UNISONIC TECHNOLOGIES CO., LTD P1696 LINEAR INTEGRATED CIRCUIT 200KHZ, 2A PWM STEP-DOWN DC/DC CONVERTER DESCRIPTION The UTC P1696 series is a step-down switching regulator able to provide 2A output current. The available output voltages are 2.5V 3.3V, 5V, 12V, and an adjustable output version. FEATURES *Output load current: 2A *Adjustable version output voltage range, 1.23V ~ 17.5V±4% *Operating voltage can be up to 24V *Low power standby mode *High efficiency *Internal OCP and OTP ORDERING INFORMATION Ordering Number Lead Free P1696L-xx-S08-T P1696L-xx-S08-R P1696L-xx-SH2-R Halogen Free P1696G-xx-S08-T P1696G-xx-S08-R P1696G-xx-SH2-R www.unisonic.com.tw Copyright © 2013 Unisonic Technologies Co., Ltd Package Packing SOP-8 SOP-8 HSOP-8 Tube Tape Reel Tape Reel 1 of 7 QW-R103-035.H P1696 LINEAR INTEGRATED CIRCUIT MARKING INFORMATION PACKAGE VOLTAGE CODE SOP-8 HSOP-8 25: 2.5V 33: 3.3V 50: 5.0V 12: 12V AD: ADJ PIN CONFIGURATION PIN DESCRIPTION PIN NO. 1 2 3 4 5,6,7,8 PIN NAME VIN Output FB SD GND MARKING DESCRIPTION Power input Switching Feedback Voltage Enable input ground UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 7 QW-R103-035.H P1696 LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM VIN SD Start up OCP Reference EA FB COMP Driver 2A Switch Output OSC OTP Vref GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 7 QW-R103-035.H P1696 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Maximum Supply Voltage VCC 28 V Operating Voltage VOPR 4.5 ~ 24 V ON/OFF Pin Input Voltage VON/OFF -0.3 ~ +12 V Feedback Pin Voltage VFB -0.3 ~ +12 V Output Voltage to Ground (Steady State) VOUT -1 V Power Dissipation PD Internally limited mW Junction Temperature TJ +150 °С Operating Temperature TOPR -40 ~ +125 °С Storage Temperature TSTG -40 ~ +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. ELECTRICAL CHARACTERISTICS (TJ=25°С, VIN=12V for the 2.5V 3.3V, 5V, and Adjustable version and VIN=24V for the 12V version, ILOAD=500mA.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT 5.0V≦VIN≦24V, 0.2A≦ILOAD≦2A 2.4 2.5 2.6 V 2.5V 6.0V≦VIN≦24V, 0.2A≦ILOAD≦2A 3.168 3.3 3.432 V 3.3V Output Voltage VOUT 7.5V≦VIN≦24V, 0.2A≦ILOAD≦2A 4.8 5.0 5.2 V 5.0V 15V≦VIN≦24V, 0.2A≦ILOAD≦2A 11.52 12.0 12.48 V 12V 73 % 2.5V VIN=12V, ILOAD=2A 3.3V VIN=12V, ILOAD=2A 75 % Efficiency η 5.0V VIN=12V, ILOAD=2A 80 % 12V VIN=24V, ILOAD=2A 80 % UTC P1696-ADJ 4.5V≦VIN≦24V, 0.2A≦ILOAD≦2A 1.19 1.230 1.267 V Feedback Voltage VFB VOUT programmed for 3V Efficiency η VIN=12V, VOUT=3V, ILOAD=2A 75 % ALL OUTPUT VOLTAGE Feedback Bias Current IBIAS Adjustable Version Only, VFB=1.3V 10 50 nA Oscillator Frequency fOSC (Note 1) 170 200 230 kHz Saturation Voltage VSAT IOUT=2A (Note 2, 3) 1.16 1.4 V 100 (Note 3) Max Duty Cycle (ON) % DC 0 (Note 4) Min Duty Cycle (OFF) Current Limit ICL Peak Current (Notes 2, 3) 2.5 A Output=0V (Notes 2, 4) 50 μA Output Leakage Current IL Output=-1V (Note 5) 2 30 mA Quiescent Current IQ (Note 4) 5 10 mA Standby Quiescent Current ISTBY ON/OFF Pin=5V (OFF) (Note 5) 80 200 μA ON/OFF CONTROL VIH Low (Regulator ON) 1.3 V ON /OFF Pin Logic Input Threshold Voltag VIL High (Regulator OFF) 1.3 V IH VLOGIC=2.5V (Regulator OFF) 5 15 μA ON /OFF Pin Input Current IL VLOGIC=0.5V (Regulator ON) 0.02 5 μA Note 1: The switching frequency is reduced when the second stage current limit is activated. 2: No diode, inductor or capacitor connected to output pin. 3: Feedback pin removed from output and connected to 0V to force the output transistor switch ON. 4: Feedback pin removed from output and connected to 12V for the 2.5V 3.3V, 5V, and the ADJ. version, and 15V for the 12V version, to force the output transistor switch OFF. 5: VIN = 24V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 7 QW-R103-035.H P1696 LINEAR INTEGRATED CIRCUIT FIXED OUTPUT VOLTAGE VERSIONS FB 3 VIN VIN CIN UTC P1696G -5.0V 1 L Output SD 5.0V/2A 33μH 5,6,7,8 GND 4 + 330μF 2 COUT + 470μF ADJUSTABLE OUTPUT VOLTAGE VERSIONS Note:1. VOUT (1 R1 )VFB R2 2. Tested under typical application condition: CIN 330μF L 33μH COUT 470μF 330μF 33μH 220μF UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw CF VIN<17V VIN≥17V 220pF(option) 5 of 7 QW-R103-035.H P1696 TYPICAL CHARACTERISTICS Line Regulation Normalized Output Voltage 5.15 5.15 VIN=24V,LLOAD=2A Normalized at TJ=25 5.05 Output Voltage (V) Output Voltage (V) VOUT=5V, ILOAD=100mA Normalized at TJ=25 5.10 5.10 5.00 4.95 5.05 5.00 4.95 4.90 4.90 4.85 4.85 -50 -25 25 0 50 75 Junction Temperature ( 100 125 0 10 5 ) 15 20 25 30 Input Voltage (V) Switch Saturation Voltage Efficiency 90 1.60 2A Load 85 1.40 1 : -40 2 : 25 3 : 125 5.0V Saturation Voltage (V) 80 Efficiency (%) LINEAR INTEGRATED CIRCUIT 75 3.3V 70 1.20 1.00 1 2 0.80 65 3 0.60 60 0 5 10 15 20 25 30 Input Voltage (V) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 0 0.5 1 2 3 Switch Current(A) 6 of 7 QW-R103-035.H P1696 ■ LINEAR INTEGRATED CIRCUIT FUNCTION DESCRIPTION The changes of output load can cause the output voltage changes. The changes can be sensed by FB pin. The output of error amplifier controlling output duty circle makes the output stable. The P1696 incorporates an over current protection internally. Once the output is in overcurrent, power transistor must be turned off immediately. In that case, the power transistor will not be damaged by the excessive current. If over-load or short-circuit condition happens, the oscillation frequency will be reduced, which make the power transistor bears less heat, so the power transistor is protected from damage. 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 7 of 7 QW-R103-035.H