UNISONIC TECHNOLOGIES CO., LTD

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1 UNISONIC TECHNOLOGIES CO., LTD 3-TERMINAL A POSITIVE ADJUSTABLE REGULATOR DESCRIPTION The UTC is a 3-terminal adjustable positive voltage regulator capable of supplying in excess of 500mA over an output voltage range of 1.2V ~ 37V. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. FEATURES 1 SOT TO TO-252 *Output Current in Excess of A *Output Adjustable Between 1.2V and 37V *Internal Thermal Overload Protection *Internal Short Circuit Current Limiting *Output Transistor Safe Area Compensation *Floating Operation for High Voltage Applications ORDERING INFORMATION *Pb-free plating product number: L Order Number Pin Assignment Package Normal Lead Free Plating Packing -AA3-0-R L-AA3-0-R SOT-223 A O I Tape Reel -TA3-0-T L-TA3-0-T TO-2 A O I Tube -TN3-0-R L-TN3-0-R TO-252 A O I Tape Reel -TN3-0-T L-TN3-0-T TO-252 A O I Tube Note: Pin assignment: I:V IN O:V OUT A:ADJ L-AA3-0-R (1)Packing Type (2)Pin Assignment (3)Package Type (4)Lead Plating (1) R: Tape Reel, T: Tube (2) refer to Pin Assignment (3) AA3: SOT-223, TA3: TO-2, TN3: TO-252 (4) L: Lead Free Plating, Blank: Pb/Sn 1 of 6 Copyright 05 Unisonic Technologies Co., Ltd

2 BLOCK DIAGRAM 3 + Voltage Reference - Protection Circuitry Rlimit 2 Output 1 Vadj UNISONIC TECHNOLOGIES CO., LTD 2 of 6

3 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT -Output Voltage Differential V IN -V OUT 40 V Power Dissipation P D Internally Limited W Junction Temperature T J +125 Operating Temperature T OPR - ~ +85 Storage Temperature T STG -40 ~ +150 Note 1. 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. 2. The device is guaranteed to meet performance specification within 0 ~+70 operating temperature range and assured by design from - ~+85. ELECTRICAL CHARACTERISTICS (V IN -V OUT =5V, I OUT =0.1A, 0 T J +125, P D(MAX) =7.5W, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Ta=+25, 3V V IN -V OUT 40V %/V Line Regulation V OUT 3V V IN -V OUT 40V Load Regulation V OUT Ta=+25 C, 10mA V IN -V OUT A V OUT 5V V OUT 5V 10mA I OUT A V OUT 5V V OUT 5V mv %/Vo mv %/Vo Adjustment Pin Current I ADJ µa Adjustment Pin Current 3V V IN -V OUT 40V I ADJ Change 10mA I OUT A, P D <P D(MAX) µa Reference Voltage V REF 3V V IN -V OUT 40V 10mA I OUT A, P D <P D(MAX) V Temperature Stability ST T 0.7 %/Vo Minimum Load Current to V IN -V OUT =40V I L(MIN) Maintain Regulation ma V IN -V OUT 15V, P D <P D(MAX) 0.9 Maximum Output Current I O(MAX) V IN -V OUT =40V P D <P D(MAX), Ta= A RMS Noise, % of V OUT en Ta=+25, 10Hz<f<10KHz %/Vo Ripple Rejection RR V OUT =10V, f=1hz Without C ADJ C ADJ =10µF Long-Term Stability ST T J =+125, 1000Hours %/1000Hrs V/µs UNISONIC TECHNOLOGIES CO., LTD 3 of 6

4 TYPICAL APPLICATION D1 1N4002 UTC VoUT Output μF VADJ 7 PN2222A 1k TTL CONTROL MIN. VoUT=1.25V Figure V Electronic Shutdown Regulator D1 protects the device during an input short circuit UTC VoUT Output K 1N4001 VADJ R2 PN2907A + 1.0μF Figure 2. Slow Turn-On Regulator UTC VoUT R1 R2 IoUT Output VADJ IADJ VREF IO(MAX)=( )+IADJ= R1 VREF IO(MIN)=( )+IADJ= R1+R2 5mA<IoUT<500mA 1.25V R1 1.25V R1+R2 Figure 3. Current Regulator UNISONIC TECHNOLOGIES CO., LTD 4 of 6

5 TYPICAL CHARACTERISTICS Minimum Load Current (ma) Minimum Load Current Peak Output Current vs. -Output Differential Voltage 30 TJ=25 TJ= Peak Output Current Io(peak) (A) output Differential Voltage, VIN-VOUT (V) output Differential Voltage, VIN-VOUT (V) Adjustment Pin Current vs.temperature Ripple Rejection vs. Frequency Adjustment Pin Current (μa) VIN-VOUT=5V, IoUT=5mA VoUT=1.25V VoUT=36V Ripple 'Rejection (db) VIN=19V, VOUT=10V IOUT=5mA, TJ=25 C Cadj=0μF Cadj=10μF k 10k 100k 1M Ambient Temperature, Ta ( ) Frequency, f (Hz) Load Regulation vs. Temperature Line Regulation vs. Temperature VIN-VOUT=5V, Vo=1.25V 10mA IOUT 500mA, Pulse test V VIN-VOUT 40, VOUT=1.25V IOUT=100mA, Pulse test Load Regulation (%) Line Regulation (%/V) Ambient Temperature, Ta ( ) Ambient Temperature, Ta ( ) UNISONIC TECHNOLOGIES CO., LTD 5 of 6

6 TYPICAL CHARACTERISTICS(Cont.) Outputvoltage vs.temperature Thermal Shutdown VOUT=5V, IOUT=5mA 1.50 VIN=5V,VOUT=1.25V,IOUT=0mA Output Voltage, VOUT (V) VIN-VOUT=40V VIN-VOUT=3V Output Voltage, VOUT (V) Ambient Temperature, Ta ( ) Ambient Temperature, Ta ( ) 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 6 of 6