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LM3409-Q1 - P-FET Buck Controller

Download the LM3409-Q1 datasheet PDF. This datasheet also covers the LM3409 variant, as both devices belong to the same p-fet buck controller family and are provided as variant models within a single manufacturer datasheet.

General Description

The LM3409, LM3409-Q1, LM3409HV, and LM3409HV-Q1 are P-channel MOSFET (PFET) controllers for step-down (buck) current regulators.

Key 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 Capac.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM3409-etcTI.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LM3409 PFET Buck Controller National Semiconductor
LM3409HV PFET Buck Controller National Semiconductor
LM3409Q PFET Buck Controller National Semiconductor
LM3409QHV PFET Buck Controller National Semiconductor
LM340 Three Terminal Positive Voltage Regulators Motorola Inc

Other Datasheets by Texas Instruments

Part Number Description
LM3409 P-FET Buck Controller
LM3409HV P-FET Buck Controller
LM3409HV-Q1 P-FET Buck Controller
LM340 1.5-A Fixed Voltage Regulators
LM340-N 3-Terminal Positive Regulators

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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-Pi