rt9238 ETC-unknow, rt9238 Datasheet - Page 21

• Manufacturer Part Number: rt9238
• Description: Vrm 8.5 Pwm And Triple Linear Power System Controller
• Manufacturer: ETC-unknow

RT9238
Preliminary
given operating V
is sufficiently large to provide the
CE
desired output load current when the base is fed with
the minimum driver output current.
In order to ensure the strict timing/level requirement
of OUT4, a NPN transistor is recommended for use
as a pass element on this output (Q5). An low gate
threshold NMOS could be used, but meeting the
requirements would then depend on the VCC bias
being sufficiently high to allow control of the
MOSFET.
DS9238-01 July 2001
www.richtek-ic.com.tw
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