UPD16874 查看數據表（PDF） - NEC => Renesas Technology

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生产厂家

UPD16874

QUAD Pch HIGH-SIDE SWITCH FOR USB

NEC => Renesas Technology 

µPD16874

On Detection of Overcurrent

5V

IN (Input)

Flg

(Output)

CTL

(Input)

OUT

(Output)

5V

GND

5V

GND

5V

GND

Overcurrent

IOUT

detection threshold

When overcurrent

(inrush current)

is detected

Slow

start

period

When overcurrent is detected

(output is short-circuited)

If an overcurrent is detected after the overcurrent detection delay time of 20 µs, the IC executes a slow-start

operation again.

If an overcurrent is detected while the IC is executing the slow-start operation again, it is assumed that the output

is short-circuited and the FLG pin goes low. When the CTL signal is deasserted inactive, OUT is turned OFF and

FLG goes high. If the CTL signal is asserted active, OUT is turned back ON unless the undervoltage lockout circuit

or thermal shutdown circuit is activated.

Data Sheet S13894EJ1V0DS

9

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