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LM5008
  • LM5008
  • LM5008
  • LM5008
  • LM5008
  • LM5008

LM5008

ACTIVE

9.5-95V Wide Vin, 350mA Constant On-Time Non-Synchronous Buck Regulator

Texas Instruments LM5008 Product Info

1 April 2026 4

Parameters

Rating

Catalog

Topology

Buck

Iout (max) (A)

0.35

Vin (max) (V)

95

Vin (min) (V)

9.5

Vout (max) (V)

75

Vout (min) (V)

2.5

Features

Enable, Over Current Protection

Control mode

Constant on-time (COT)

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.000485

Duty cycle (max) (%)

99

Package

VSSOP (DGK)-8-14.7 mm² 3 x 4.9

Features

  • Operating Input Voltage Range: 6 V to 95 V
  • Integrated 100-V, N-Channel Buck Switch
  • Internal VCC Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • On-Time Varies Inversely With Line Voltage
  • Operating Frequency Remains Constant With Varying Line Voltage and Load Current
  • Adjustable Output Voltage
  • Highly Efficient Operation
  • Precision Internal Reference
  • Low Bias Current
  • Intelligent Current Limit Protection
  • Thermal Shutdown
  • 8-Pin VSSOP and WSON Packages
  • Create a Custom Design Using the LM5008 With the WEBENCH® Power Designer
  • Operating Input Voltage Range: 6 V to 95 V
  • Integrated 100-V, N-Channel Buck Switch
  • Internal VCC Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • On-Time Varies Inversely With Line Voltage
  • Operating Frequency Remains Constant With Varying Line Voltage and Load Current
  • Adjustable Output Voltage
  • Highly Efficient Operation
  • Precision Internal Reference
  • Low Bias Current
  • Intelligent Current Limit Protection
  • Thermal Shutdown
  • 8-Pin VSSOP and WSON Packages
  • Create a Custom Design Using the LM5008 With the WEBENCH® Power Designer

Description

The LM5008 350-mA step-down switching converter features all of the functions needed to implement a low-cost and efficient buck regulator. This high-voltage converter has an integrated 100-V N-channel buck switch and operates over an input voltage range of 9 V to 95 V. The device is easy to implement and is provided in the 8-pin VSSOP and the thermally enhanced 8-pin WSON packages. The converter uses a hysteretic control scheme with a PWM on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The hysteretic control requires no loop compensation. An intelligent current limit is implemented with forced off-time, which is inversely proportional to VOUT. This scheme ensures short-circuit protection while providing minimum foldback. Other protection features include: thermal shutdown, VCC undervoltage lockout, gate drive undervoltage lockout, and maximum duty cycle limiter.

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