Datasheet

LTM4603/LTM4603-1
9
4603fb
Figure 1. Simplified LTM4603/LTM4603-1 Block Diagram
siMpliFieD block DiagraM
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
= 6A 20 µF
C
OUT
External Output Capacitor Requirement
(V
IN
= 4.5V to 20V, V
OUT
= 1.5V)
I
OUT
= 6A 100 200 µF
T
A
= 25°C, V
IN
= 12V. Use Figure 1 configuration.
+
INTERNAL
COMP
SGND
COMP
PGOOD
UVLO
FUNCTION
RUN
V
IN
V
OUT_LCL
>1.9V = ON
<1V = OFF
MAX = 5V
MARG1
MARG0
MPGM
PLLIN
C
SS
INTV
CC
DRV
CC
TRACK/SS
V
FB
f
SET
50k
R2
R1
33.2k
R
SET
40.2k
50k
60.4k
V
OUT
1M
(50Ω, LTM4603-1)
5.1V
ZENER
POWER CONTROL
Q1
V
IN
4.5V TO 20V
V
OUT
1.5V
6A
Q2
10k
10k
10k50k
10k
INTV
CC
+
–
22µF
1.5µF
C
IN
+
C
OUT
PGND
V
OSNS
–
NOT INCLUDED
IN THE LTM4603-1
V
OSNS
–
= NC1
V
OSNS
+
= NC2
DIFFV
OUT
= NC3
V
OSNS
+
DIFFV
OUT
4603 F01
4.7µF
1µH