MPQ9842

– 36V, 2A, LOW IQ, SYNCHRONOUS STEP-DOWN CONVERTER

MPQ9842 Rev. 1.1

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24

7/29/2022

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shutdown command, but its charging path is

disabled.

Power Good (PG) Output

The

MPQ9842

has

a

power

good

(PG)

indicator. PG is the open drain of a MOSFET

and should be connected to VCC or another

vo

ltage source through a resistor (e.g.: 100kΩ).

In the presence of an input voltage, the

MOSFET turns on so that PG is pulled low

before SS is ready. When the regulator output

is within ±10% of its nominal output, the PG

output is pulled high after a delay, typically

30

μs. When the output voltage moves outside

of this range with a hysteresis, the PG output is

pulled low with a 50

μs delay to indicate a failure

output status.