BD9134MUV_0909 Datasheet, PDF (13/18 Pages) Rohm – Output 2A or More High-efficiency Step-down Switching Regulator with Built-in Power MOSFET

BD9134MUV
Technical Note
Rf
Cf
VCC
Cin
EN
PVCC
VCC
CBST
VOUT
ADJ
L
ITH
GND,PGND
SW
VOUT
RITH
ESR
RO
CITH
CO
Fig.32 Typical application
Stable feedback loop may be achieved by canceling the pole fp (Min.) produced by the output capacitor and the load resistance
with CR zero correction by the error amplifier.
fz(Amp.)= fp(Min.)
1
2π×RITH×CITH
=
1
2π×ROMax.×CO
www.rohm.com
○^c 2009 ROHM Co., Ltd. All rights reserved.
13/17
2009.09 - Rev.B