LA5683T 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LA5683T

4ch Switching Regulator Control IC

SANYO -> Panasonic 

LA5683T

SCP Pin

Charging of the SCP block starts when FB1 to FB4 are set to a low level due to a load shorting and the protection

circuit is activated if the block does not reset itself within the preset time tSCP (the protection circuit then turns off the

whole OUT channels).

1.25[V]

Charge with ISCP

Charging

tSCP

=

CSCP × VSCP

ISCP

[S]

tSCP SCP operation

SCP Charging

Dead Time Setup

• The dead time of channel 1 can be set by the voltage at DTC1.

VREF

Waveform of triangular wave input to PWM comparator

DTC1

VDTC1

VTH1_DTC

VDTC1

VTH2_DTC

The duty cycle D1 is calculated as follows:

VDTC1 − VTH2_DTC

D1 =

× 100[ % ]

VTH1_DTC − VTH2_DTC

• Channel 2

The dead time of channe 2 is fixed internally and the setting duty is 100%.

No.8214-7/12

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