LTM4619 Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LTM4619 Datasheet PDF : 24 Pages
| |||
SIMPLIFIED BLOCK DIAGRAM
LTM4619
VIN
R1
R2
¥
§¦
R2
R1 R2
´
¶µ
•
VIN
= UVLO THRESHOLD = 1.22V
INTVCC
PGOOD
MODE/PLLIN
EXTVCC
TK/SS1
CSS1
RUN1
COMP1
TK/SS2
CSS2
RUN2
COMP2
INTERNAL
COMP
FREQ
SGND
INTERNAL
COMP
INTERNAL
FILTER
INTERNAL
FILTER
POWER
CONTROL
1.5μF
M1
L1
M2
10μF
60.4k
1.5μF
M3
L2
M4
10μF
60.4k
VIN
+
4.5V TO 26.5V*
CIN
PGND
SW1
VOUT1
+
2.5V/4A
COUT1
PGND
VFB1
RSET1
28k
PGND
SW2
VOUT2
+
3.3V/4A
COUT2
PGND
VFB2
RSET2
19.1k
4619 BD
*USE EXTVCC FOR VIN ≤ 5.5V, OR TIE VIN AND EXTVCC TOGETHER FOR VIN ≤ 5.5V
Figure 1. Simplified LTM4619 Block Diagram
DECOUPLING REQUIREMENTS TA = 25°C. Use Figure 1 configuration.
SYMBOL
CIN
COUT1
COUT2
PARAMETER
External Input Capacitor Requirement
(VIN = 4.5V to 26.5V, VOUT1 = 2.5V, VOUT2 = 3.3V)
External Output Capacitor Requirement
(VIN = 4.5V to 26.5V, VOUT1 = 2.5V, VOUT2 = 3.3V)
CONDITIONS
IOUT1 = 4A, IOUT2 = 4A
IOUT1 = 4A
IOUT2 = 4A
MIN TYP MAX UNITS
10
μF
200
μF
200
μF
4619f
7
Share Link: 