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参数资料
| 型号： | LTC4252-2CMS8#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: 8; Temperature Range: 0°C to +70°C |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封装： | LEAD FREE, PLASTIC, MSOP-8 |
| 文件页数： | 1/36页 |
| 文件大小： | 336K |
| 代理商： | LTC4252-2CMS8#PBF |
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LTC4252-1/LTC4252-2
LTC4252A-1/LTC4252A-2
1
425212fc
TYPICAL APPLICATION
FEATURES
DESCRIPTION
Negative Voltage
Hot Swap Controllers
The LTC4252 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.
–48V/2.5A Hot Swap Controller
Start-Up Behavior
APPLICATIONS
n Allows Safe Board Insertion and Removal from a
Live – 48V Backplane
n Floating Topology Permits Very High Voltage Operation
n Programmable Analog Current Limit With Circuit
Breaker Timer
n Fast Response Time Limits Peak Fault Current
n Programmable Soft-Start Current Limit
n Programmable Timer with Drain Voltage
Accelerated Response
n ±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
n Hot Board Insertion
n Electronic Circuit Breaker
n – 48V Distributed Power Systems
n Negative Power Supply Control
n Central Office Switching
n High Availability Servers
n ATCA
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
425212 TA01
–48RTN
OV
UV
VEE
VIN
SENSE
SS
TIMER
GATE
PWRGD
DRAIN
LTC4252-1
R1
402k
1%
R2
32.4k
1%
CT
0.33μF
DIN
DDZ13B**
CSS
68nF
CC
18nF
–48V
RS
0.02Ω
Q1
IRF530S
VOUT
RC
10Ω
R3
5.1k
RIN
3
× 1.8k IN SERIES
1/4W EACH
C1
10nF
CIN
1μF
CL
100μF
–48RTN
(SHORT PIN)
+
RD 1M
LOAD
EN
*
* M0C207
**DIODES, INC
RECOMMENDED FOR HARSH ENVIRONMENTS
425212 TA01a
GATE
5V/DIV
SENSE
2.5A/DIV
PWRGD
10V/DIV
1ms/DIV
VOUT
20V/DIV
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4252-2CMS8#TRPBF | Negative Voltage Hot Swap Controllers; Package: MSOP; No of Pins: 8; Temperature Range: 0°C to +70°C |
| LTC4252-2IMS8#PBF | Negative Voltage Hot Swap Controllers; Package: MSOP; No of Pins: 8; Temperature Range: -40°C to +85°C |
| LTC4252-2IMS8#TRPBF | Negative Voltage Hot Swap Controllers; Package: MSOP; No of Pins: 8; Temperature Range: -40°C to +85°C |
| LTC4253ACGN-ADJ#PBF | -48V Hot Swap Controller with Sequencer; Package: SSOP; No of Pins: 20; Temperature Range: 0°C to +70°C |
| LTC4253ACGN-ADJ#TRPBF | -48V Hot Swap Controller with Sequencer; Package: SSOP; No of Pins: 20; Temperature Range: 0°C to +70°C |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4252-2CMS8TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers |
| LTC4252-2CMS8TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers |
| LTC4252-2CMSPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers |
| LTC4252-2CMSTR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers |
| LTC4252-2CMSTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers |
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