UNISONIC TECHNOLOGIES CO., LTD LP5951 Preliminary LINEAR INTEGRATED CIRCUIT HIGH INPUT VOLTAGE, LOW QUIESCENT CURRENT, 150mA LDO REGULATOR DESCRIPTION The UTC LP5951 is a low ground current linear regulator which operates with input voltage from 6.5V ~ 25V and delivers output current up to 150mA. Typical dropout voltage is only 450mV at 150mA loading. The UTC LP5951 has many protection functions including over temperature and current limit which prevent the device from thermal over-load and current over-load. HSOP-8 FEATURES * Wide Operating Voltage : 6.5V~25V * Ultra Low Ground Current :120μA * High Output Accuracy : ±2% over temperature * Excellent Load/Line Transient * Low Dropout Voltage : 450mv @ 150mA * Built-in Current Limit Protection * Built-in Over Temperature Protection * Zero Shutdown Current ORDERING INFORMATION Ordering Number Lead Free Halogen Free LP5951L-xx-SH2-R LP5951G-xx-SH2-R LP5951L-xx-SH2-T LP5951G-xx-SH2-T Note: xx: Output Voltage, refer to Marking Information. LP5951L-xx-SH2-R Package Packing HSOP-8 HSOP-8 Tape Reel Tube (1)Packing Type (1) R: Tape Reel, T: Tube (2)Package Type (2) SH2: HSOP-8 (3)Output Voltage Code (3) xx: Refer to Marking Information (4)Lead Free (4) G: Halogen Free, L: Lead Free www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd 1 of 5 QW-R101-047.a LP5951 Preliminary LINEAR INTEGRATED CIRCUIT MARKING INFORMATION PACKAGE VOLTAGE CODE MARKING Date Code HSOP-8 LP5951 AD :ADJ Voltage Code PIN CONFIGURATION PIN DESCRIPTION PIN NO. 1 2, 3, 6 4 5 7 8 PIN NAME VOUT NC ADJ EN GND VIN UTC XX G: Halogen Free L: Lead Free Lot Code DESCRIPTION output pin No Connection ADJ: output feedback pin ON/OFF pin, low=output ON; high=output OFF Ground Input pin UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R102-047.a LP5951 Preliminary LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 5 QW-R102-047.a LP5951 Preliminary LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -0.3~+27 V Feedback Voltage VFB -1.5~+27 V Shutdown Voltage VSHDN -0.3~+27 V Power Dissipation PD Internally Limited W Junction Temperature TJ +125 °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. THERMAL DATA PARAMETER Junction to Ambient Junction to Case SYMBOL θJA θJC RATINGS 50 20 UNIT °C/W °C/W ELECTRICAL CHARACTERISTICS (Unless otherwise specified, these specifications apply over VIN=VOUT+2.5V, CIN=1µF, COUT=2.2mF,TA=-40°C ~ 85°C. Typical values refer to TA=25°C.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input Voltage VIN 6.5 25 V Output Voltage Accuracy VOUT -2 2 % Output Voltage Range 3 20 V 75 120 140 μA IOUT=0.1mA Quiescent Current IQ IOUT=150mA 8 12 22 mA Load Current Range IOUT 0 150 mA Reference Voltage VREF -2% 1.235 +2% V Line Regulation ΔVOUT VOUT+2.5V<VIN<25V, IOUT=1mA 0.1 0.2 % Load Regulation ΔVOUT 0.1mA<IOUT<150mA 0.2 0.5 % 50 80 150 IOUT=0.1mA mV Dropout Voltage VD IOUT=150mA 380 450 600 PROTECTION Over Temperature Shutdown OTS 150 °C Circuit Current Limit ILIMIT VIN=VOUT +2.5V 250 350 500 mA Short Current ISHORT VOUT=0V 50 mA SHUTDOWN Input High Voltage 2 VEN V Input Low Voltage 0.7 EN pin Input Bias Current IEN VEN=25V 450 600 μA Shutdown Supply Current IQSHDN EN=High, VIN=19V 0.1 1 mA UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R102-047.a LP5951 Preliminary LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT 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-R102-047.a