Product details

Vin (Min) (V) 3.1 Vin (Max) (V) 75 Vout (Min) (V) 1.26 Vout (Max) (V) 75 Switch current limit (Typ) (A) 0.5 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 50 Switching frequency (Max) (kHz) 1500 Iq (Typ) (mA) 3.1 Features Enable, Frequency Synchronization Duty cycle (Max) (%) 85 Operating temperature range (C) -40 to 125 Rating Catalog
Vin (Min) (V) 3.1 Vin (Max) (V) 75 Vout (Min) (V) 1.26 Vout (Max) (V) 75 Switch current limit (Typ) (A) 0.5 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 50 Switching frequency (Max) (kHz) 1500 Iq (Typ) (mA) 3.1 Features Enable, Frequency Synchronization Duty cycle (Max) (%) 85 Operating temperature range (C) -40 to 125 Rating Catalog
SOIC (D) 8 19 mm² 4.9 x 3.9 WSON (NGT) 8 16 mm² 4 x 4
  • Integrated 75-V N-channel MOSFET
  • Ultra-wide input voltage range from 3.1 V to 75 V
  • Integrated high voltage bias regulator
  • Adjustable output voltage
  • 1.5% output voltage accuracy
  • Current mode control with selectable compensation
  • Wide bandwidth error amplifier
  • Integrated current sensing and limiting
  • Integrated slope compensation
  • 85% maximum duty cycle limit
  • Single resistor oscillator programming
  • Oscillator synchronization capability
  • Enable and undervoltage lockout (UVLO) pin
  • 8-pin SOIC package
  • 8-pin WSON package
  • Thermal shutdown with hysteresis
  • Integrated 75-V N-channel MOSFET
  • Ultra-wide input voltage range from 3.1 V to 75 V
  • Integrated high voltage bias regulator
  • Adjustable output voltage
  • 1.5% output voltage accuracy
  • Current mode control with selectable compensation
  • Wide bandwidth error amplifier
  • Integrated current sensing and limiting
  • Integrated slope compensation
  • 85% maximum duty cycle limit
  • Single resistor oscillator programming
  • Oscillator synchronization capability
  • Enable and undervoltage lockout (UVLO) pin
  • 8-pin SOIC package
  • 8-pin WSON package
  • Thermal shutdown with hysteresis

The LM5002 high voltage switch mode regulator features all of the functions necessary to implement efficient high voltage boost, flyback, SEPIC and forward converters, using few external components. This easy to use regulator integrates a 75-V N-Channel MOSFET with a 0.5-A peak current limit. Current mode control provides inherently simple loop compensation and line-voltage feed-forward for superior rejection of input transients. The switching frequency is set with a single resistor and is programmable up to 1.5 MHz. The oscillator can also be synchronized to an external clock. Additional protection features include: current limit, thermal shutdown, undervoltage lockout and remote shutdown capability. The device is available in both 8-pin SOIC and 8-pin WSON packages. To create a custom regulator design, use the LM5002 with WEBENCH® Power Designer.

The LM5002 high voltage switch mode regulator features all of the functions necessary to implement efficient high voltage boost, flyback, SEPIC and forward converters, using few external components. This easy to use regulator integrates a 75-V N-Channel MOSFET with a 0.5-A peak current limit. Current mode control provides inherently simple loop compensation and line-voltage feed-forward for superior rejection of input transients. The switching frequency is set with a single resistor and is programmable up to 1.5 MHz. The oscillator can also be synchronized to an external clock. Additional protection features include: current limit, thermal shutdown, undervoltage lockout and remote shutdown capability. The device is available in both 8-pin SOIC and 8-pin WSON packages. To create a custom regulator design, use the LM5002 with WEBENCH® Power Designer.

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Technical documentation

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Type Title Date
* Data sheet LM5002 Wide Input Voltage Switch Mode Regulator datasheet (Rev. F) 06 May 2021
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
White paper Wide VIN power management ICs simplify white paper (Rev. A) 19 Sep 2013
User guide AN-1736 LM3433 HB LED Driver Evaluation Kit (Rev. C) 03 May 2013
EVM User's guide AN-1793 LM3433 4A to 20A LED Driver Evaluation Board (Rev. B) 03 May 2013
EVM User's guide AN-1937 LM3433 10A to 40A LED Driver Evaluation Board (Rev. D) 03 May 2013
User guide AN-2041 LM3434 20A Evaluation Board (Rev. B) 03 May 2013
User guide Small Split Rail Isolated + - 5V Power Supply Generator User Guide 27 Jan 2012

Design & development

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

Simulation model

LM5002 PSpice Transient Model

SNVM392.ZIP (247 KB) - PSpice Model
Simulation model

LM5002 TINA-TI STARTUP Reference Design

SNVM530.TSC (450 KB) - TINA-TI Reference Design
Simulation model

LM5002 TINA-TI LOAD Transient Reference Design

SNVM531.TSC (421 KB) - TINA-TI Reference Design
Simulation model

LM5002 TINA-TI Transient Spice Model

SNVM532.ZIP (18 KB) - TINA-TI Spice Model
Simulation model

LM5002 Unencrypted PSpice Transient Model

SNVM952.ZIP (3 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Calculation tool

FLYBUCK-FLYBACK-DESIGN-CALC — Fly-Buck and Flyback Topology Selector

This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.
Reference designs

TIDA-03031 — Input Protection and Backup Supply Reference Design for 25W PLC Controller Unit

The TIDA-03031 reference design provides a solution for input power path protection and backup supply design in a typical PLC controller unit. It replaces traditionally used discrete-circuit implementations with fully integrated protection circuits.
Reference designs

TIDA-00782 — Portable, High Brightness HD Projection Display Reference Design using DLP® Technology

This reference design, featuring the DLP Pico™ 0.45-inch WXGA display chipset enables use of HD resolution for projection display applications such as accessory projectors, smart projectors, mobile Smart TV, built in projectors like projection functionality inside notebooks, laptops and hot (...)
Package Pins Download
SOIC (D) 8 View options
WSON (NGT) 8 View options

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