Datasheet

LTM4627
9
4627fc
For more information www.linear.com/LTM4627
BLOCK DIAGRAM
Figure 1. Simplified LTM4627 Block Diagram
POWER
CONTROL
C
V
OUT
V
IN
5.1V
1M
60.4k
f
SET
RUN
V
FB
SGND
COMP
V
OUT_LCL
R2
R1
MODE_PLLIN
TRACK/SS
R
fSET
100k
R
FB
90.9k
C
SS
4627 F01
0.47µH
M1
V
OUT
V
OUT
1V
15A
V
IN
V
IN
4.5V TO 20V
M2
INTERNAL
COMP
INTERNAL
LOOP
FILTER
INTV
CC
250k
DIFF_OUT
V
OSNS
+
V
OSNS
–
GND
PGOOD
INTV
CC
EXTV
CC
> 1.4V = ON
< 1.1V = OFF
MAX = 5V
–
–
+
+
1.5µF
10µF
+
C
IN
C
OUT
+
10k
INTV
CC
DIFF
AMP
DECOUPLING REQUIREMENTS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
C
IN
External Input Capacitor Requirement
(V
IN
= 4.5V to 20V, V
OUT
= 1.5V)
I
OUT
= 15A 66 µF
C
OUT
External Output Capacitor Requirement
(V
IN
= 4.5V to 20V, V
OUT
= 1.5V)
I
OUT
= 15A 200 µF
T
A
= 25°C. Use Figure 1 configuration.