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LM3409HV

Texas Instruments
Part Number LM3409HV
Manufacturer Texas Instruments
Description P-FET Buck Controller
Published Oct 1, 2019
Detailed Description Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design LM3409, LM34...
Datasheet PDF File LM3409HV PDF File

LM3409HV
LM3409HV

Overview
Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design LM3409, LM3409-Q1, LM3409HV, LM3409HV-Q1 SNVS602L – MARCH 2009 – REVISED JUNE 2016 LM3409, -Q1, LM3409HV, -Q1 P-FET Buck Controller for High-Power LED Drivers 1 Features •1 LM3409-Q1 and LM3409HV-Q1 are Automotive Grade Products: AEC-Q100 Grade 1 Qualified • 2-Ω, 1-A Peak MOSFET Gate Drive • VIN Range: 6 V to 42 V (LM3409, LM3409-Q1) • VIN Range: 6 V to 75 V (LM3409HV, LM3409HV- Q1) • Differential, High-Side Current Sense • Cycle-by-Cycle Current Limit • No Control Loop Compensation Required • 10,000:1 PWM Dimming Range • 250:1 Analog Dimming Range • Supports All-Ceramic Output Capacitors and Capacitor-less Outputs • Low-Power Shutdown and Thermal Shutdown • Thermally Enhanced 10-Pin, HVSSOP Package 2 Applications • LED Driver • Constant Current Source • Automotive Lighting • General Illumination 3 Description The LM3409, LM3409-Q1, LM3409HV, and LM3409HV-Q1 are P-channel MOSFET (PFET) controllers for step-down (buck) current regulators.
They offer wide input voltage range, high-side differential current sense with low adjustable threshold voltage and fast output enable/disable function and a thermally enhanced 10-pin, HVSSOP package.
These features combine to make the LM3409 family of devices ideal for use as constant current sources for driving LEDs where forward currents up to 5 A are easily achievable.
The LM3409 devices use constant off-time (COFT) control to regulate an accurate constant current without the need for external control loop compensation.
Analog and PWM dimming are easy to implement and result in a highly linear dimming range with excellent achievable contrast ratios.
Programmable UVLO, low-power shutdown, and thermal shutdown complete the feature set.
Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM3409 HVSSOP (10) PDIP (14) 3.
00 mm × 3.
00 mm 19.
177 mm × 6.
35 mm LM3409-Q1 LM3409HV HVSSOP (10) 3.
00 mm × 3.
00 mm LM34...


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