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LM5001

ACTIVE

3.1-75V Wide Vin, 1A Current Mode Non-Synchronous Switch Mode Regulator

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LM51581 ACTIVE 1.5-A, 85-V, 2.2-MHz wide VIN boost, flyback, & SEPIC converter with dual random spread spectrum Newer device with higher Vout capability and higher switch current

Product details

Rating Catalog Topology Boost, Flyback, Forward, SEPIC Vin (max) (V) 75 Vin (min) (V) 3.1 Vout (max) (V) 75 Vout (min) (V) 1.26 Switch current limit (typ) (A) 1 Features Enable, Frequency synchronization, Nonsynchronous rectification, UVLO adjustable Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0031 Duty cycle (max) (%) 85
Rating Catalog Topology Boost, Flyback, Forward, SEPIC Vin (max) (V) 75 Vin (min) (V) 3.1 Vout (max) (V) 75 Vout (min) (V) 1.26 Switch current limit (typ) (A) 1 Features Enable, Frequency synchronization, Nonsynchronous rectification, UVLO adjustable Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0031 Duty cycle (max) (%) 85
WSON (NGT) 8 16 mm² (4 mm × 4 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • AEC-Q100 Qualified (TJ = –40°C to 125°C)
  • 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 / Undervoltage Lockout (UVLO) Pin
  • Thermal Shutdown
  • AEC-Q100 Qualified (TJ = –40°C to 125°C)
  • 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 / Undervoltage Lockout (UVLO) Pin
  • Thermal Shutdown

The LM5001 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 1-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 LM5001 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 1-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.

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Technical documentation

Design & development

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Evaluation board

LM5001BSTEVAL — LM5001BSTEVAL - Wide Vin Switch Mode Regulator Evaluation Module

The LM5001 boost evaluation board is designed to provide the design engineer with a fully functional power converter based on the boost topology to evaluate the LM5001 high voltage switch mode regulator. The performance of the evaluation board is as follows:

User guide: PDF
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Evaluation board

LM5001ISOEVAL — Wide Vin Switch Mode Regulator Evaluation Module

LM5001 High Voltage Switch Mode Regulator

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Evaluation board

LM5001NISOEVAL — LM5001 Wide Vin Non-Isolated Flyback Evaluation Board

The LM5001 non-isolated flyback evaluation board is designed to provide the design engineer with a fully functional non-isolated flyback power converter based on Current Mode Control to evaluate the LM5001 switching regulator IC. The evaluation board provides a 5V output with 1A current capability. (...)

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Simulation model

LM5001 PSpice Transient Model

SNVM540.ZIP (67 KB) - PSpice model
Supported products & hardware
Simulation model

LM5001 TINA-TI Transient Reference Design

SNVM550.TSC (1083 KB) - TINA-TI reference design
Supported products & hardware
Simulation model

LM5001 TINA-TI Transient Spice Model

SNVM551.ZIP (18 KB) - TINA-TI Spice model
Supported products & hardware
Simulation model

LM5001 Unencrypted PSpice Transient Model

SNVM921.ZIP (3 KB) - PSpice model
Supported products & hardware
Calculation tool

FLYBUCK-FLYBACK-DESIGN-CALC — Flybuck / Flyback Calculator

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.

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Reference design

PMP30373 — Small Negative Bias Supply for Low Noise Applications Reference Design

This circuit reference design is realized in Cuk Topology. The output voltage is -12V / -15V. The output current of 200mA is possible over an input voltage range of 10V to 60V  (even with a low input voltage of 6V 140mA output current is possible).  The perfect switching behavior of the (...)
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TIDA-00500 is a reference design to provide power to load for short duration of time after a power interrupt has occurred. Traditionally Programmable Logic Controllers (PLCs) are equipped with a recharge battery source for alternative power. This battery source often suffers from drawbacks like (...)

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TIDA-01214 — Isolated, High-Accuracy Analog Input Module Reference Design Using 16-Bit ADC and Digital Isolator

This reference design provides accurate measurements of AC voltage and current inputs using a precision 16-bit SAR ADC over a wide input range, covering protection and measurement range (including sampling requirements of IEC 61850-9-2), simplifying system design and improving trip time (...)
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Reference design

TIDA-01498 — 4W PLC Power Supply with Wide Input Voltage Range Reference Design

This reference design shows an alternative way for a non-isolated PLC power supply to generate a stable output voltage, which is in between the minimum and maximum input voltage. Although a buck boost topology is more commonly used, the coupled inductor single-ended primary-inductance converter (...)
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WSON (NGT) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian

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