LM22680EVAL: 3.3V @ 2A, 4.5 ~ 42 Vin


The LM22680 evaluation board is designed to demonstrate the capabilities of the LM22680 switching regulator. The LM22680 is configured to provide an output voltage of 3.3V up to 2A load current with an input voltage range of 4.5V to 42V.

Due to the low RDS(ON) of the integrated N-channel MOSFET and maximum duty-cycle limitations, the minimum input voltage of 4.5V will only provide a 3.3V output voltage for load currents up to 500 mA. For load currents higher than 500 mA, an input voltage of 5.5V or higher is required. The typical operating frequency is 500 kHz. The evaluation board is designed to operate at ambient temperatures up to 65°C, and at steady state operating conditions.


Manufacturer Texas Instruments
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number LM22680EVAL/NOPB-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 >86%, 12V in, 3.3V @ 0.3 ~ 2 A
>82%, 24V in, 3.3V @ 0.5 ~ 2 A
>78%, 36V in, 3.3V @ 0.5 ~ 2 A
Voltage Out Range 1.285 ~ 37 V
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] 3.4 mA
Component Count + Extras 9 + 7
Internal Switch Yes
Design Author Texas Instruments
Application / Target Market Automotive
Point of Load (PoL)
Standby Current [Maximum] 40 µA
Quiescent Current [Maximum] 6 mA
Main I.C. Base Part LM22680
Date Created By Author
Date Added To Library 2011-03

Eval Board

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