전자부품 데이터시트 검색엔진 |
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UC1832 데이터시트(PDF) 4 Page - Texas Instruments |
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UC1832 데이터시트(HTML) 4 Page - Texas Instruments |
4 / 8 page Unless otherwise stated, specifications hold for TA = 0°C to 70°C for the UC3832/3, –25°C to 85°C for the UC2832/3, and –55°C to 125°C for the UC1832/3, +VIN = 15V, Driver sink = +VIN, C/S(+) voltage = +VIN. TA=TJ. ELECTRICAL CHARACTERISTICS (cont.) UC1832/3 UC2832/3 UC3832/3 PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Error Amplifier (cont.) IOL VCOMP = 2V, C/S(-) = +VIN 100 500 700 µA VCOMP = 2V, C/S(-) = +VIN - 0.4V 2 6 mA Driver Maximum Current Driver Limit & Source pins common; TJ = 25°C 200 300 400 mA Over Temperature 100 300 450 mA Limiting Voltage (UCx832 only) Driver Limit to Source voltage at current limit, ISOURCE = -10mA; TJ = 25°C (Note 6) .72 V Internal Current Sense Resistance TJ = 25°C (Note 6) 2.4 Ω Pull-Up Current at Driver Sink Compensation/Shutdown = 0.4V; Driver Sink = +VIN - 1V -800 -300 -100 µA Compensation/Shutdown = 0.4V, +VIN = 36V; Driver Sink = 35V -1000 -300 -75 µA Pull-Down Current at Driver Source Compensation/Shutdown = 0.4V; Driver Source = 1V 150 300 700 µA Saturation Voltage Sink to Source Driver Source = 0V; Driver Current = 100mA 1.5 V Maximum Source Voltage Driver Sink = +VIN, Driver Current = 100mA Volts below +VIN 3.0 V UVLO Sink Leakage +VIN = C/S(+) = C/S(-) = 2.5V, Driver Sink = 15V, Driver Source = 0V, TA = 25°C 25 µA Maximum Reverse Source Voltage Compensation/Shutdown = 0V; ISOURCE = 100 µA, +VIN = 3V 1.6 V Thermal Shutdown 160 °C Note 3: On the UCx833 this voltage is defined as the regulating level at the error amplifier inverting input, with the error amplifier driving VSOURCE to 2V. Note 4: These parameters are first-order supply-independent, however both may vary with supply for +VIN less than about 4V. This supply variation will cause a slight change in the timer period and duty cycle, although a high off-time/on-time ratio will be main- tained. Note 5: With recommended RT value of 200k, TOFF ≈ RT CT * ln(Vu/Vl) ±10%. Note 6: The internal current limiting voltage has a temperature dependence of approximately -2.0mV/°C, or -2800ppm/°C. The inter- nal 2.4 Ω sense resistor has a temperature dependance of approximately +1500ppm/°C. UDG-92041-1 APPLICATION AND OPERATION INFORMATION NPN Pass (Local 100mA Regulator) (UCx833) 4 |
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