Datasheet

LTM4622
8
Rev. G
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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
= 2.5A 4.7 10 µF
C
OUT
External Output Capacitor Requirement
(V
IN
= 3.6V to 20V, V
OUT
= 1.5V)
I
OUT
= 2.5A 22 47 µF
Figure1. Simplified LTM4622 Block Diagram
POWER CONTROL
FB2
60.4k
2.2µF
0.1µF
40.2k
0.22µF
22µF
INTV
CC
V
OUT2
TRACK/SS2
0.1µF
TRACK/SS1
RUN1
RUN2
SYNC/MODE
COMP1
1µF
V
OUT1
V
IN1
V
IN2
10k
PGOOD1
V
OUT1
1.2V
2.5A
V
IN
3.6V TO 20V
INTV
CC
GND
1µH
4622 BD
FREQ
324k
INTERNAL
COMP
COMP2
FB1
60.4k
60.4k
V
OUT1
10k
PGOOD2
INTV
CC
47µF
0.22µF
1µF
V
OUT2
V
OUT2
1.5V
2.5A
GND
1µH
47µF
INTERNAL
COMP
10µF
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