参数资料
型号: LTM4619IV#PBF
厂商: Linear Technology
文件页数: 7/24页
文件大小: 0K
描述: IC SWIT REG BUCK 4A ADJ 144LGA
产品培训模块: Power Module vs. Discrete DC to DC
软件下载: LTM4619 Spice Model
设计资源: DC1453A Design Files
LTM4619IV#PBF Footprint.bxl
特色产品: μModule Products
标准包装: 119
系列: µModule®
类型: 非隔离(POL)
输出数: 2
电压 - 输入(最小): 4.5V
电压 - 输入(最大): 26.5V
Voltage - Output 1: 0.8 ~ 5 V
Voltage - Output 2: 0.8 ~ 5 V
电流 - 输出(最大): 4A,4A
安装类型: 表面贴装
封装/外壳: 144-LGA
尺寸/尺寸: 0.59" L x 0.59" W x 0.11" H(15.0mm x 15.0mm x 2.8mm)
包装: 托盘
工作温度: -40°C ~ 125°C
产品目录页面: 2711 (CN2011-ZH PDF)
配用: DC1453A-ND - BOARD EVAL LTM4619
LTM4619
SIMPLIFIED BLOCK DIAGRAM
INTERNAL
FILTER
1.5μF
+
C IN
V IN
4.5V TO 26.5V*
V IN
INTV CC
PGOOD
MODE/PLLIN
EXTV CC
TK/SS1
M1
M2
L1
1.5μH
10μF
+
PGND
SW1
V OUT1
2.5V/4A
C OUT1
R1
R2
C SS1
RUN1
COMP1
60.4k
PGND
V FB1
? ? R1 + R2 ? ? ? V IN
?   R2   ?
= UVLO THRESHOLD = 1.22V
TK/SS2
C SS2
RUN2
COMP2
INTERNAL
COMP
POWER
CONTROL
M3
M4
L2
1.5μH
1.5μF
10μF
+
R SET1
28k
PGND
SW2
V OUT2
3.3V/4A
C OUT2
FREQ
SGND
INTERNAL
COMP
INTERNAL
FILTER
60.4k
PGND
V FB2
R SET2
19.1k
4619 BD
*USE EXTV CC FOR V IN ≤ 5.5V, OR TIE V IN AND EXTV CC TOGETHER FOR V IN ≤ 5.5V
Figure 1. Simplified LTM4619 Block Diagram
DECOUPLING REQUIREMENTS
T A = 25°C. Use Figure 1 configuration.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
C IN
C OUT1
C OUT2
External Input Capacitor Requirement
(V IN = 4.5V to 26.5V, V OUT1 = 2.5V, V OUT2 = 3.3V)
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
I OUT1 = 4A
I OUT2 = 4A
10
200
200
μF
μF
μF
4619fb
For more information www.linear.com/LTM4619
7
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