LTM4622A
8
Rev B
For more information
BLOCK DIAGRAM
DECOUPLING REQUIREMENTS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
C
IN
External Input Capacitor Requirement
(V
IN
= 3.6V to 20V, V
OUT
= 1.5V)
I
OUT
= 2A
4.7
10
µF
C
OUT
External Output Capacitor Requirement
(V
IN
= 3.6V to 20V, V
OUT
= 1.5V)
I
OUT
= 2A
22
47
µF
Figure 1. Simplified LTM4622A Block Diagram
POWER CONTROL
FB2
60.4k
2.2µF
0.1µF
8.25k
0.22µF
10µF
INTV
CC
V
OUT2
TRACK/SS2
0.1µF
TRACK/SS1
RUN1
RUN2
SYNC/MODE
COMP1
0.1µF
V
OUT1
V
IN1
V
IN2
10k
PGOOD1
V
OUT1
3.3V
2A
V
IN
8V TO 20V
INTV
CC
GND
2.2µH
4622A BD
FREQ
324k
INTERNAL
COMP
COMP2
FB1
60.4k
13.3k
V
OUT1
10k
PGOOD2
INTV
CC
10µF
47µF
0.22µF
0.1µF
V
OUT2
V
OUT2
5V
2A
GND
2.2µH
47µF
INTERNAL
COMP
