LMR24210

LMR24210 SIMPLE SWITCHER® 42Vin ， 1.0A降压稳压器中的micro SMD LMR24210 SIMPLE SWITCHER? 42Vin, 1.0A Step-Down Voltage Regulator in micro SMD

The Synchronously Rectified Buck Converter features all required functions to implement a highly efficient and cost effective buck regulator. It is capable of supplying 1A to loads with an output voltage as low as 0.8V. Dual N-Channel synchronous MOSFET switches allow a low component count, thus reducing complexity and minimizing board size.

Different from most other COT regulators, the LMR24210 does not rely on output capacitor ESR for stability, and is designed to work exceptionally well with ceramic and other very low ESR output capacitors. It requires no loop compensation, results in a fast load transient response and simple circuit implementation. The operating frequency remains nearly constant with line variations due to the inverse relationship between the input voltage and the on-time. The operating frequency can be externally programmed up to 1 MHz. Protection features include VCC under-voltage lock-out, output over-voltage protection, thermal shutdown, and gate drive under-voltage lock-out. The LMR24210 is available in the small DSBGA low profile chip-scale package.

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Input Voltage Range of 4.5V to 42V

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Output Voltage Range of 0.8V to 24V

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Output Current up to 1.0A

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Integrated low RDSON Synchronous MOSFETs for High Efficiency

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Up to 1 MHz Switching Frequency

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Low Shutdown Iq, 25 µA Typical

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Programmable Soft-Start

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No Loop Compensation Required

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COT Architecture with ERM

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28-Bump DSBGA 2.45 x 3.64 x 0.60 mm Packaging

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Fully Enabled for WEBENCH® Power Designer

## Performance Benefits

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Tiny Overall Solution Reduces System Cost

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Integrated Synchronous MOSFETs Provides High Efficiency at Low Output Voltages

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COT with ERM Architecture Requires No Loop Compensation, Reduces Component Count, and Provides Ultra Fast Transient Response

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Stable with Low ESR Capacitors

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