LTC4241 PCI-Bus with 3.3V Auxiliary Hot Swap Controller

The LTC®4241 is a Hot Swap controller that allows a board to be safely inserted and removed from a live PCI-bus slot. It has a primary controller that controls the four PCI supplies and an independent auxiliary controller to controlthe 3.3V auxiliary supply. External N-channel transistors are used to control the 3.3V, 5V and 3.3V auxiliary supplies while on-chip switches control the –12V and 12V supplies. The 3.3V, 5V and 3.3V auxiliary supplies can be ramped upat an adjustable rate. Electronic circuit breakers protect all five supplies against overcurrent faults. The foldback current limit feature reduces current spikes and power dissipation when shorts occur. The PWRGD output of the primary controller indicates when all four PCI supplies are within tolerance. The FAULT output indicates an overcurrent condition for any of the five supplies.

The LTC4241 is available in the 20-pin narrow SSOP package

产品特点 Features

Allows Safe Board Insertion and Removal from a Live PCI Slot
Controls 3.3V, 5V, –12V, 12V and 3.3V Auxiliary Supplies
Independent 3.3V Auxiliary Supply Hot Swap™ Controller
Adjustable Foldback Current Limit with Circuit Breaker
Adjustable Supply Voltage Power-Up Rate
High Side Drive for External N-Channel FETs
–12V and 12V On-Chip Switches
Fault and Power Good Outputs

参数

应用

PCI-Based Servers
Computer Systems

典型应用图

LTC4241 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) *
LTC4241CGN	SSOP	20	C	$2.15	$1.75
LTC4241CGN#PBF	SSOP	20	C	$2.15	$1.75
LTC4241CGN#TR	SSOP	20	C		$1.81
LTC4241CGN#TRPBF	SSOP	20	C		$1.81
LTC4241IGN	SSOP	20	I	$2.55	$2.05
LTC4241IGN#PBF	SSOP	20	I	$2.55	$2.05
LTC4241IGN#TR	SSOP	20	I		$2.11
LTC4241IGN#TRPBF	SSOP	20	I		$2.11

LTC4241 数据手册及相关资料下载

数据手册(英文) : LTC4241 - PCI-Bus with 3.3V Auxiliary Hot Swap Controller.PDF
可靠性数据 : R427 Reliability Data .PDF
产品选型卡 : Low Voltage Hot Swap Controllers.PDF