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LM3409HV - PFET Buck Controller

Download the LM3409HV datasheet PDF. This datasheet also covers the LM3409 variant, as both devices belong to the same pfet buck controller family and are provided as variant models within a single manufacturer datasheet.

Description

The LM3409/09HV 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, fast output enable/disable function and a thermally enhanced eMSOP-10 package.

Features

  • combine to make the LM3409/09HV ideal for use as constant current sources for driving LEDs where forward currents up to 5A are easily achievable. The LM3409/09HV uses 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 t.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM3409_NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LM3409HV P-FET Buck Controller Texas Instruments
LM3409HV-Q1 P-FET Buck Controller Texas Instruments
LM3409 P-FET Buck Controller Texas Instruments
LM3409-Q1 P-FET Buck Controller Texas Instruments
LM340 Three Terminal Positive Voltage Regulators Motorola Inc

Other Datasheets by National Semiconductor (Texas Instruments)

Part Number Description
LM3409 PFET Buck Controller
LM3409Q PFET Buck Controller
LM3409QHV PFET Buck Controller
LM340 3-Terminal Positive Regulators
LM3401 Quad Amplifiers

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
LM3409 / LM3409HV PFET Buck Controller for High Power LED Drives www.DataSheet4U.com LM3409 LM3409HV June 12, 2009 PFET Buck Controller for High Power LED Drives General Description The LM3409/09HV 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, fast output enable/disable function and a thermally enhanced eMSOP-10 package. These features combine to make the LM3409/09HV ideal for use as constant current sources for driving LEDs where forward currents up to 5A are easily achievable. The LM3409/09HV uses Constant Off-Time (COFT) control to regulate an accurate constant current without the need for external control loop compensation.
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