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LM3406 Datasheet PDF

Part Series:LM3406 Series
Description:1.5A Constant Current Buck Regulator for Driving High Power LEDs
Document:LM3406MHX/NOPB Datasheet PDF (39 Pages)

LM3406 Datasheet PDF

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LM3406 - TI Specifications

TYPE
DESCRIPTION
Case/Package
HTSSOP-14
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LM3406 - TI Function Overview

The LM3406 family are monolithic switching regulators designed to deliver constant currents to high power LEDs. Ideal for automotive, industrial, and general lighting applications, they contain a high-side N-channel MOSFET switch with a current limit of 2.0A (typical) for step-down (Buck) regulators. Controlled on-time with true average current and an external current sense resistor allow the converter output voltage to adjust as needed to deliver a constant current to series and series-parallel connected LED arrays of varying number and type. LED dimming via pulse width modulation (PWM) is achieved using a dedicated logic pin or by PWM of the power input voltage. The product feature set is rounded out with low-power shutdown and thermal shutdown protection.
LM3406HV-Q1
Automotive Grade Device
AEC-Q100 Grade 1 Qualified
Operating Ambient Temperature: –40°C to 125°C
Integrated 2.0A MOSFET
VIN Range 6V to 42V (LM3406)
VIN Range 6V to 75V (LM3406HV)
VIN Range 6V to 75V (LM3406HV-Q1)
True Average Output Current Control
1.7A Minimum Output Current Limit Over Temperature
Cycle-by-Cycle Current Limit
PWM Dimming with Dedicated Logic Input
PWM Dimming with Power Input Voltage
Simple Control Loop Compensation
Low Power Shutdown
Supports All-Ceramic Output Capacitors and Capacitor-less Outputs
Thermal Shutdown Protection
TSSOP-14 Package
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