LTC3548A Datasheet, PDF (7/20 Pages) Linear Technology – Dual Synchronous 400mA/800mA, 2.25MHz Step-Down DC/DC Regulator

BLOCK DIAGRAM
MODE/SYNC 6
REGULATOR 1
V_FB1 1
0.6V +
I_TH
EA
–
0.55V
–
UV
UVDET
+
+
OV
OVDET
0.65V
–
SHUTDOWN
RUN/SS1 2
0.6V REF
OSC
RUN/SS2 9
OSC
V_FB2 10
REGULATOR 2 (IDENTICAL TO REGULATOR 1)
SLOPE
COMP
–
EN
SLEEP
0.65V
+
BURST
S
Q
RS
LATCH
R
Q
SWITCHING
LOGIC
AND
BLANKING
CIRCUIT
BURST
CLAMP
–+
I_COMP
ANTI
SHOOT-
THRU
I_RCMP
PGOOD1
POR
COUNTER
PGOOD2
LTC3548A
V_IN
57
4 SW1
11 GND
V_IN
3 V_IN
8 POR
5 GND
3548A BD
7 SW2
3548af
7