LTC4412HV 36V, Low Loss PowerPath™ Controller in ThinSOT

The LTC®4412HV controls an external P-channel MOSFET to create a near ideal diode function for power switchover or load sharing. This permits highly efficient OR’ing of multiple power sources for extended battery life and low selfheating. When conducting, the voltage drop across the MOSFET is typically 20mV. For applications with a wall adapter or other auxiliary power source, the load is automatically disconnected from the battery when the auxiliary source is connected. Two or more LTC4412HVs may be interconnected to allow load sharing between multiple batteries or charging of multiple batteries from a single charger. The LTC4412HV is an extended supply and temperature range version of the LTC4412.

The wide supply operating range supports operation from one to eight Li-Ion cells in series. The low quiescent current (11µA typical) is independent of the load current. The gate driver includes an internal voltage clamp for MOSFET protection.

The STAT pin can be used to enable an auxiliary P-channel MOSFET power switch when an auxiliary supply is detected. This pin may also be used to indicate to a microcontroller that an auxiliary supply is connected. The control (CTL) input enables the user to force the primary MOSFET off and the STAT pin low.

The LTC4412HV is available in a low profile (1mm) SOT-23 package

产品特点 Features

Very Low Loss Replacement for Power Supply OR’ing Diodes
3V to 36V AC/DC Adapter Voltage Range
–40°C to 125°C Operating Temperature Range
Minimal External Components
Automatic Switching Between DC Sources
Simplifies Load Sharing with Multiple Batteries
Low Quiescent Current: 11µA
2.5V to 36V Battery Voltage Range
Reverse Battery Protection
Drives Almost Any Size MOSFET for Wide Range of Current Requirements
MOSFET Gate Protection Clamp
Manual Control Input
Low Profile (1mm) SOT-23 (ThinSOT™) Package

应用

Industrial and Automotive Applications
Notebook and Handheld Computers
USB-Powered Peripherals
Uninterruptable Power Supplies
Logic Controlled Power Switch

典型应用图

参数

LTC4412HV 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) *
LTC4412ES6	SOT	6	E	$1.93
LTC4412ES6#PBF	SOT	6	E	$1.93
LTC4412ES6#TR	SOT	6	E	$1.93	$1.36
LTC4412ES6#TRM	SOT	6	E	$1.93	$1.38
LTC4412ES6#TRMPBF	SOT	6	E	$1.93	$1.38
LTC4412ES6#TRPBF	SOT	6	E	$1.93	$1.36
LTC4412HVIS6	SOT	6	I	$2.50
LTC4412HVIS6#PBF	SOT	6	I	$2.50
LTC4412HVIS6#TR	SOT	6	I	$2.50	$1.76
LTC4412HVIS6#TRM	SOT	6	I	$2.50	$1.78
LTC4412HVIS6#TRMPBF	SOT	6	I	$2.50	$1.78
LTC4412HVIS6#TRPBF	SOT	6	I	$2.50	$1.76
LTC4412IS6#PBF	SOT	6	I	$2.09
LTC4412IS6#TRMPBF	SOT	6	I	$2.09	$1.51
LTC4412IS6#TRPBF	SOT	6	I	$2.09	$1.46

LTC4412HV 数据手册及相关资料下载

数据手册(英文) : LTC4412HV - 36V, Low Loss PowerPath Controller in ThinSOT.PDF
应用指南 (英文) : AN107 - Extending the Input Voltage Range of PowerPath Circuits for Automotive and Industrial Applications.PDF
设计要点 (英文) : DN1003 - Ideal Diode Controller Eliminates Energy Wasting Diodes in Power OR-ing Applications.PDF
设计要点 (中文) : DN1012 - 通过提升性能来缩减太阳能电池板的尺寸.PDF
设计要点 (中文) : DN386 - 理想二极管控制器在电源“或”应用中免除了耗能的二极管.PDF
设计要点 (中文) : DN450 - 对于电源故障保护应用，超级电容器能够替代后备电池.PDF
设计要点 (中文) : DN487 - 基于超级电容的后备电源可防止 RAID 系统中的数据丢失.PDF
可靠性数据 : R384 Reliability Data .PDF
产品选型卡 : PowerPath Controllers, Ideal Diodes.PDF