UNISONIC TECHNOLOGIES CO., LTD LR2965 Preliminary CMOS IC 1.5A, LOW DROPOUT REGULATOR WITH POWER GOOD DESCRIPTION The UTC LR2965 is CMOS-based positive voltage and a very low dropout regulator IC that minimum input voltage is 2.5V and is capable of delivering the continuous output load current up to 1.5A. It has features of low dropout (maximum 300mV at 1A), a very low quiescent current (typically 300uA at 0.1A) and very high PSRR up to 86dB at 1A load current. The output voltage can be set from 0.5V to (VIN - VD) with an external resistor divider and it has ±2% accuracy through all temperature ranges include the line as well as load variations. It is allowed to use a small 4.7μF MLCC input and output capacitor to deliver the current with the stable operation. Built-in Soft-Start function reduces the inrush current and the other features are include over current protection (OCP), short-circuit protection (SCP), and thermal shut down protection (TSD). FEATURES * Input Voltage Range: 2.5V~6.0V * Supply Current : (Typ.) 300uA * Current limit : (Min.) 1.8A * Adjustable Output from 0.5V * LR2965: Typ 0.4V Dropout @ IOUT=1.5A * Compatible with MLCC Capacitors * Built-in Soft-Start Limits Inrush Current * Built-in Thermal Shutdown Protection * Built-in Over Current & Short Circuit Protection ORDERING INFORMATION Ordering Number Note: LR2965G-xx-SH2-R xx: Output Voltage, refer to Marking Information. www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd Package Packing HSOP-8 Tape Reel 1 of 5 QW-R102-061.a LR2965 Preliminary CMOS IC MARKING INFORMATION PACKAGE VOLTAGE CODE HSOP-8 25: 2.5V AD: ADJ MARKING PIN CONFIGURATION OUT 1 1 OUT 2 2 8 VIN 7 VIN GND FB 3 6 EN GND 4 5 PG PIN DESCRIPTION PIN NO. 1, 2 PIN NAME OUT 3 FB 4 5 6 7,8 GND PG EN VIN DESCRIPTION Voltage Regulator Output Pin Feedback Pin. Connect to output through a voltage-divider to set the output. Recommended that the tolerance of feedback resistors is below 1%. Ground Pin Open Drain Power-Good (PG) Output. Chip Enable Pin Input Supply Voltage Pin. BLOCK DIAGRAM VIN EN Reference (0.5V) Error AMP OUT OCP/TSD GND FB PG Power Good Control UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R102-061.a LR2965 Preliminary CMOS IC ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN -0.3~7 V Output Voltage OUT -0.3~VIN+0.3 V Junction Temperature TJ 150 °C Storage Temperature TSTG -65~150 °C 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. RECOMMENDED OPERATING CONDITIONS PARAMETER Input Voltage Range Ambient Temperature Range SYMBOL VIN TA RATINGS 2.5~6.0 -40~85 UNIT V °C THERMAL DATA PARAMETER Junction to Ambient Junction to Case SYMBOL θJA θJC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw RATINGS 50 10 UNIT °C/W °C/W 3 of 5 QW-R102-061.a LR2965 Preliminary CMOS IC ELECTRICAL CHARACTERISTICS All parameters are guaranteed over the operational supply voltage and temperature range. Operating conditions unless otherwise noted are: VIN=5V, OUT=2.5V and TA=25°C. Typical values are for information only. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Supply Voltage Quiescent Current IQ IOUT=100mA 300 uA Shutdown Current ISTD VIN=6V, VEN=GND 0.2 2 uA Feedback (FB) Feedback Voltage Accuracy VF IOUT=10mA, TA =25°C 490 500 510 mV Input Bias Current IF VFB=0.5V, VIN =6V 0.001 0.1 uA Output (OUT) Output Accuracy VOUT -2 2 % Load Regulation RLO IOUT=1mA to 1.5A 0.1 2 %/A Line Regulation RLN VIN=2.2~6V, VOUT=1.225V, IOUT=1mA -0.2 0.2 %/V IOUT=1.5A,VFB=480mV 400 Dropout Voltage VD IOUT=1A,VFB=480mV 140 280 mV IOUT=0.5A,VFB=480mV 200 Current Limit IC 1.8 A Load transient (Note 1) LOT IOUT=20mA to 1.5A, 3 % Line Transient (Note 1) RNT ∆VIN=0.5V 3 % Enable (EN)) VENH EN rising, VIN=OUT+1V~6V 1.2 6 V Input Threshold VENL EN falling, VIN=OUT+1V~6V 0.4 Input Bias Current IEN EN=0 or 6V -1 0 1 uA Power Good (PG) PV1 FB high, VHYS=10mV, VIN=OUT+1V~6V 550 mV Threshold Voltage PV2 FB low, VHYS=10mV, VIN=OUT+1V~6V 400 mV Output Voltage Low PCL FB=0.4V or 0.6V, IPG=1mA 25 200 mV Output Current High PCH PWRGD=6V 0.001 0.1 uA Rising Delay Time PRDT From FB*90% to PG 10 us Falling Delay Time 1 PFDT1 VIN=2.5V, From FB to PG 20 70 120 us Falling Delay Time 2 PFDT2 VIN=6V, From FB to PG 60 180 300 us Thermal Shutdown (TSD) (Note 1) TSDON TSD On 165 TSD Threshold TSDOFF TSD Off 145 Note: Guaranteed by design but not production tested. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R102-061.a LR2965 Preliminary CMOS IC TYPICAL APPLICATION CIRCUIT EN 5V 2.5V OUT 4.7µF VIN 100kΩ 40kΩ FB 4.7µF 10kΩ PG GND UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 5 QW-R102-061.a