电子工程世界电子工程世界电子工程世界

关键词

搜索

型号

搜索

LTC4417HGN

产品描述专业电源管理 (PMIC) LTC4417 - Prioritized PowerPath Controller
产品类别半导体    电源管理 IC    专业电源管理 (PMIC)   
文件大小426KB,共33页
制造商ADI(亚德诺半导体)
官网地址https://www.analog.com
下载文档 详细参数 全文预览

LTC4417HGN概述

专业电源管理 (PMIC) LTC4417 - Prioritized PowerPath Controller

LTC4417HGN规格参数

参数名称属性值
厂商名称ADI(亚德诺半导体)
产品种类专业电源管理 (PMIC)
RoHSN
安装风格SMD/SMT
封装 / 箱体SSOP-24
系列LTC4417

文档预览

下载PDF文档
FeaTures
n
n
n
n
LTC4417
Prioritized PowerPath™
Controller
DescripTion
The LTC
®
4417 connects one of three valid power supplies
to a common output based on priority. Priority is defined
by pin assignment, with V1 assigned the highest priority
and V3 the lowest priority. A power supply is defined as
valid when its voltage has been within its overvoltage (OV)
and undervoltage (UV) window continuously for at least
256ms. If the highest priority valid input falls out of the
OV/UV window, the channel is immediately disconnected
and the next highest priority valid input is connected to the
common output. Two or more LTC4417s can be cascaded
to provide switchover between more than three inputs.
The LTC4417 incorporates fast non-overlap switching
circuitry to prevent both reverse and cross conduction
while minimizing output droop. The gate driver includes
a 6V clamp to protect external MOSFETs. A controlled
output ramp feature minimizes start-up inrush current.
Open drain
VALID
outputs indicate the input supplies have
been within their OV/UV window for 256ms.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PowerPath, ThinSOT and Hot Swap are trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
n
n
n
n
n
n
n
n
applicaTions
n
n
n
n
Selects Highest Priority Supply from Three Inputs
Blocks Reverse and Cross Conduction Currents
Wide Operating Voltage Range: 2.5V to 36V
–42V Protection Against Reverse Battery
Connection
Fast Switchover Minimizes Output Voltage Droop
Low 28µA Operating Current
<1µA Current Draw from Supplies Less than V
OUT
1.5% Input Overvoltage/Undervoltage Protection
Adjustable Overvoltage/Undervoltage Hysteresis
P-Channel MOSFET Gate Protection Clamp
Cascadable for Additional Input Supplies
24-Lead Narrow SSOP and 4mm × 4mm QFN
Packages
Industrial Handheld Instruments
High Availability Systems
Battery Backup Systems
Servers and Computer Peripherals
Typical applicaTion
V1: 12V
WALL ADAPTER
V2: 14.8V Li-Ion
MAIN/SWAPPABLE
V3: 12V SLA
BACKUP
IRF7324
2A
OUTPUT
IRF7324
Priority Switching from 12V V1 to 14.8V V2
IRF7324
V2
V1
806k
UV1
39.2k
OV1
60.4k
V2
1.05M
UV2
31.6k
OV2
68.1k
V3
698k
UV3
16.9k
OV3
49.9k
GND
EN
SHDN
HYS
CAS
4417 TA01a
14.8V
12V
V
OUT
VS1 G1
VS2 G2
VS3 G3
V
OUT
1M
VALID1
VALID2
VALID3
1M
1M
V1
2V/DIV
V1 UV FAULT
V3 = 0V, I
L
= 2A
C
L
= 120µF
50ms/DIV
4417 TA01b
LTC4417
4417f
1

 
EEWorld订阅号

 
EEWorld服务号

 
汽车开发圈

 
机器人开发圈

About Us 关于我们 客户服务 联系方式 器件索引 网站地图 最新更新 手机版

站点相关: 大学堂 TI培训 Datasheet 电子工程 索引文件: 1339  261  637  2006  1637  50  48  21  2  6 

器件索引   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

北京市海淀区中关村大街18号B座15层1530室 电话:(010)82350740 邮编:100190

电子工程世界版权所有 京B2-20211791 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号 Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved