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 0.01μA 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 * 0.01μA 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 LR3965G-xx-AB3-C-R LR3965G-xx-AA3-A-R LR3965G-xx-AA3-D-R LR3965L-xx-TN3-A-R LR3965G-xx-TN3-A-R LR3965L-xx-TN3-D-R LR3965G-xx-TN3-D-R 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 LR3965G-xx-S08-R Note: Pin Assignment: I: VIN O: VOUT G: GND Package SOT-89 SOT-223 SOT-223 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 S: SHDN www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 G G I G I G G I I S S S S S S S 2 I O G O G O O G G I I I I I I I Pin Assignment 3 4 5 6 7 8 O - - - - I - - - - O - - - - I - - - - 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 Packing Tape Reel Tape Reel Tape Reel Tape Reel Tape Reel Tape Reel Tube Tape Reel Tube Tape Reel Tube Tape Reel Tube Tape Reel Tube Tape Reel A: ADJ/SENSE/SS/POK 1 of 10 QW-R102-037.R 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 XX LR3965G XX 12 15 18 25 33 50 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.R 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 68µF capacitor to GND. Ground Active-Low Shutdown Input. A logic low at SHDN reduces supply current to 0.01µA. 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.R 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.R LR3965 CMOS IC ABSOLUTE MAXIMUM RATING (TA=25°С, unless otherwise specified) PARAMETER RATINGS UNIT 6.5 V SOP-8 606 mW SOT-223 714 mW Power Dissipation SOT-89 PD 500 mW TO-252/TO-252-5/TO-252-4 952 mW TO-263/TO-263-5 1250 mW Junction Temperature TJ +125 °С Operating Temperature TOPR -40 ~ +85 °С Storage Temperature TSTG -65 ~ +150 °С 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 RESISTANCES CHARACTERISTICS 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 θJA θJC RATINGS 165 150 180 112 64 20 15 50 12 4 UNIT C/W C/W 5 of 10 QW-R102-037.R LR3965 CMOS IC ELECTRICAL CHARACTERISTICS (TA= 25°C, VIN = VOUT + 1V or VIN =2.25V whichever is greater, CIN = 68µF, COUT =33µF, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input Voltage VIN Note1 6 V T ＝25°С , I = 1mA ~1.5A -2 2 % Output Voltage Accuracy A OUT VOUT (Preset Mode) TA＝0~85°С, IOUT= 1mA~1.5A -3 3 % Maximum Output Current IOUT 1.5 A Short-Circuit Current Limit ILIMIT VOUT=0V 2.5 A IOUT = 0mA 200 µA Ground Pin Current IGND IOUT= 1mA to 1.5A 250 µA VOUT(NOM)<=1.8V 1000 1050 Dropout Voltage (Note 2) VD IOUT=1.5A mV 1.8V<VOUT(NOM) 550 Line Regulation (Note 3) Load Regulation (Note 3, 4) Output Voltage Noise Shutdown Supply Current Shutdown Threshold ∆VOUT ∆VIN × VOUT ∆VOUT eN IOFF VIN=VOUT+VD~6V 0.08 0.55 %/V VIN=VOUT+VD, IOUT=10mA~1.5A f=10Hz to1MHz, COUT=33μF 0.25 300 0.5 % µVRMS SHDN = GND 0.01 5 µA VIH VIL TSHDN DTSHDN VREF 1.6 0.6 V V °С °С V mV V mV Thermal Shutdown Temperature 170 Thermal Shutdown Hysteresis 20 ADJ Voltage Measured on ADJ, IOUT =10mA 0.774 0.8 0.826 ADJ Mode Threshold 80 Adjustable Output Voltage 0.8 5 POK Output Low Voltage VOL Sinking 2mA 5 50 Operating Voltage Range for Sinking 100µA 1.0 5.5 V Valid POK Output POK Output High Leakage VPOK=5.5V 100 nA Current POK Threshold Rising edge, referred to VOUT(NOM) 90 93 96 % Notes: 1. The minimum operating value for VIN is equal to either [VOUT(NOM)+VD] or 2.25V, whichever is greater. 2. Dropout voltage is defined as the voltage from the input to output when output is 2% below the nominal value. 3. Output voltage line regulation is defined as the change in output voltage from the nominal value resulting from a change in the input line voltage. Output voltage load regulation is defined as the change in output voltage from the nominal value as the load current increases from no load to full load. 4. Regulation is measured at constant junction temperature by using a 20ms current pulse. Devices are tested for load regulation in the load range from 10mA to 1.5A. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 10 QW-R102-037.R LR3965 CMOS IC TYPICAL APPLICATION CIRCUIT VIN VOUT VIN CIN 68µF COUT 33µF LR3965 VOUT GND VOUT VIN CIN + 68μF ON OFF VOUT VIN LR3965 SENSE SHDN GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw + COUT 33µF L O A D 7 of 10 QW-R102-037.R LR3965 CMOS IC TYPICAL APPLICATION CIRCUIT (Cont.) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 of 10 QW-R102-037.R LR3965 TYPICAL CHARACTERISTICS Ambient Temperature vs. Output Voltage Change Output Voltage vs Input Voltage 3.0 0.25 2.0 Vout Votalge Change (%) Output Voltage, VOUT (V) 0.00 IOUT=0mA 2.5 IOUT=1.5A 1.5 1.0 -0.25 -0.50 -0.75 -1.00 -1.25 -1.50 0.5 0.0 -1.75 LR3965-2.5V 0 1 2 3 4 5 -2.00 20 30 40 50 60 70 80 90 100 110120 130 140 6 Input Voltage, VIN (V) Air Ambient Temperature(°С) Drop-Out Voltage vs. Load Current Ground Pin Current vs. Input Voltage 400 300 Ground Pin Current, IGND (µA) 350 Drop-Out (mV) 300 250 200 150 100 250 200 150 100 50 0 0 50 200 400 600 800 1000 1200 1400 1600 2 3 Line Transient IOUT=100mA IOUT=100mA VOUT VIN(V) CIN=COUT=10μF(Ceramic,Y5V) LR3965-2.5V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4.0 VIN 3.0 2.0 VOUT(V) VIN(V) VIN 2.5 2.3 6 5.0 3.0 2.7 5 Line Transient 5.0 4.0 4 Input Voltage, VIN (V) Output Current, IOUT (mA) VOUT(V) CMOS IC VOUT CIN=COUT=10μF(Ceramic,Y5V) 1.8 1.6 LR3965-1.8V 9 of 10 QW-R102-037.R LR3965 CMOS IC TYPICAL CHARACTERISTICS (Cont.) Shutdown Load Transient 2.55 CIN=COUT=10μF(Ceramic,Y5V) VOUT 2.5 2.45 LR3965-2.5V 5 VSHDN 0 2 1 1000 IOUT 500 100 0 0 LR3965-2.5V ILOAD =1mA to 700mA UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw VOUT 0 IOUT CIN=COUT=10μF(Ceramic,Y5V) VIN=5V,T=25°C 10 of 10 QW-R102-037.R