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参数资料
| 型号： | LTC4252A-1CMS#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | Negative Voltage Hot Swap Controllers; Package: MSOP; No of Pins: 10; Temperature Range: 0°C to +70°C |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封装： | LEAD FREE, PLASTIC, MSOP-10 |
| 文件页数： | 1/36页 |
| 文件大小： | 394K |
| 代理商： | LTC4252A-1CMS#PBF |
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LTC4252-1/LTC4252-2
LTC4252A-1/LTC4252A-2
1
425212fb
The LTC
4252 negative voltage Hot SwapTM controller
allows a board to be safely inserted and removed from a
live backplane. Output current is controlled by three stages
of current limiting: a timed circuit breaker, active current
limiting and a fast feedforward path that limits peak
current under worst-case catastrophic fault conditions.
Adjustable undervoltage and overvoltage detectors dis-
connect the load whenever the input supply exceeds the
desired operating range. The LTC4252’s supply input is
shunt regulated, allowing safe operation with very high
supply voltages. A multifunction timer delays initial start-
up and controls the circuit breaker’s response time. The
circuit breaker’s response time is accelerated by sensing
excessive MOSFET drain voltage, keeping the MOSFET
within its safe operating area (SOA). An adjustable soft-
start circuit controls MOSFET inrush current at start-up.
The LTC4252-1/LTC4252A-1 latch off after a circuit breaker
fault times out. The LTC4252-2 provides automatic retry
after a fault. The LTC4252A-1/LTC4252A-2 feature tight
±1% undervoltage/overvoltage threshold accuracy. The
LTC4252 is available in either an 8-pin or 10-pin MSOP.
■ Hot Board Insertion
■ Electronic Circuit Breaker
■ – 48V Distributed Power Systems
■ Negative Power Supply Control
■ Central Office Switching
■ High Availability Servers
■ ATCA
■ Allows Safe Board Insertion and Removal from a
Live – 48V Backplane
■ Floating Topology Permits Very High Voltage
Operation
■
Programmable Analog Current Limit With Circuit
Breaker Timer
■ Fast Response Time Limits Peak Fault Current
■
Programmable Soft-Start Current Limit
■ Programmable Timer with Drain Voltage
Accelerated Response
■
±1% Undervoltage/Overvoltage Threshold Accuracy
(LTC4252A)
■ Adjustable Undervoltage/Overvoltage Protection
■
LTC4252-1/LTC4252A-1: Latch Off After Fault
■ LTC4252-2: Automatic Retry After Fault
■ Available in 8-Pin and 10-Pin MSOP Packages
Negative Voltage
Hot Swap Controllers
– 48V/2.5A Hot Swap Controller
4252-1/2 TA01
GND
OV
UV
VEE
VIN
SENSE
SS
TIMER
GATE
PWRGD
DRAIN
LTC4252-1
R1
402k
1%
R2
32.4k
1%
CT
0.33
F
CSS
68nF
CC
18nF
–48V
RS
0.02
Q1
IRF530S
VOUT
RC
10
R3
5.1k
RIN
3
× 1.8k IN SERIES
1/4W EACH
C1
10nF
CIN
1
F
CL
100
F
GND
(SHORT PIN)
+
RD 1M
LOAD
EN
*
* M0C207
4252-1/2 TA01a
GATE
5V/DIV
SENSE
2.5A/DIV
PWRGD
10V/DIV
1ms/DIV
VOUT
20V/DIV
Start-Up Behavior
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Hot Swap is a trademark of Linear Technology Corporation.
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4252A-1CMS#TRPBF | Negative Voltage Hot Swap Controllers; Package: MSOP; No of Pins: 10; Temperature Range: 0°C to +70°C |
| LTC4252A-1IMS#PBF | Negative Voltage Hot Swap Controllers; Package: MSOP; No of Pins: 10; Temperature Range: -40°C to +85°C |
| LTC4252A-1IMS#TRPBF | Negative Voltage Hot Swap Controllers; Package: MSOP; No of Pins: 10; Temperature Range: -40°C to +85°C |
| LTC4252A-2CMS#PBF | Negative Voltage Hot Swap Controllers; Package: MSOP; No of Pins: 10; Temperature Range: 0°C to +70°C |
| LTC4252A-2CMS#TRPBF | Negative Voltage Hot Swap Controllers; Package: MSOP; No of Pins: 10; Temperature Range: 0°C to +70°C |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4252A-1CMSTR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers |
| LTC4252A-1CMSTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers |
| LTC4252A-1IMS | 功能描述:IC CTRLR HOTSWAP NEG VOLT 10MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| LTC4252A-1IMS#PBF | 功能描述:IC CNTRLR HOTSWAP NEGVOLT 10MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| LTC4252A-1IMS#TR | 功能描述:IC CTRLR HOTSWAP NEG VOLT 10MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
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