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UC1903L 数据表(PDF) 5 Page - Texas Instruments |
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UC1903L 数据表(HTML) 5 Page - Texas Instruments |
5 / 16 page UC1903 +VIN REFERENCE CIRCUIT 1.25V Q2 Q1 Q3 R1 R2 R3 15 W 2.5kW 2.5kW 2.5V OUTPUT RA RS VADJ BIAS CANCELLATION ANDMIRROR CIRCUITS I = O V ADJ R4 R4 8kW R5 R6 R7 R8 1.84kW 0.16kW 0.16kW 1.84kW IOC IOD Q5 Q4 IOB IOA TO OVHYSTERESIS CONTROL OVTHRESHOLD FAULTWINDOW THREAHOLDandHYSTERESIS CIRCUITS UVTHRESHOLD TO UVHYSTERESIS CONTROL Typical Characteristics 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -55 -35 -15 5 25 45 65 85 105 125 T -JunctionTemperature-°C J Typical2.5VReference vs TemperatureCharacteristic 40 -55 -35 -15 5 25 45 65 85 105 125 T -JunctionTemperature-°C J TypicalFaultDelay vs TemperatureCharacteristic(C 270pF) DELAY ≥ 35 30 25 20 UC1903 UC2903 UC3903 www.ti.com ........................................................................................................................................ SLUS233A – OCTOBER 1999 – REVISED SEPTEMBER 2008 Block Diagram A. The UC1903 fault window circuitry generates OV and UV thresholds centered around the 2.5-V reference. Window magnitude and threshold hysteresis are proportional to the window adjust input voltage at Pin 4. Figure 1. Operation and Application Information Copyright © 1999–2008, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): UC1903 UC2903 UC3903 |
类似零件编号 - UC1903L |
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类似说明 - UC1903L |
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