UTC 51494 LINEAR INTEGRATED CIRCUIT
DESCRIPTION
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 SYMBOL RATING UNIT
Supply Voltage Vcc 42 V
Voltage from any pin to ground (except pin8 &
pin11)
Collector Output Voltage Vc1, Vc2 42 V
Peak Collector Output Ic1, Ic2 250 mA
Power dissipation PD 1500 mW
Operating Temperature Range Topr 0 to +70 °C
Storage Temperature Range Tsag -65 to +150 °C
Vin Vcc+0.3 V
UTC UNISONIC TECHNOLOGIES CO. LTD
QW-R103-005,A
1
UTC 51494 LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified , Ta=0~70°C ,VCC=15V,f=10kHz,)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Reference Section
Reference voltage Vref Iref =1.0mA 4.75 5 5.25 V
Line Regulation Vline 7V<Vcc<40V 2 25 mV
Load Regulation Viload 1mA<Iref<5mA 1 15 mV
Temperature Coefficient 0°C <Fa<70°C 0.01 0.03 %/°C
Oscillator section
Oscillator Frequency Fosc CT=0.01µF,RT=12kΩ 10 kHz
Oscillator Frequency Change
Over Operating Temperature
Range
Dead Time Control Section
Input Bias Current ( Pin 4 ) Iib(dt) Vcc =15V ; 0V<V4<5.25V -2 -10 µA
Maximum Duty cycle,
Each output
Input Threshold Voltage :
Zero Duty
Max Duty
Error Amplifier Section
Input offset Voltage Vics V3=2.5V 2 10 mV
Input offset Current Iics V3=2.5V 25 250 nA
Input bias Current Iib V3=2.5V 0.2 1 µA
Input Common-mode Voltage
Range
Large Signal Open-Loop Voltage
Range
Unity-Gain Band width fc 650 kHz
Output Section
Collector off-state current Ic(off) VCC=VC=40V,VE=0 2 100 µA
Emitter off-state Current Ie(off) VCC=VC=40V,VE=0 -100 µA
Output Saturation Voltage
Common-Emitter
Output Control (pin13)
Standby Power Supply Current Icc 6 10 mA
Output AC Characteristic
Raise Time
Common-Emitter
Fall Time
Common-Emitter
PWM Comparator Section
Inhibit Threshold Voltage Vthi Zero Duty cycle 4 4.5 V
Output Source Current Io+ 0.5V < V3 < 3.5V 2 mA
Output Sink Current Io- 0.5V < V3 < 3.5V -0.2 -0.6 mA
∆fosc CT=0.01µF,RT=12kΩ
Dc(max) Vcc = 15V; Pin 4 = 0V
Output Control Pin = Vref
Vth
Vicr 7V <Vcc< 40V -0.3 Vcc V
Gvo 0.5V < V3 < 3.5V 60 74 dB
Vce(sat) VE=15V,Lc=200mA 1.1 1.3 V
Tr 100 200 ns
Tr 25 100 ns
43 45 %
0
2 %
3 3. 3 V
UTC UNISONIC TECHNOLOGIES CO. LTD
QW-R103-005,A
2