54CVRE specification. The LX8384B offers 0.8% tolerance at room temperature and 1.0% maximum over line, load and temperature. Fixed versions are also available and specified in the Available Options table below. The LX8384/84A/84B Series devices are pin-compatible with earlier 3-terminal regulators, such as the 117 series products, but they do require input and output capacitors. A minimum 10µF capacitor is required on the input and a 15µF or greater on the output of these new devices for stability. Although, these capacitors are generally included in most regulator designs. The LX8384/84A/84B Series quiescent current flows into the load, thereby increasing efficiency. This feature contrasts with PNP regulators where up to 10% of the output current is wasted as quiescent current. The LX8384-xxI is specified over the industrial temperature range of -25°C to 125°C, while the LX8384-xxC/84AxxC/84B-xxC is specified over the commercial range of 0°C to 125°C.  
Three-Terminal Adjustable Or W W W . Microsemi . COM Fixed Output
Guaranteed < 1.3V Headroom a 5A (LX8384A)
Guaranteed 2.0% Max. Reference Tolerance (LX8384A)
Guaranteed 1.0% Max. Reference Tolerance (LX8384B)
0.015% Line Regulation
0.15% Load Regulation  
Pentium Processor VRE ® Application
High Efficiency Linear Regulators
Power Regulators For Switching



IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com Power Supplies Battery Chargers Constant Current Regulators ® Cyrix 6x86™ AMD-K5™ 
    IN 5V + * 1500µ F 6M V1500G X S an yo 121 Ω 0.1% OUT LX 8384A AD J 218 Ω 0.1% + 3.5V at 5A   LX8384/84A/84B-00 LX8384/84A/84B-15 LX8384/84A/84B-33    Adjustable 1.5V 3.3V 1500µ F 5x 6M V1500G X Sanyo Table 1 - Available Options * C apacitors must have < 20m Ω T otal E S R for the V R E Specification An Application of the LX8384A for the Pentium P54C Processors Meeting VRE Specification. LX8384X LX8384X
     Max Ref Max Dropout Accuracy Voltage 0 to 125 2.0% 1.5V 2.0% 1.3V 1.0% 1.3V -25 to 125 2.0% 1.5V TA (°C) DT Plastic TO-252 (D-Pak) 3-Pin LX8384-xxCDT LX8384A-xxCDT LX8384B-xxCDT LX8384-xxIDT P Plastic TO-220 3-Pin LX8384-xxCP LX8384A-xxCP LX8384B-xxCP LX8384-xxIP DD Plastic TO-263 3-Pin LX8384-xxCDD LX8384A-xxCDD LX8384B-xxCDD LX8384-xxIDD Note: Available in Tape & Reel. Append the letter “T” to the part number. (i.e. LX8384-xxCPT) Copyright © 2000 Rev. 2.1d, 2001-03-15 Microsemi Linfinity Microelectronics Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 1 A MICROSEMI
 COMPANY LX8384x-xx 5A Low Dropout Positive Regulators P R O D UC TI O N     
     TA B is V O U T 3 W W W . Microsemi . COM Power Dissipation....................................................................................Internally Limited Input Voltage .................................................................................................................10V Input to Output Voltage Differential..............................................................................10V Operating Junction Temperature Plastic (DT, DD, P Packages)................................................................................ 150°C Storage Temperature Range .......................................................................-65°C to 150 °C Lead Temperature (Soldering, 10 Seconds)............................................................... 300°C Note 1: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of specified terminal. V IN V OUT AD J / GND* 2 1 DD PACKAGE (3-PIN) (Top View) TA B is V O UT 3 V IN V O UT AD J/ G ND *  
 DD Plastic TO-263 3-Pin THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA THERMAL RESISTANCE-JUNCTION TO TAB, θJT Plastic TO-220 3-Pin THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA THERMAL RESISTANCE-JUNCTION TO TAB, θJT 60°C/W 2.7°C/W 60°C/W 2.7°C/W 60°C/W 2.7°C/W 2 1 DT PACKAGE (3-PIN) (Top View) T A B is V O U T 3 P V IN V OUT AD J / G N D* 2 1 DT Plastic TO-252 3-Pin THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA THERMAL RESISTANCE-JUNCTION TO TAB, θJT P PACKAGE (3-PIN) (Top View) *Pin 1 is GND for fixed voltage versions Junction Temperature Calculation: TJ = TA + (PD x θJT). The θJA & θJT numbers are guidelines for the thermal performance of the device/pc-board system. All of the above assume no ambient airflow.  
 V IN B ias C ircuit Therm al Lim it C ircuit Bandgap C ircuit C ontrol C ircuit O utput C ircuit V O UT SO A Protection C ircuit PACKAGE DATA PACKAGE DATA A D J or GND* *Pin 1 is GND for fixed voltage versions C urrent Lim it C ircuit Copyright © 2000 Rev. 2.1d, 2001-03-15 Microsemi Linfinity Microelectronics Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 2 A MICROSEMI
 COMPANY LX8384x-xx 5A Low Dropout Positive Regulators P R O D UC TI O N    Unless otherwise specified, the following specifications apply over the operating ambient temperature for the LX8384x-xxC with 0°C ≤ TA ≤ 125°C and the LX8384-xxI with -25°C ≤ TA ≤ 125°C except where otherwise noted. Test conditions: VIN -VOUT = 3V; IOUT = 5A. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature. Parameter Symbol Test Conditions LX8384x-xx Typ Max 1.250 1.250 1.250 1.250 0.015 0.035 0.15 0.01 65 20 10mA < IOUT < IOUT(MAX), 1.3V < (VIN -VOUT), VIN VREF, VIN - VOUT = 3V, 10mA < IOUT < 5A TA = 25°C, 20ms pulse VOUT = 5V, f= 120Hz, COUT = 100µF Tantalum, VIN = 6.5V, CADJ = 10µF, IOUT = 5A IADJ 1.238 1.225 1.240 1.238 V V V V % % % %/W dB µA µA V V mA A A % % % Line Regulation (Note 2) Load Regulation (Note 2) Thermal Regulation Ripple Rejection (Note 3) Adjust Pin Current Adjust Pin Current Change (Note 4) Dropout Voltage LX8384-00 LX8384A/84B-00 Minimum Load Current Maximum Output Current Long Term Stability (Note 3)
REF (VIN)
REF
OUT (Pwr) (IOUT)
ADJ
 IOUT(MIN) IOUT(MAX)
REF = 1%, IOUT = 5A
REF = 1%, IOUT = 5A VIN < 10V (VIN - VOUT) < 7V (VIN - VOUT) < 10V TA = 125°C, 1000 hours
Temperature Stbility (Note 3) RMS Output Noise (% of VOUT)
OUT(RMS) TA = 25°C, 10Hz < f < 10kHz (Note 3) LX8384-15 / 8384A-15 / 8384B-15 (1.5V FIXED) Output Voltage (Note 4) LX8384/84A-15 VOUT LX8384B-15 VIN = 5V, IOUT = 0mA, TA = 25°C 4.75V < VIN < 10V, 0mA < IOUT < 5A, P < PMAX VIN = 5V, IOUT = 0mA, TA = 25°C 4.75V < VIN < 10V, 0A < IOUT < 5A, P < PMAX Line Regulation (note 2) Load Regulation (note 2) Thermal Regulation Ripple Rejection (note 3) Quiescent Current Dropout Voltage LX8384-15 LX8384A/84B-15 IQ 1.485 1.470 1.488 1.485
OUT(t)
OUT(T) 1.50 1.50 1.50 1.50 1 1 2.5 0.01 1.515 1.530 1.512 1.515 3 5 7 0.02 V V V V mV mV mV %/W dB ELECTRICALS ELECTRICALS
OUT (VIN) 4.75V < VIN < 7V 4.75V < VIN < 10V VIN = 5V, 0mA < IOUT < IOUT(MAX) TA = 25°C, 20ms pulse COUT = 100µF (Tantalum), IOUT = 5A 0mA < IOUT < IOUT(MAX), 4.75V < V < 10V 60
OUT
OUT (Pwr) (IOUT) 83 4 1.2 1 10 1.5 1.3 mA V V

OUT = 1%, IOUT < IOUT(MAX)
OUT = 1%, IOUT < IOUT(MAX) Copyright © 2000 Rev. 2.1d, 2001-03-15 Microsemi Linfinity Microelectronics Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 3 A MICROSEMI
 COMPANY LX8384x-xx 5A Low Dropout Positive Regulators P R O D UC TI O N      
 Unless otherwise specified, the following specifications apply over the operating ambient temperature for the LX8384x-xxC with 0°C ≤ TA ≤ 125°C and the LX8384-xxI with -25°C ≤ TA ≤ 125°C except where otherwise noted. Test conditions: VIN -VOUT = 3V; IOUT = 5A. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature. Parameter Symbol Test Conditions LX8384x-xx Typ Max 6 0.25 TA=125°C, 1000 hours TA=25°C, 10Hz < f < 10kHz 0.3 0.003 1 W W W . Microsemi . COM Min 5 Units
LX8384-15 / 8384A-15 / 8384B-15 (1.5V FIXED)(CONTINUED) Maximum Output Current Temperature Stability (Note 3) Long Term Stability (Note 3) IOUT(MAX) VIN < 7V A % % %
OUT(T)
OUT (t)
RMS Output Noise (% of VOUT) VOUT (RMS) (Note 3) LX8384-33 / 8384A-33 / 8384B-33 (3.3V FIXED) Output Voltage (Note 4) LX8384/84A-33 VOUT LX8384B-33 VIN=5V, IOUT=0mA, TA=25°C 4.75V < VIN < 10V, 0mA < IOUT < 5A, P < PMAX VIN=5V, IOUT=0mA, TA=25°C 4.75V < VIN < 10V, 0mA < IOUT < 5A, P < PMAX Line Regulation (Note 2) Load Regulation (Note 2) Thermal Regulation Ripple Rejection (Note 3) Quiescent Current Dropout Voltage LX8384-33 LX8384A/84B-33 Maximum Output Current Temperature Stability (Note 3) Long Term Stability (Note 3) RMS Output Noise (% of VOUT) (Note 3) IQ 3.267 3.235 3.274 3.267 3.30 3.30 3.30 3.30 1 2 5 0.01 3.333 3.365 3.326 3.333 6 10 15 0.02 V V V V mV mV mV %/W dB
OUT(VIN)
OUT
OUT (Pwr) (IOUT) 4.75V < VIN < 7V 4.75V < VIN < 10V VIN=5V, 0mA < IOUT < IOUT(MAX) TA=25°C, 20ms pulse COUT=100µF (Tantalum), IOUT=5A 0mA < IOUT < IOUT(MAX), 4.75V < VIN < 10V 60 83 4 1.2 1 10 1.5 1.3 mA V V A %
 IOUT(MAX)
OUT=1%, IOUT < IOUT(MAX)
OUT=1%, IOUT < IOUT(MAX) VIN < 7V 5 6 0.25
OUT (T)
OUT (t) VOUT (RMS) TA=125°C, 1000 hours TA=25°C, 10Hz < f < 10kHz 0.3 0.003 1 % % ELECTRICALS ELECTRICALS Note 2 Note 3 Note 4 Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation. These parameters, although guaranteed are not tested in production. See Maximum Output Current Section Copyright © 2000 Rev. 2.1d, 2001-03-15 Microsemi Linfinity Microelectronics Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 4 A MICROSEMI
 COMPANY LX8384x-xx 5A Low Dropout Positive Regulators P R O D UC TI O N   The LX8384/84A/84B Series ICs are easy to use LowDropout (LDO) voltage regulators. They have all of the standard self-protection features expected of a voltage regulator: short circuit protection, safe operating area protection and automatic thermal shutdown if the device temperature rises above approximately 165°C. Use of an output capacitor is REQUIRED with the LX8384/84A/84B series. Please see the table below for recommended minimum capacitor values. These regulators offer a more tightly controlled reference voltage tolerance and superior reference stability when measured against the older pin-compatible regulator types that they replace. STABILITY The output capacitor is part of the regulator’s frequency compensation system. Many types of capacitors are available, with different capacitance value tolerances, capacitance temperature coefficients, and equivalent series impedances. For all operating conditions, connection of a 220µF aluminum electrolytic capacitor or a 47µF (