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| UTC 51494 DESCRIPTION LINEAR INTEGRATED CIRCUIT The UTC 51494 is a monolithic bipolar integrate circuit that provides both 494 function and built in power good signal circuit for easy using 51494 can be easily implemented by just adding a capacitor. FEATURES *Fully integrated with compact 16-pin dip *All necessary functions included for most popular half bridge circuit. *Built-in power good delay and power fail lead function. *Power good delay time is linearly. *Proportional to external capacitor value. *Reduced external components for cost down and components for cost down and compact size. SOP-16 DIP-16 MAXIMUM RATINGS(Unless otherwise noted ,all is over operating free-air temperature Range) CHARACTERISTIC Supply Voltage Voltage from any pin to ground (except pin8 & pin11) Collector Output Voltage Peak Collector Output Power dissipation Operating Temperature Range Storage Temperature Range SYMBOL Vcc Vin Vc1, Vc2 Ic1, Ic2 PD Topr Tsag RATING 42 Vcc+0.3 42 250 1500 0 to +70 -65 to +150 UNIT V V V mA mW C C UTC UNISONIC TECHNOLOGIES CO. LTD 1 QW-R103-005,A UTC 51494 LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (Unless otherwise specified , Ta=0~70C ,VCC=15V,f=10kHz,) PARAMETER TEST CONDITIONS SYMBOL Reference Section Reference voltage Line Regulation Load Regulation Temperature Coefficient Vref Vline Viload Iref =1.0mA 7V 4.75 TYP 5 2 1 0.01 10 MAX 5.25 25 15 0.03 UNIT V mV mV %/C Oscillator section Oscillator Frequency Oscillator Frequency Change Over Operating Temperature Range Fosc fosc 2 kHz % Dead Time Control Section Input Bias Current ( Pin 4 Maximum Duty cycle, Each output Input Threshold Voltage : Zero Duty Max Duty ) Iib(dt) Dc(max) Vth 3 0 Vics Iics Iib Vicr Gvo fc Ic(off) Ie(off) Vce(sat) VCC=VC=40V,VE=0 VCC=VC=40V,VE=0 VE=15V,Lc=200mA V3=2.5V V3=2.5V V3=2.5V 7V Input offset Voltage Input offset Current Input bias Current Input Common-mode Voltage Range Large Signal Open-Loop Voltage Range Unity-Gain Band width Output Section Collector off-state current Emitter off-state Current Output Saturation Voltage Common-Emitter Output Control (pin13) Standby Power Supply Current Icc Tr Tr 6 100 25 10 200 100 mA ns ns Output AC Characteristic Raise Time Common-Emitter Fall Time Common-Emitter PWM Comparator Section Inhibit Threshold Voltage Output Source Current Output Sink Current Vthi Io+ IoZero Duty cycle 0.5V < V3 < 3.5V 0.5V < V3 < 3.5V 4 2 -0.2 -0.6 4.5 V mA mA UTC UNISONIC TECHNOLOGIES CO. LTD 2 QW-R103-005,A UTC 51494 PARAMETER Power Good Section Power Good Delay Time Power Fail Lead Time Output High Voltage Output Saturation Voltage Output Leakage Current LINEAR INTEGRATED CIRCUIT SYMBOL tpd Tp1 Voh Vsat Ioh TEST CONDITIONS Cd = 1 Cd = 0.47 Vpinn = 5V, IL = 1mA Vpinn = 5V, Isink = 4mA MIN 230 108 4.75 TYP 280 130 4 MAX 330 160 UNIT ms ms V V A 0.4 100 PIN DESCRIPTION PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 NAME EA1+ EA1EA0 DT CT RT GND C1 GND Cpg C2 Vcc P.G. Vref EA2EA+ FUNCTION Error amplifier noninverting input, same as pin 1 of 494 Error amplifier inverting input, same as pin 2 of 494 Error amplifier output and feedback, same as pin 3 of 494 Dead time control input, same as pin 4 of 494 Connect capacitor to oscillator circuit for operating frequency, same as pin 5 of 494 Connect resistor to oscillator circuit for operating frequency, same as pin 6 of 494 Ground terminal of IC, same as pin 7 of 494 Collector of output transistor one, same as pin 8 of 494 Ground terminal of IC Terminal for capacitor to determine power good delay time Collector of output transistor two, same as pin 11 of 494 Supply voltage, same as pin 12 of 494 Output for power good signal Reference voltage output, same as pin 14 of 494 Error amplifier inverting input, same as pin 15 of 494 Error amplifier noninverting input, same as pin 16 of 494 UTC UNISONIC TECHNOLOGIES CO. LTD 3 QW-R103-005,A UTC 51494 BLOCK DIAGRAM LINEAR INTEGRATED CIRCUIT Vcc Ref Out GND RT CT Dead-Time Control Non-inv Input Inv Input Non Inv Input Inv Input Feed-Back 12 14 7 Reference Regulator TF.E C1 8 C2 11 6 5 Osc Dead Time COMPARATOR + GND 9 + 4 - 1 2 16 15 3 EA1 + - PWM COMPARATOR - EA2 + P.G. + - 13 1.25V 10 Cpg UTC UNISONIC TECHNOLOGIES CO. LTD 4 QW-R103-005,A UTC 51494 LINEAR INTEGRATED CIRCUIT UCC 1.5K 0.01uF 43K 4.7K 4.7K 3 2 1 4 5 0.001U 14 13 12 11 8 51494 6 22K 7 9 0.68U 16 10 15 4.7K 12K 4.7K 2.2K 270 4148 2.2U 100K 150K -5U -12 +5 POWER GOOD UTC UNISONIC TECHNOLOGIES CO. LTD 5 QW-R103-005,A UTC 51494 LINEAR INTEGRATED 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. UTC UNISONIC TECHNOLOGIES CO. LTD 6 QW-R103-005,A |
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