LV5636VH

PS No.A1979-8/8

(4) Pulse-by-Pulse over current protection (P by P)

The P by P stops switch-on operation of a certain cycle by force when the current of power MOSFET reaches the

maximum output peak current.

[P by P circuit diagram]

(5) Short circuit protector (SCP)

When output voltage of DC/DC decreases due to short-circuit; for example, SCP latches off the outputs of DC/DC and

LDO by timer.

When output voltage of DC/DC decreases and FB that is the error amplifier output turns to H, the internal counter starts,

latch-off occurs after 1.6ms.

To restart the output after latch-off, you need to input EN signal again.

(6) Output voltage switching function

Where CTL=High, 15V output setting is selected.

Where CTL=Low, 11V output setting is selected.

Logic

Error

Amp.

PWM

Comp.

Triangular

wave

P by P

Comp.

Power

SW pin

If the peak current

> 1.8A,

switching_on operation during

the cycle stops compulsorily

The current of power_Tr. is constantly monitored.

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