LTC3446EDE Datasheet, PDF (8/20 Pages) Linear Technology – Monolithic Buck Regulator with Dual VLDO Regulators

LTC3446
Block Diagram
3
I_TH
2
V_IN
BUCKFB
12
0.4V
0.8V
VOLTAGE
REFERENCE
ERROR
AMPLIFIER
+
–
+
V_B
I_TH
PARK
I_TH
LIMIT
–
BCLAMP
B
PMOS CURRENT
COMPARATOR
+
BURST
COMPARATOR
OSCILLATOR
SLOPE
COMPENSATION
SW
14
PGOOD
4
POWER
GOOD
ENBUCK
13
MODESEL
1
ENLDO1
11
SOFT-START
ENLDO2
8
SOFT-START
LOGIC
NMOS
OVERCURRENT
COMPARATOR
REVERSE
CURRENT
COMPARATOR
V_IN
+
V_LDO1
–
6µA
V_IN
+
V_LDO2
–
6µA
8
GND
15
EXPOSED
PAD
LV_IN
6
LV_OUT1
5
LV_FB1
10
LV_OUT2
7
LV_FB2
9
3446 BD
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