Техническая Спецификация для Linear Technology LTM4619EV Demo Board µModule Regulator with Tracking DC1453A DC1453A
Модели
DC1453A
LTM4619
7
4619fb
siMpliFieD block DiagraM
Decoupling requireMenTs
4619 BD
INTV
CC
PGOOD
MODE/PLLIN
EXTV
CC
TK/SS1
RUN1
COMP1
TK/SS2
RUN2
COMP2
FREQ
SGND
M3
M4
INTERNAL
COMP
INTERNAL
FILTER
C
SS2
INTERNAL
FILTER
10µF
1.5µF
L2
1.5µH
60.4k
C
IN
+
V
IN
4.5V TO 26.5V*
C
OUT2
R
SET2
19.1k
+
V
OUT2
3.3V/4A
V
FB2
PGND
M1
M2
C
SS1
V
IN
POWER
CONTROL
10µF
L1
1.5µH
60.4k
C
OUT1
R
SET1
28k
+
V
OUT1
2.5V/4A
V
FB1
PGND
PGND
SW1
SW1
SW2
1.5µF
PGND
INTERNAL
COMP
*USE EXTV
CC
FOR V
IN
≤ 5.5V, OR TIE V
IN
AND EXTV
CC
TOGETHER FOR V
IN
≤ 5.5V
R1
R2
R2
R1
+R2
• V
IN
= UVLO THRESHOLD = 1.22V
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
C
IN
External Input Capacitor Requirement
(V
IN
= 4.5V to 26.5V, V
OUT1
= 2.5V, V
OUT2
= 3.3V)
I
OUT1
= 4A, I
OUT2
= 4A
10
µF
C
OUT1
C
OUT2
External Output Capacitor Requirement
(V
IN
= 4.5V to 26.5V, V
OUT1
= 2.5V, V
OUT2
= 3.3V)
I
OUT1
= 4A
I
OUT2
= 4A
200
200
µF
µF
T
A
= 25°C. Use Figure 1 configuration.
Figure 1. Simplified LTM4619 Block Diagram