BA9737KV Просмотр технического описания (PDF) - ROHM Semiconductor

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BA9737KV

4-channel switching regulator controller

ROHM Semiconductor 

Regulator ICs

FOperation notes

(1) Use short and wide wiring tracks for the power sup-

ply and ground to keep the mutual impedance as small

as possible, and use inductors and capacitors to keep

ripple to a minimum.

(2) Great care has been paid to the quality of this com-

ponent. However, if the absolute maximum ratings for

temperature and applied voltage are exceeded, the IC

may be destroyed.

Since it is not possible to predict whether it will be in short

mode or open mode if the IC is destroyed, if there is a

chance that the maximum ratings of the IC will be ex-

ceeded, use appropriate physical protective measures

(fuses etc.).

BA9737KV

(3) Set the dead-time input voltage to 0.58V or more.

(4) This IC does not use an internal circuit to generate

the output on peak current, so we recommend that you

connect capacitors to each end of RBIAS to externally gen-

erate the on peak current (after taking power dissipation

and efficiency into consideration). In this case, there is a

possibility that the output waveform may become unsta-

ble due to the current impedance, so we recommend that

you connect resistors (of about 100Ω to 500Ω) in series

with the off peak capacitors.

FExternal dimensions (Units: mm)

416

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