P1596-50-TA5-T

UNISONIC TECHNOLOGIES CO., LTD P1596 150KHZ, 1.5A PWM BUCK DC/DC CONVERTER 1 1 LINEAR INTEGRATED CIRCUIT DESCRIPTION The UTC P1596 series is a step-down switching regulator able to provide 1.5A output current. The available output voltages are 2.5V, 3.3V, 5V and an adjustable output version. TO-220B-5 TO-220-5 FEATURES *Output load current: 1.5A *Adjustable version output voltage range, 1.23V ~ 18V±4% *150KHz ±15% fixed switching frequency *Voltage mode non-synchronous PWM control *Thermal-shutdown and current-limit protection *Operating voltage can be up to 22V *Low power standby mode *High efficiency *Internal current and thermal limit *Built-in switching transistor on chip 1 1 TO-263-5 TO-252-5 1 SIP-4 *Pb-free plating product number: P1596L ORDERING INFORMATION Order Number Normal Lead Free Plating P1596-xx-G04-K P1596L-xx-G04-K P1596-xx-TA5-T P1596L-xx-TA5-T P1596-xx-TB5-T P1596L-xx-TB5-T P1596-xx-TN5-R P1596L-xx-TN5-R P1596-xx-TN5-T P1596L-xx-TN5-T P1596-xx-TQ5-R P1596L-xx-TQ5-R P1596-xx-TQ5-T P1596L-xx-TQ5-T Note: xx: Output Voltage, refer to Marking Information. P1596L-xx-G04-K Package SIP-4 TO-220-5 TO-220B TO-252-5 TO-252-5 TO-263-5 TO-263-5 Packing Bulk Tube Tube Tape Reel Tube Tape Reel Tube (1)Packing Type (2)Package Type (3)Output Voltage Code (4)Lead Plating (1) K: Bulk, R: Tape Reel, T:Tube (2) G04: SIP-4, TA5: TO-220-5, TB5: TO-220B, TN 5: TO-252-5, TQ5: TO-263-5 (3) xx: refer to Marking Information (4) L: Lead Free Plating, Blank: Pb/Sn www.unisonic.com.tw Copyright © 2005 Unisonic Technologies Co., Ltd 1 of 8 QW-R103-027,B P1596 BLOCK DIAGRAM ON / OFF LINEAR INTEGRATED CIRCUIT VIN 220mV 220mV Current Source bias 1.235V Reference 2.5V Regulator Start up + Comp Comp + FB + Amp - Frequency Compensation Comp + Pre-driver 1.5A Switch OUTPUT 200kHz OSC. Thermal Shutdown GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 8 QW-R103-027,B P1596 PIN DESCRIPTIONS FOR 5-PIN 1 2 3 4 5 FOR 4-PIN 1 2 4 3 PIN NAME VIN Output GND FB (Feedback) SD (Shutdown) LINEAR INTEGRATED CIRCUIT DESCRITION Operating voltage input Switching output Circuit Ground Output voltage feedback control ON/OFF shutdown MARKING INFORMATION PACKAGE VOLTAGE CODE MARKING UTC P1596 Lead Plating Date Code 1234 SIP-4 25:2.5V 33:3.3V 50:5.0V AD:ADJ Voltage Code TO-220-5 TO-220B TO-252-5 TO-263-5 UTC P1596 Voltage Code 12345 Lead Plating Date Code THERMAL DATA PARAMETER SIP-4 TO-220B TO-220-5 TO-252-5 TO-263-5 SYMBOL RATINGS 30 3 3 8 4 UNIT Thermal Resistance Junction to Case θJC ℃/W UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 8 QW-R103-027,B P1596 ABSOLUTE MAXIMUM RATINGS LINEAR INTEGRATED CIRCUIT PARAMETER SYMBOL RATINGS UNIT Maximum Supply Voltage VCC 24 V Operating Voltage VOPR 4.5 ~ 22 V ON/OFF Pin Input Voltage VON/OFF -0.3 ~ +18 V Feedback Pin Voltage VFB -0.3 ~ +18 V Output Voltage to Ground (Steady State) VOUT -1 V Power Dissipation PD Internally limited W ℃ Temperature Range TOPR -40 ~ +125 ℃ Storage Temperature Range TSTG -65 ~ +150 Note Absolute maximum ratings are those values beyond which the device which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ELECTRICAL CHARACTERISTICS (TJ=25℃, VIN=12V for 2.5V, 3.3V, 5V, ADJ and VIN=18V for the 12V, ILOAD=0.5A, unless otherwise specified.) PARAMETER Output Voltage 2.5V 3.3V 5.0V 2.5V 3.3V 5.0V SYMBOL VOUT TEST CONDITIONS 3.8V≦VIN≦22V, 0.2A≦ILOAD≦1.5A 4.75V≦VIN≦22V, 0.2A≦ILOAD≦1.5A 7V≦VIN≦22V, 0.2A≦ILOAD≦1.5A VIN=12V, ILOAD=1.5A VIN=12V, ILOAD=1.5A VIN=12V, ILOAD=1.5A 4.75V≦VIN≦22V, 0.2A≦ILOAD≦1.5A VOUT Programmed for 3V VIN=12V, ILOAD=1.5A Adjustable Version Only, VFB=1.3V 127 IOUT=1.5A, No outside circuit VFB=0V force driver on VFB=0V force driver on VFB=12V force driver off Peak Current, No outside circuit VFB=0V force driver on Output=0V, No outside circuit VFB=12V force driver off Output=-1V, VIN=12V VFB=12V force driver off ON/OFF Pin=5V, VIN=22V 2 -200 -5 5 70 10 150 1.193 MIN 2.4 3.168 4.8 TYP 2.5 3.3 5.0 73 73 80 1.23 78 -10 150 1.25 100 0 -50 173 1.4 MAX UNIT 2.6 V 3.432 V 5.2 V % % % 1.267 V % nA KHz V % A µA mA mA µA Efficiency UTC P1596-ADJ Output Feedback Efficiency η VFB η IBIAS fOSC VSAT Max Min DC ILIMIT ILEAK IQ ISTBY ALL OUTPUT VOLTAGE Feedback Bias Current Oscillator Frequency Saturation Voltage Duty Cycle Current Limit Output Leakage Current Quiescent Current Standby Quiescent Current UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 8 QW-R103-027,B P1596 TYPICAL APPLICATION FOR ADJUSTABLE OUTPUT VOLTAGE VERSION For 5 PIN: CFF R1 R2 LINEAR INTEGRATED CIRCUIT Locate The Programming Resistors Near The Feedback Pin Using Short Leads Keep Feedback Wiring Away From Inductor Flux OUTPUT 1k + Unregulated DC Input +V IN 4 Feedback U TC P1596 -ADJ Regulated Output L1 D1 1 + C IN 2 3 GND 5 ON/OFF + C OUT L O A D Heavy Lines Must be Kept Short and Use Ground Plane Construction for Best Results VOUT×(R1/(R1+ R2))=VREF VOUT = VREF(1+ R2/R1) Where VREF=1.23V R2=R1((VOUT / VREF)-1) For 4 PIN: R1 R2 FB 12V DC Input VIN + CIN Capacitor 1 3 UTC P1596 -XX 4 GND 2 OUTPUT L1 3.3V/1.5A Output Load Inductor + D1 Schottky Diode Co Capacitor VOUT=VFB×(1+R1/R2) VFB=1.23V R2=1K~3K UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 8 QW-R103-027,B P1596 TYPICAL APPLICATION FOR FIXED OUTPUT VOLTAGE VERSIONS For 5 PIN: LINEAR INTEGRATED CIRCUIT FB 12V DC Input VIN + C IN Capacitor 1 4 UTC P1596 -XX 3 GND 2 OUTPUT L1 3.3V/1.5A Output Load Inductor + D1 Schottky Diode Co Capacitor 5 SD For 4 PIN: FB 12V DC Input VIN + C IN Capacitor 1 3 UTC P1596 -XX 4 GND 2 OUTPUT L1 3.3V/1.5A Output Load Inductor + D1 Schottky Diode Co Capacitor UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 8 QW-R103-027,B P1596 TYPICAL CHARACTERISTICS Output Voltage v.s. Temperature (VIN=12V, I OUT=1.5A) 3.4 3.35 3.3 LINEAR INTEGRATED CIRCUIT Efficiency v.s. Temperature (VIN=12V, VOUT=3.3V, I OUT=1.5A) 82 81 80 VOUT (V) 3.25 3.2 3.15 3.1 3.05 3 -40 -20 0 20 40 60 80 100 120 140 Efficiency (%) 79 78 77 76 75 74 -50 -30 -10 10 30 50 70 90 110 130 Temperature, Ta ( ℃) Temperature, Ta ( ℃) Saturation Voltage v.s. Temperature (VCC=12V, VFB=0V, VSD=0) 1.5 1.4 1.3 1.2 1.1 1 0.9 0.8 0.7 -50 -25 0 25 50 75 100 125 2 0.5A 1A 1.5A 3.5 Switch Current Limit v.s. Temperature (VCC=12V, VFB=0V) Switch Current Limit (A) Saturation Voltage (V) 3 2.5 -50 -30 -10 10 30 50 70 90 Temperature, Ta (℃) Temperature, Ta ( ℃) 13 12 Supply Current v.s. Temperature (VCC=12V, No Load, VON/OFF=0V,(Switch ON)) 60 55 Supply Current v.s. Temperature (VCC=12V, No Load, VON/OFF=5V,(Switch OFF)) Supply Current (mA) 11 10 9 8 7 6 5 -50 -30 -10 10 30 50 70 90 110 130 Switch ON Supply Current (uA) 50 45 40 35 30 Switch OFF -50 -30 -10 10 30 50 70 90 110 130 150 Temperature, Ta ( ℃) Temperature, Ta (℃) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 8 QW-R103-027,B P1596 TYPICAL CHARACTERISTICS (Cont.) Frequency v.s. Temperature (VCC=12V, IOUT=500mA, VOUT=5V) 170 165 LINEAR INTEGRATED CIRCUIT Feedback Current v.s. Temperature (VCC=12V, VOUT=5V, VFB =1.3V) 10 0 -10 -20 -30 -40 -50 160 155 150 145 140 -50 -30 -10 10 30 50 70 90 110 130 150 Temperature, Ta (℃) Feedback Current (nA) Frequency (KHz) -50 -30 -10 10 30 50 70 90 110 130 150 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 www.unisonic.com.tw 8 of 8 QW-R103-027,B