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TPS2321 Datasheet(PDF) 2 Page - Texas Instruments |
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TPS2321 Datasheet(HTML) 2 Page - Texas Instruments |
2 / 22 page TPS2320, TPS2321 DUAL HOT SWAP POWER CONTROLLER WITH INDEPENDENT CIRCUIT BREAKER SLVS276A – MARCH 200 – REVISED APRIL 2000 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 functional block diagram PREREG UVLO and Power-Up IN1 ISET1 ISENSE1 GATE1 Clamp Charge Pump 75 µA Pulldown FET Circuit Breaker dv/dt Rate Protection DISCH1 Logic FAULT TIMER Second Channel GATE2 ISENSE2 ISET2 IN2 DISCH2 Circuit Breaker VREG 50- µs Deglitch AGND DGND ENABLE 50 µA Terminal Functions TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION AGND 6 I Analog ground, connects to DGND as close as possible DGND 3 I Digital ground DISCH1 16 O Discharge transistor 1 DISCH2 15 O Discharge transistor 2 ENABLE/ ENABLE 14 I Active low (TPS2320) or active high enable (TPS2321) FAULT 13 O Overcurrent fault, open-drain output GATE1 1 O Connects to gate of channel 1 high-side MOSFET GATE2 2 O Connects to gate of channel 2 high-side MOSFET IN1 9 I Input voltage for channel 1 IN2 10 I Input voltage for channel 2 ISENSE1 8 I Current-sense input channel 1 ISENSE2 7 I Current-sense input channel 2 ISET1 12 I Adjusts circuit-breaker threshold with resistor connected to IN1 ISET2 11 I Adjusts circuit-breaker threshold with resistor connected to IN2 TIMER 4 O Adjusts circuit-breaker deglitch time VREG 5 O Connects to bypass capacitor, for stable operation |
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