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LM5008
SNVS280I – APRIL 2004 – RE...
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LM5008
SNVS280I – APRIL 2004 – REVISED OCTOBER 2018
LM5008 95-V, 350-mA, Constant On-Time DC/DC Buck Switching
Regulator
1 Features
1 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
2 Applications
Non-Isolated Telecommunication Buck
Regulators Secondary High-Voltage Post
Regulators 48-V Automotive Systems
3 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 highvoltage 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. Th...