Datasheet
Table Of Contents
- Features
- Applications
- Description
- Typical Application
- Absolute Maximum Ratings
- Pin Configuration
- Order Information
- Typical Performance Characteristics
- Pin Functions
- Simplified Block Diagram
- Decoupling Requirements
- Operation
- Applications Information
- Typical Applications
- Package Description
- Package Photo
- Related Parts
- Design Resources
LTM4620A
10
4620afb
For more information www.linear.com/LTM4620A
SIMPLIFIED BLOCK DIAGRAM
DECOUPLING REQUIREMENTS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
C
IN1,
C
IN2
C
IN3,
C
IN4
External Input Capacitor Requirement
(V
IN1
= 4.75V to 16V, V
OUT1
= 1.5V)
(V
IN2
= 4.75V to 16V, V
OUT2
= 1.2V)
I
OUT1
= 13A
I
OUT2
= 13A (Note 8)
22
22
µF
µF
C
OUT1
C
OUT2
External Output Capacitor Requirement
(V
IN1
= 4.75V to 16V, V
OUT1
= 1.5V)
(V
IN2
= 4.75V to 16V, V
OUT2
= 1.2V)
I
OUT1
= 13A
I
OUT2
= 13A (Note 8)
300
300
µF
µF
T
A
= 25°C. Use Figure 1 configuration.
Figure 1. Simplified LTM4620A Block Diagram
4620A F01
TEMP
CLKOUT
RUN1
MODE_PLLIN
PHASEMD
TRACK1
= 100µA
4.7µF
SS
CAP
1µF
C
IN1
22µF
25V
V
IN
V
IN
C
IN2
22µF
25V
R
FB2
60.4k
MTOP1
MBOT1
POWER
CONTROL
2.2µF
0.56µH
60.4k
C
OUT1
R
FB1
40.2k
+
V
OUT1
1.5V/13A
V
OUT2
1.2V/13A
V
FB1
GND
GND
GND
GND
SW2
SW1
PGOOD2
PGOOD1
INTERNAL
COMP
INTERNAL
COMP
INTERNAL
FILTER
1µF
C
IN3
22µF
25V
MTOP2
MBOT2
C
IN4
22µF
25V
2.2µF
0.56µH
C
OUT2
+
+
–
60.4k
V
OUT1
V
OUT2
V
FB2
V
OUTS2
V
OUTS1
R
FSET
V
IN
R
T
V
IN
R
T
SS
CAP
DIFFOUT
DIFFN
DIFFP
COMP1
SGND
TRACK2
INTV
CC
EXTV
CC
RUN2
COMP2
f
SET
SGND