BD9639MWV_16 Datasheet, PDF (9/26 Pages) Rohm – Switching Regulator ICs

BD9639MWV
(5) Internal Supply Voltage
(a) Function
Regulator input voltage is supplied by OUT1.
Output voltage is 2.5[V] is not available outside the chip and is used only to power up internal circuit.
This internal supply is used during PWM mode when both XSHDN1 and XSHDN24 are “HIGH”.
OUT1
VCC
Reference
Voltage
Internal
power
supply
(b) Start-up Sequence
3.7[V]to 5.5[V]
VCC
0[V]
XSHDN 24
Internal power supply 0[V]
H input voltage
2.5[V]
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
9/22
TSZ02201-0313AA400630-1-2
09.Feb.2016 Rev.001