LTC3129_15 Datasheet, PDF (9/30 Pages) Linear Technology – 15V, 200mA Synchronous Buck-Boost DC/DC Converter with 1.3A Quiescent Current

BLOCK DIAGRAM
LTC3129
V_IN
V_IN
BST1
SW1
SW2
BST2
V_REF
START
V_CC
LDO
V_{CC_GD}
V_CC
4.1V
V_CC
DRIVER
START
V_REF
1.175V
V_REF
V_{REF_GD}
RUN
+
0.9V –
START
+
1.22V –
V_{IN 1.175V}
–
+
SD
UVLO
DRIVER
DRV_B
DRV_A
I_SENSE
500mA
+
–
I_LIM
ENABLE
I_SENSE –
20mA +
I_ZERO
RESET SOFT-START
A
I_SENSE
D
B
I_SENSE
C
LOGIC
PWM
+
THERMAL
SHUTDOWN
–
V_OUT
V_CC
DRIVER
NC
DRIVER
NC
DRV_C
DRV_D
UV ^–
FB
+ 1.1V
I_SENSE
–
V_C
+
1.175V
V_OUT
MPPC
+
1.175V –
PWM
5M
–
SLEEP
100mV +
GND
OSC
600mV
–
+
CLAMP
PGND
–
–7.5% +
PGOOD
3129 BD
For more information www.linear.com/LTC3129
3129fb
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