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LMR24220EVAL: 3.3V @ 2A, 4.5 ~ 42V in

Summary

The LMR24210/20 (1.0A/2.0A) Step Down Switching Regulator features all required functions to implement a cost effective, efficient buck power converter capable of supplying up to 1.0A or 2.0A. The Constant On-Time (COT) regulation scheme requires no loop compensation, results in a fast load transient response and simple circuit implementation, this allows low component count, and consequently very small overall board space. The regulator can function properly even with an all ceramic output capacitor network, and does not rely on the output capacitor’s ESR for stability.

The LMR24210/20 has a wide input range from 4.5V-42V, making it suitable for a variety of applications from automotive to power conditioning of unregulated sources. The LMR24210/20 Evaluation Board is designed to provide the design engineer with a fully functional power converter to evaluate the LMR24210/20 series of buck regulators.

Specifications

Manufacturer Texas Instruments
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number 296-46047-ND
Eval Board Supplier Texas Instruments
Eval Board Normally In Stock
Topology Step Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 3.3 V
Current Out 2 A
Voltage In 4.5 ~ 42 V
Efficiency @ Conditions >90%, 5V in, 3.3V @ 0.1 ~ 1.5 A
>87%, 12V in, 3.3V @ 0.4 ~ 2 A
Voltage Out Range - Not Given
Features Current Limit (Adj. or Fixed)
Shutdown, Enable, Standby
Soft Start
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 500 kHz
Standby Current [Typical] 25 µA
Quiescent Current [Typical] 700 µA
Component Count + Extras 11 + 5
Internal Switch Yes
Design Author Texas Instruments
Application / Target Market Automotive
Point of Load (PoL)
Standby Current [Maximum] 40 µA
Quiescent Current [Maximum] 1 mA
Main I.C. Base Part LMR24220
Date Created By Author 2011-11
Date Added To Library 2012-06

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