LTC1646 CompactPCI Dual Hot Swap Controller

The LTC®1646 is a hot swap controller that allows a board to be safely inserted and removed from a live CompactPCI bus slot. Two external N-Channel transistors control the 3.3V and 5V supplies. The supplies can be ramped-up in current limit or at a programmable rate. Electronic circuit breakers protect both supplies against overcurrent fault conditions. The PWRGD output indicates when all of the supply voltages are within tolerance. The OFF/ON pin is used to cycle the board power or reset the circuit breaker. The PRECHARGE output can be used to bias the bus I/O pins during card insertion and extraction. PCI_RST# is logically combined on-chip with HEALTHY# in order to generate LOCAL_PCI_RST# which can be used to reset the CPCI card logic if either of the supply voltages is not within tolerance.

The LTC1646 is available in the 16-pin narrow SSOP package

产品特点 Features

Allows Safe Board Insertion and Removal from a Live, CompactPCI™ Bus
Controls 3.3V and/or 5V Supplies
Programmable Foldback Current Limit During Power-Up
Dual Level Circuit Breakers Protect Supplies from Overcurrent and Short-Circuit Faults
Local_PCI_RST# Logic On-Chip
PRECHARGE Output Biases I/O Pins During Card Insertion and Extraction
User Programmable Supply Voltage Power-Up Rate
15V High Side Drive for External N-Channels
PWRGD, RESETOUT and FAULT Outputs

应用

CompactPCI Bus Removable Boards

典型应用图

参数

LTC1646 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) *
LTC1646CGN	SSOP	16	C	$4.65	$3.40
LTC1646CGN#PBF	SSOP	16	C	$4.65	$3.40
LTC1646CGN#TR	SSOP	16	C		$3.46
LTC1646CGN#TRPBF	SSOP	16	C		$3.46
LTC1646IGN	SSOP	16	I	$5.35	$3.90
LTC1646IGN#PBF	SSOP	16	I	$5.35	$3.90
LTC1646IGN#TR	SSOP	16	I		$3.96
LTC1646IGN#TRPBF	SSOP	16	I		$3.96

LTC1646 数据手册及相关资料下载

数据手册(英文) : LTC1646 - CompactPCI Dual Hot Swap Controller.PDF
设计要点 (中文) : DN253 LTC1646: Power Supply Isolation Controller Simplifies Hot Swapping the CompactPCI Bus for 5V-/3.3V-Only Applications.PDF
可靠性数据 : R318 Reliability Data .PDF
产品选型卡 : Low Voltage Hot Swap Controllers.PDF