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UC2638 Datasheet(PDF) 3 Page - Texas Instruments |
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UC2638 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 9 page 3 UC1638 UC2638 UC3638 ELECTRICAL CHARACTERISTICS Unless otherwise specified; VCC = 15V, VEE =–15V, CT = 680pF, RT = 3k, VPVSET = 1.5V, VCOMP = 0V, VCSOUT = 0V, VDB = REF, VEXTREF = 0V, VSD = VCC – 3V, TA = −55°C to 125°C for the UC1638, −25°C to 85°C for the UC2638, 0°C to 70°C for the UC3638. TA =TJ. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Overall Supply Current, Operating 15 23 mA UVLO Threshold Reference to VEE 9 10 V UVLO Hysteresis Reference to VEE 1 V Voltage Amplifier Input Offset Voltage COMP = 0V −15 0 15 mV VSENSE Bias Current 0 0.5 2 mA Open Loop Gain COMP = −5V to +5V 75 100 dB CMRR VCM = −5V to +5V 70 100 dB PSRR VCM = 0V, VCC − VEE = 10V to 36V 70 90 dB VOUT High INV = −0.1V, RL = 10k 13 13.6 V VOUT Low INV = +0.1V, RL = 10k −13.8 –13 V Slew Rate Rising and Falling Overdrive = ±1V 12 V/ µs Output Source Current COMP Shorted to VEE 5 15 mA Output Sink Current COMP Shorted to VCC 15 40 mA Gain Bandwidth Product FIN = 100kHz, 10mV p-p 1 5 MHz 5V Reference Output Voltage IREF = −1mA, TA = 25°C 4.925 5 5.075 V Output Voltage IREF = −1mA 4.875 5 5.125 V Load Regulation IREF = −1mA to −10mA −15 2 15 mV Line Regulation VCC - VEE = 10V to 36V −15 2 15 mV Short Circuit Current VREF =0V 15 70 mA Oscillator Initial Accuracy TA = 0°C – 70°C 86 98 110 kHz Voltage Stability VCC − VEE = 10V to 36V 2 % Total Variation Line, Temperature 76 98 120 kHz PVSET Input Bias Current 0.5 3 µA PVSET Input Voltage Range (Note 1) 0.5 VREF V Amplitude Limit (Note 1) VEE+3 VCC −3V AOUT1, BOUT1 Output Drivers Output Low Voltage IOUT = 1mA, Ref. to PVE, PVE = 0V 0.9 1.3 V IOUT = 50mA 1.2 1.8 V Leakage Current Output Voltage = 50V 0.1 50 µA AOUT2, BOUT2 Output Drivers Output High Voltage IOUT = −20mA, Ref. to PVE, PVE = 0V 12.2 13.5 V IOUT = −100mA, Ref. to PVE, PVE = 0V 12 13.5 V Output High Clamp Level IOUT = −20mA, Ref. to PVE, PVE = VEE 14.4 16.5 V Output Low Voltage IOUT = 20mA, Ref. to PVE, PVE = 0V 0.4 1 V IOUT = 100mA, Ref. to PVE, PVE = 0V 0.6 2.2 V Output Rise Time COUT = 1nF 50 100 ns Output Fall Time COUT = 1nF 50 100 ns |
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