sc1189 Semtech Corporation, sc1189 Datasheet - Page 5

• Manufacturer Part Number: sc1189
• Description: Sc1189 Programmable Synchronous Dc/dc Converter, Dual Ldo Controller
• Manufacturer: Semtech Corporation

POWER MANAGEMENT
Block Diagram
2007 Semtech Corp.
VOSENSE
VID25MV
PWRGD
LDOEN
LDOS1
GATE1
VID3
VID2
VID1
VID0
OPEN
COLLECTORS
D/A
+
-
+
-
2.5V FET
CONTROLLER
REF
VCC
LDOV
ERROR
AMP
REF
+
-
CS-
OSCILLATOR
70mV
CS+
AGND
-
+
1.25V FET
CONTROLLER
+
-
5
CURRENT
LIMIT
GATE2
R
S
Q
LDOS2
EN
AGND
LEVEL SHIFT AND
HIGH SIDE DRIVE
SHOOT-THRU
CONTROL
SYNCHRONOUS
MOSFET DRIVE
www.semtech.com
SC1189
BSTH
DH
PGNDH
BSTL
DL
PGNDL