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Product details

Parameters

Vin (Min) (V) 6 Vin (Max) (V) 75 Iout (Max) (A) 5 Vout (Min) (V) 1.24 Vout (Max) (V) 75 Regulated outputs (#) 1 Topology Buck Dimming method Analog, PWM Power factor correction (Min) Operating temperature range (C) -40 to 125 Switching frequency (Min) (kHz) 50 Switching frequency (Max) (kHz) 2000 Iq (Typ) (mA) 2 Vref (V) 0.248 open-in-new Find other General lighting LED drivers

Package | Pins | Size

HVSSOP (DGQ) 10 15 mm² 3 x 4.9 open-in-new Find other General lighting LED drivers

Features

  • 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
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Description

The LM3409, LM3409-Q1, LM3409HV, and LM3409HV-Q1 are P-channel MOSFET (PFET) controllersfor step-down (buck) current regulators. They offer wide input voltage range, high-sidedifferential current sense with low adjustable threshold voltage and fast output enable/disablefunction 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 currentsup to 5 A are easily achievable.

The LM3409 devices use constant off-time (COFT) control to regulate an accurate constantcurrent without the need for external control loop compensation. Analog and PWM dimming are easy toimplement 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.

For all available packages, see the orderable addendum at the end of the data sheet.
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TPS92515HV ACTIVE 65-V 2-A LED driver with Integrated NFET, high-side current Sense, and Shunt PWM dimming Capable This product is an integrated NFET controlled off-time buck LED driver. It supports output current up to 2 A. Input voltage up to 65 V.

Technical documentation

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Type Title Date
* Datasheet LM3409, -Q1, LM3409HV, -Q1 P-FET Buck Controller for High-Power LED Drivers datasheet (Rev. L) May 23, 2016
Technical articles Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical articles LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016
Technical articles Take better selfies with innovative LED flashes Nov. 18, 2014
Technical articles Solving the automotive EMI issues in new cars with all the screens Sep. 10, 2014
Application notes AN-1656 Design Challenges of Switching LED Drivers (Rev. A) May 03, 2013
User guides AN-2150 LM3450A Evaluation Board (Rev. B) May 03, 2013
User guides AN-1953 LM3409HV Evaluation Board (Rev. D) May 01, 2013
User guides AN-1954 LM3409 Demonstration Board (Rev. D) May 01, 2013
Application notes AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) Apr. 23, 2013
User guides LM3409HV MR16 Buck-Boost Reference Design User Guide Jan. 27, 2012

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
79
Description

This evaluation board showcases the LM3409HV PFET controller for a buck current regulator. It is designed to drive 12 LEDs (VO = 42V) at a maximum average LED current (ILED = 1.5A) from a DC input voltage (VIN = 48V). The switching frequency (fSW = 400 kHz) is targeted for the nominal operating (...)

EVALUATION BOARDS Download
document-generic User guide
175
Description
The TPS2372-3EVM-757 evaluation module contains design and reference circuitry for the TPS2372, which is a IEEE802.3bt Type 3 PoE PD controller suitable for high power PoE PD Lighting applications.

In need of an IEEE802.3bt-ready PSE controller? Check out the TPS23881.
Features
  • IEEE802.3bt compliant PoE PD
  • Automatic MPS
  • Inrush Delay
  • AutoClass
EVALUATION BOARDS Download
document-generic User guide
149
Description
The TPS2372 evaluation module (TPS2372-4EVM-006) contains evaluation and reference circuitry for the TPS2372, which is a IEEE802.3bt PoE PD controller suitable for high power PoE PD applications such as LED lighting and modules.

In need of an IEEE802.3bt-ready PSE controller? Check out the TPS23880 (...)
Features
  • IEEE802.3bt compliant PoE PD
  • Automatic MPS
  • Inrush Delay
  • AutoClass

Design tools & simulation

SIMULATION MODELS Download
SNVM350.ZIP (69 KB) - PSpice Model
SIMULATION MODELS Download
SNVM420.ZIP (14 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNVM421.TSC (580 KB) - TINA-TI Reference Design
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
Connected LED Lighting With IEEE802.3bt Power Over Ethernet (PoE) Reference Design
TIDA-01463 — This Power over Ethernet (PoE) reference design supplies power and data over a single Ethernet cable to a connected LED lighting ballast. This reference design uses TI's TPS2372-4 PoE powered device (PD) interface, LM3409 buck controller, LM5165 buck converter, TPS62740 buck converter, TM4C1292NCPDT (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
HVSSOP (DGQ) 10 View options

Ordering & quality

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