UNISONIC TECHNOLOGIES CO., LTD LR3965 CMOS IC 1.5A LOW DROPOUT LINEAR REGULATOR DESCRIPTION The UTC LR3965 belonged to low-noise, low-dropout, linear regulators operate from 2.25V to 6V input and are guaranteed to deliver 1.5A. Wide range of preset output voltage options are available. Built-in low on-resistance transistor provides low dropout voltage and large output current. The UTC LR3965 is designed and optimized for battery-powered systems to work with low noise. The UTC LR3965 consumes less than 0.01A in shutdown mode. Other features include ultra low dropout voltage, current limiting protection, thermal shutdown protection and high ripple rejection ratio. FEATURES * 1.5A Guaranteed Output Current * 0.01A Shutdown Current * 40mV Dropout at 150mA Load * Low Temperature Coefficient * Current Limiting Protection * Thermal Shutdown Protection * Excellent Line/Load Transient * Sense Option Improves Load Regulation ORDERING INFORMATION Ordering Number Lead Free Halogen Free LR3965L-xx-AB3-C-R LR3965G-xx-AB3-C-R LR3965L-xx-AA3-A-R LR3965G-xx-AA3-A-R LR3965L-xx-AA3-D-R LR3965G-xx-AA3-D-R LR3965L-xx-TN3-A-R LR3965G-xx-TN3-A-R LR3965L-xx-TN3-A-T LR3965G-xx-TN3-A-T LR3965L-xx-TN3-D-R LR3965G-xx-TN3-D-R LR3965L-xx-TN3-D-T LR3965G-xx-TN3-D-T LR3965L-xx-TQ2-A-R LR3965G-xx-TQ2-A-R LR3965L-xx-TQ2-A-T LR3965G-xx-TQ2-A-T LR3965L-xx-TQ2-D-R LR3965G-xx-TQ2-D-R LR3965L-xx-TQ2-D-T LR3965G-xx-TQ2-D-T LR3965L-xx-TN4-R LR3965G-xx-TN4-R LR3965L-xx-TN4-T LR3965G-xx-TN4-T LR3965L-xx-TN5-R LR3965G-xx-TN5-R LR3965L-xx-TN5-T LR3965G-xx-TN5-T LR3965L-xx-TQ5-R LR3965G-xx-TQ5-R LR3965L-xx-TQ5-T LR3965G-xx-TQ5-T LR3965L-xx-S08-R LR3965G-xx-S08-R LR3965L-xx-S08-T LR3965G-xx-S08-T Note: Pin Assignment: I:VIN O:VOUT G:GND Package SOT-89 SOT-223 SOT-223 TO-252 TO-252 TO-252 TO-252 TO-263 TO-263 TO-263 TO-263 TO-252-4 TO-252-4 TO-252-5 TO-252-5 TO-263-5 TO-263-5 SOP-8 SOP-8 S: SHDN www.unisonic.com.tw Copyright (c) 2012 Unisonic Technologies Co., Ltd 1 G G I G G I I G G I I S S S S S S S S 2 I O G O O G G O O G G I I I I I I I I Pin Assignment 3 4 5 6 7 8 O - - - - I - - - - O - - - - I - - - - I - - - - O - - - - O - - - - I - - - - I - - - - O - - - - O - - - - G O A - - G O A - - G O A - - G O A - - G O A - - G O A - - O A G G G G O A G G G G Packing Tape Reel Tape Reel Tape Reel Tape Reel Tube Tape Reel Tube Tape Reel Tube Tape Reel Tube Tape Reel Tube Tape Reel Tube Tape Reel Tube Tape Reel Tube A: ADJ/SENSE/SS/POK 1 of 10 QW-R102-037.P LR3965 CMOS IC ORDERING INFORMATION(Cont.) MARKING INFORMATION PACKAGE VOLTAGE CODE MARKING SOT-223 SOT-89 :1.2V :1.5V :1.8V :2.5V :3.3V :5.0V Voltage Code Pin Code L: Lead Free G: Halogen Free XX 12 15 18 25 33 50 XX LR3965X Date Code 1 2 3 TO-252 TO-263 TO-252-4 TO-252-5 TO-263-5 12 :1.2V 15 :1.5V 18 :1.8V 25 :2.5V 33 :3.3V 50 :5.0V AD :ADJ SOP-8 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 10 QW-R102-037.P LR3965 CMOS IC PIN CONFIGURATION 1 GND 3 2 VIN 1 VIN VOUT SOT-89 5 4 3 2 1 2 GND VOUT GND 3 VOUT SHDN 1 8 GND VIN 2 7 GND VOUT 3 6 GND SENSE/ADJ/SS/POK 4 5 GND SENSE/ADJ/SS/POK VOUT GND VIN SHDN 2 TO-252/TO-263 SOT-223 TO-252-4/TO-252-5/TO-263-5 1 VIN 3 SOP-8 PIN DESCRIPTION PIN NAME VIN GND SHDN VOUT ADJ SENSE SS POK DESCRIPTION Power Input Voltage. Supply voltage can range from 2.25V to 6V. Bypass with a 68F capacitor to GND. Ground Active-Low Shutdown Input. A logic low at SHDN reduces supply current to 0.01A. In shutdown, the POK output is low. Connect SHDN to VIN for normal operation. Output Voltage Voltage-adjust Input. Connect ADJ to GND for preset output. Connect an external resistive voltage-divider from VOUT to ADJ to set the output voltage between 0.8V and 6V. The ADJ regulation voltage is 800mV Remote sense pin. Soft start time setting. For adjustable soft start time version, connect a capacitor from SS to gnd to set the soft start time. Open-Drain, Active-Low Power-OK Output. POK remains low while the output voltage (VOUT) is below the POK threshold. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 10 QW-R102-037.P LR3965 CMOS IC BLOCK DIAGRAM VIN ON OFF SHDN SHDN Thermal Sensor Current Limit UVLO VOUT SENSE + VREF ERR AMP SS - POK + - 93% VREF + ADJ - 80mV GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 10 QW-R102-037.P LR3965 CMOS IC ABSOLUTE MAXIMUM RATING (TA=25, unless otherwise specified) PARAMETER RATINGS UNIT 6.5 V SOP-8 606 SOT-223 714 Power Dissipation SOT-89 PD 500 mW TO-252/TO-252-5/TO-252-4 952 TO-263/TO-263-5 1250 Junction Temperature TJ +125 Operating Temperature TOPR -40 ~ +85 Storage Temperature TSTG -65 ~ +150 Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. Supply Voltage SYMBOL VIN THERMAL DATA PARAMETER SOP-8 SOT-223 Junction to Ambient SOT-89 TO-252/TO-252-5/TO-252-4 TO-263/TO-263-5 SOP-8 SOT-223 Junction to Case SOT-89 TO-252/TO-252-5/TO-252-4 TO-263/TO-263-5 SYMBOL UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw JA JC RATINGS 165 150 180 112 64 20 15 50 12 4 UNIT C/W C/W 5 of 10 QW-R102-037.P LR3965 CMOS IC ELECTRICAL CHARACTERISTICS (TA= 25C, VIN = VOUT + 1V or VIN =2.25V whichever is greater, CIN = 68F, COUT =33F, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input Voltage VIN Note1 6 V TA25 , IOUT= 1mA ~1.5A -2 2 % Output Voltage Accuracy VOUT TA0~85, IOUT= 1mA~1.5A (Preset Mode) -3 3 % Maximum Output Current IOUT 1.5 A Short-Circuit Current Limit ILIMIT VOUT=0V 2.5 A 200 A IOUT = 0mA Ground Pin Current IGND IOUT= 1mA to 1.5A 250 A VOUT(NOM)<=1.8V 1000 1050 Dropout Voltage (Note 2) VD IOUT=1.5A mV 1.8V