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LM3401 Datasheet PDF

Part Series:LM3401 Series
Description:Hysteretic PFET Controller for High Power LED Drive
Document:LM3401MM/NOPB Datasheet PDF (27 Pages)

LM3401 Datasheet PDF

27 Pages
TI
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27 Pages
TI
LED DRVR 1Segment 5V/9V/12V/15V/18V/24V 8Pin VSSOP T/R
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Hysteretic PFET Controller for High Power LED Drive
20 Pages
National Semiconductor
Hysteretic PFET Controller for High Power LED Drive

LM3401 - TI Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Case/Package
VSSOP-8
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LM3401 - TI Function Overview

The LM3401 is a switching controller designed to provide constant current to high power LEDs. The LM3401 drives an external P-MOSFET switch for step-down (Buck) regulators. The LM3401 delivers constant current within ±6% accuracy to a wide variety and number of series connected LEDs. Output current is adjusted with an external current sensing resistor to drive high power LEDs in excess of 1A.
For improved accuracy and efficiency, the LM3401 features dual-side hysteresis, very low reference voltage, and short propagation delay. A cycle by cycle current limit provides protection against over current and short circuit failures. Additional features include adjustable hysteresis and a CMOS compatible input pin for PWM dimming.
Hysteretic Control for Speed and Simplicity
Input Operating Range of 4.5V-35V
1.5MHz Maximum Switching Frequency
Low 200mV Reference Voltage
Programmable Current Limit
High speed CMOS Compatible Enable/Dimming
Adjustable Hysteresis
Input UVLO
No output Capacitor Required
8-pin VSSOP Package
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