LTC3442 Datasheet, PDF (7/20 Pages) Linear Integrated Systems – Micropower Synchronous Buck-Boost DC/DC Converter with Automatic Burst Mode Operation

SI PLIFIED BLOCK DIAGRA
SW1
SW2
4
6
LTC3442
V_IN 9
R_{LIM 10}
R_T 2
SW A
SW B
GATE
DRIVERS
AND
ANTICROSS
CONDUCTION
SW D
SW C
REVERSE
AMP
–
A_V = 6
1V +
AVERAGE
I_LIM
PEAK CURRENT
+
LIMIT
5A –
V_IN
+
2.3V
–
UVLO
PWM
LOGIC
PWM
COMPARATORS
SLEEP
OSC
+
G_m = 1/60k
3A –
ERROR
AMP
1.22V
AUTOMATIC
BURST MODE
CONTROL AND
VC HOLD
SHDN/SS 1
V_IN
SHUTDOWN
SOFT-START
V_CC
SHUTDOWN
V_REF
SS
1.22V
V_REF
THERMAL
SHUTDOWN
8 V_OUT
12 FB
11 V_C
7 BURST
2
PGND
6
SGND
3442 BD
3442f
7