UPD16876G 查看數據表（PDF） - NEC => Renesas Technology

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UPD16876G

SINGLE Pch HIGH-SIDE SWITCH FOR USB

NEC => Renesas Technology 

µPD16876

On Detection of Overcurrent

5V

IN (input)

FLG

(output)

CTL

(input)

OUT

(output)

LATCH = "L"

Iout

5V

GND

5V

GND

GND

5V

GND

Overcurrent detection

threshold

OUT

(output)

LATCH = "H"

Iout

Inrush current Slow

Output is

start short-circuited

5V

period

GND

Overcurrent detection

threshold

Inrush current Slow

Output is

start short-circuited

period

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

operation (output rise time: 5 ms TYP.) 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.

When LATCH = “H”, output is turned off at the timing of FLG = “L”.

Data Sheet S14288EJ1V0DS

11

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