UNISONIC TECHNOLOGIES CO., LTD P1690 Preliminary LINEAR INTEGRATED CIRCUIT 0.4A 150KHZ 65V BUCK DC TO DC CONVERTER DESCRIPTION The UTC P1690 is a PWM buck (step-down) DC/DC converter, fixed frequency of 150KHz, capable of driving a 0.4A load with high efficiency, low ripple and excellent line and load regulation. The P1690 built kinds of protect circuit inside. Such as OTP SCP and so on. SOP-8 FEATURES * Wide 5V~ 65V Operation Voltage * Maximum 0.4A Output Current * Output Adjustable from 1.25V~25V * High efficiency up to 85% * Maximum Duty Cycle 100% * Fixed 150KHz Switching Frequency * Built in OTP * Built in SCP * Built in OCP ORDERING INFORMATION Ordering Number P1690G-S08-R Package SOP-8 Packing Tape Reel MARKING www.unisonic.com.tw Copyright © 2016 Unisonic Technologies Co., Ltd 1 of 5 QW-R103-081.b P1690 Preliminary PIN CONFIGURATION PIN DESCRIPTION PIN NO. 1 2 3 4 5,6,7,8 PIN NAME VIN SW FB EN GND LINEAR INTEGRATED CIRCUIT DESCRIPTION Supply Voltage Input Pin. Power Switch Output Pin (SW). Feedback voltage Pin (FB). Enable Pin. Ground Pin. BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R103-081.b P1690 Preliminary LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN -0.3 ~ 70 V Feedback Pin Voltage VFB -0.3 ~ VIN V EN Pin Voltage VEN -0.3 ~ VIN V Output Switch Pin Voltage VSW -0.3 ~ VIN V Power Dissipation PD Internally limited mW Junction to Ambient, No Heatsink, Free Air θJA 60 °C/W Operating Junction Temperature TJ -40 ~ 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. ELECTRICAL CHARACTERISTICS (TA=25°C unless otherwise specified) PARAMETER SYMBOL System Parameters Test Circuit Figure1 FB Voltage VFB Efficiency η Efficiency η Efficiency η TEST CONDITIONS VIN=36V~65V, Iload=0.05A~0.3A VIN=36V,VOUT=15V, IOUT=0.3A VIN=48V, VOUT=15V, IOUT=0.4A VIN=60V, VOUT=15V, IOUT=0.4A MIN TYP MAX UNIT 1.225 1.25 88 87 83 1.275 V % % % ELECTRICAL CHARACTERISTICS (DC PARAMETERS) (VIN=48V, GND=0V, VIN & GND parallel connect a 33uf/100V capacitor; IOUT=0.2A, TA=25°C the others floating unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input Operation Voltage VIN 5 65 V Shutdown Supply Current ISTBY VEN=2V 85 200 uA Quiescent Supply Current Iq VON/OFF=0V, VFB=VIN 2.5 5 mA Oscillator Frequency Fosc 120 150 180 KHz Switch Current Limit IL VFB=0 0.4 A High (Regulator OFF) 1.6 V EN Pin Threshold VEN Low (Regulator ON) 0.8 V IH VEN=2.5V (OFF) 6 20 uA EN Pin Input Leakage Current VEN=0.5V (ON) 1 20 uA IL Output Saturation Voltage VCE VFB=0V, IOUT=0.4A 0.85 V Max. Duty Cycle DMAX VFB=0V 100 % UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 5 QW-R103-081.b P1690 Preliminary LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT VOUT=15V R1 2.7K R2 30K FB 3 VIN DC 24~65V UTC P1690 1 2 47uH/1A 4 5~8 GND L1 SW COUT D1 S210 EN 33uF CIN 100V 15V/0~0.4A 100uF 35V VOUT=1.25×(1+R2/R1) Figure 1. VOUT=5V R1 3.3K R2 10K FB 3 VIN DC 8~65V UTC P1690 1 5~8 GND 2 4 EN 33uF CIN 100V L1 SW 47uH/1A D1 S210 COUT 5V/0~0.4A 100uF 16V VOUT=1.25×(1+R2/R1) Figure 2 Note: Under different input and output voltage, in order to achieve loop stability, the need to use different capacity inductance. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R103-081.b P1690 LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS Efficiency VOUT=5V Efficiency VOUT=15V 92 85 VIN=24V VIN=8V VIN=36V 88 86 VIN=60V 84 VIN=12V 80 VIN=48V Efficiency (%) 90 Efficiency (%) Preliminary 75 VIN=24V 6V V IN=3 VIN=48V VIN=60V 70 82 65 80 78 0.1 0.15 0.2 0.25 0.3 0.35 0.4 ILOAD (A) 60 0.1 0.15 0.2 0.25 0.3 0.35 0.4 ILOAD (A) 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-R103-081.b