LTC4214-2 Negative Voltage Hot Swap Controllers

The LTC®4214 negative voltage Hot Swap™ 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 disconnect the load whenever the input supply exceeds the desired operating range. The LTC4214 controls negative supplies ranging from near zero to –16V. A multifunction timer delays initial start-up and controls the circuit breaker’s response time. This 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. A power good status output can enable a power module at start-up or disable it if the circuit breaker trips.

The LTC4214-1 latches off after a circuit breaker fault times out. The LTC4214-2 provides automatic retry after a fault. The LTC4214 is available in the 10-pin MSOP package

产品特点 Features

Allows Safe Board Insertion and Removal from a Live Backplane
Controls Supplies from 0V to –16V
Adjustable Analog Current Limit With Circuit Breaker Timer
Fast Response Time Limits Peak Fault Current
Adjustable Soft-Start Current Limit
Adjustable Timer with Drain Voltage Accelerated Response
Adjustable Undervoltage/Overvoltage Protection
LTC4214-1: Latch Off After Fault
LTC4214-2: Automatic Retry After Fault
Available in the 10-Pin MSOP Package

参数

应用

Hot Board Insertion
Electronic Circuit Breaker
Negative Power Supply Control
Central Office Switching
High Availability Servers
Disk Arrays
Optical Networking/Switching
ECL

典型应用图

LTC4214-2 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LTC4214-1CMS	MSOP	10	C	$3.30	$2.35
LTC4214-1CMS#PBF	MSOP	10	C	$3.30	$2.35
LTC4214-1CMS#TR	MSOP	10	C		$2.41
LTC4214-1CMS#TRPBF	MSOP	10	C		$2.41
LTC4214-1IMS	MSOP	10	I	$3.75	$2.65
LTC4214-1IMS#PBF	MSOP	10	I	$3.75	$2.65
LTC4214-1IMS#TR	MSOP	10	I		$2.71
LTC4214-1IMS#TRPBF	MSOP	10	I		$2.71
LTC4214-2CMS	MSOP	10	C	$3.30	$2.35
LTC4214-2CMS#PBF	MSOP	10	C	$3.30	$2.35
LTC4214-2CMS#TR	MSOP	10	C		$2.41
LTC4214-2CMS#TRPBF	MSOP	10	C		$2.41
LTC4214-2IMS	MSOP	10	I	$3.75	$2.65
LTC4214-2IMS#PBF	MSOP	10	I	$3.75	$2.65
LTC4214-2IMS#TR	MSOP	10	I		$2.71
LTC4214-2IMS#TRPBF	MSOP	10	I		$2.71

LTC4214-2 数据手册及相关资料下载

数据手册(英文) : LTC4214-1/LTC4214-2 - Negative Voltage Hot Swap Controllers.PDF
设计要点 (中文) : DN402 - 小型 DFN 封装的电子电路断路器免除了检测电阻器.PDF
可靠性数据 : R421 Reliability Data .PDF
产品选型卡 : Low Voltage Hot Swap Controllers.PDF