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LTC4412HV

Linear Technology
Part Number LTC4412HV
Manufacturer Linear Technology
Description Low Loss PowerPath Controller
Published Mar 18, 2010
Detailed Description FEATURES ■ Very Low Loss Replacement for Power Supply OR’ing Diodes ■ 3V to 36V AC/DC Adapter Voltage Range ■ –40°C to 1...
Datasheet PDF File LTC4412HV PDF File

LTC4412HV
LTC4412HV

Overview
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 (ThinSOTTM) Package ■ AEC-Q100 Qualified for Automotive Applications APPLICATIONS ■ Industrial and Automotive Applications ■ Notebook and Handheld Computers ■ USB-Powered Peripherals ■ Uninterruptable Power Supplies ■ Logic Controlled Power Switch All registered trademarks and trademarks are the property of their respective owners.
LTC4412HV 36V, Low Loss PowerPathTM Controller in ThinSOT DESCRIPTION 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 self- heating.
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.
Thi...


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