SC471 Datasheet, PDF (8/27 Pages) Semtech Corporation – Synchronous Buck Controller with Multi-Level VOUT Transition Support

POWER MANAGEMENT
Block Diagram
SC471/SC471A
VOUT
VBAT
BST
DH
DRV
LX
+5V
DL
DRV
ILIM
Valley
I-Limit
Q
S
QB
R
FB
D1
D0
+5V
VCC
UVLO
0.75V REF
TON
Predictor
Control
and Status
RTN
VOUT
G0
G1
EN
PGD
PAD
GND
Note: Shown is SC471; GO and G1 are inverted on SC471A.
Power
Good
+5V
© 2006 Semtech Corp.
8
www.semtech.com