LTC1728-3.3 Micropower Precision Triple Supply Monitors in 8-Lead MSOP and 5-Lead SOT-23 Packages

The LTC™1727 is a triple supply monitor intended for systems with multiple supply voltages. Each supply monitor has its own open-drain output for individual supply monitoring. A common open-drain reset output remains low until all three supplies have been in compliance for 200ms. Tight 1.5% accuracy specifications and glitch immunity ensure reliable reset operation without false triggering.

The LTC1728 is functionally identical to the LTC1727 without the individual monitor outputs.

The RST output is guaranteed to be in the correct state for VCC5/VCC25/VCC18 or VCC3 down to 1V. The LTC1727/LTC1728 may also be configured to monitor any one or two VCC inputs instead of three, depending on system requirements.

Very low (10µA typical) supply current makes the LTC1727/LTC1728 ideal for power conscious systems.

The LTC1727 is available in an 8-lead MSOP or SO package and the LTC1728 is available in a 5-lead SOT-23 package

产品特点 Features

Monitors Three Inputs Simultaneously
LTC1727-5: 5V, 3.3V
and ADJ
LTC1727-2.5: 2.5V, 3.3V
and ADJ
LTC1728-5: 5V,
±1.5% Threshold Accuracy Over Temperature
Very Low Supply Current: 10µA Typ
200ms Reset Time Delay
Active Low RESET Output
Power Supply Glitch Immunity
Guaranteed RESET for
VCC3 >/= 1V or
VCC5/VCC25/VCC18 >/= 1V
LTC1727 Includes Monitor Output for Each Supply
LTC1727: 8-Lead MSOP and SO Packages
LTC1728: 5-Lead SOT-23 Package

应用

Desktop Computers
Notebook Computers
Intelligent Instruments
Portable Battery-Powered Equipment
Network Servers

典型应用图

参数

LTC1728-3.3 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) *
LTC1728ES5-1.8	SOT	5	E	$1.66
LTC1728ES5-1.8#PBF	SOT	5	E	$1.66
LTC1728ES5-1.8#TR	SOT	5	E	$1.66	$1.40
LTC1728ES5-1.8#TRM	SOT	5	E	$1.66	$1.42
LTC1728ES5-1.8#TRMPBF	SOT	5	E	$1.66	$1.42
LTC1728ES5-1.8#TRPBF	SOT	5	E	$1.66	$1.40
LTC1728ES5-2.5	SOT	5	E	$1.66
LTC1728ES5-2.5#PBF	SOT	5	E	$1.66
LTC1728ES5-2.5#TR	SOT	5	E	$1.66	$1.40
LTC1728ES5-2.5#TRM	SOT	5	E	$1.66	$1.42
LTC1728ES5-2.5#TRMPBF	SOT	5	E	$1.66	$1.42
LTC1728ES5-2.5#TRPBF	SOT	5	E	$1.66	$1.40
LTC1728ES5-3.3	SOT	5	E	$1.66
LTC1728ES5-3.3#PBF	SOT	5	E	$1.66
LTC1728ES5-3.3#TR	SOT	5	E	$1.66	$1.40
LTC1728ES5-3.3#TRM	SOT	5	E	$1.66	$1.42
LTC1728ES5-3.3#TRMPBF	SOT	5	E	$1.66	$1.42
LTC1728ES5-3.3#TRPBF	SOT	5	E	$1.66	$1.40
LTC1728ES5-5	SOT	5	E	$1.66
LTC1728ES5-5#PBF	SOT	5	E	$1.66
LTC1728ES5-5#TR	SOT	5	E	$1.66	$1.40
LTC1728ES5-5#TRM	SOT	5	E	$1.66	$1.42
LTC1728ES5-5#TRMPBF	SOT	5	E	$1.66	$1.42
LTC1728ES5-5#TRPBF	SOT	5	E	$1.66	$1.40
LTC1728HS5-5#PBF	SOT	5	H	$2.42
LTC1728HS5-5#TRMPBF	SOT	5	H	$2.42	$1.75
LTC1728HS5-5#TRPBF	SOT	5	H	$2.48	$1.70

LTC1728-3.3 数据手册及相关资料下载

数据手册(英文) : LTC1727/LTC1728 - Micropower Precision Triple Supply Monitors in 8-Lead MSOP and 5-Lead SOT-23 Packages.PDF
可靠性数据 : R413 Reliability Data .PDF
产品选型卡 : High Voltage Surge Stoppers.PDF
产品选型卡 : Voltage Monitors & Supervisors Quick Guide.PDF