DC2721A-A: -0.9 ~ -5.2V @ 2A, 4 ~ 15V in


Demonstration circuit 2721A-A features the LTM4623 µModule regulator, a tiny high performance high efficiency step-down regulator configured as an inverting buck-boost regulator. The DC2721A-A has an operating input voltage range of 4V to 15V and is able to provide an output current of up to 2A. The output voltage can be programmed between -0.6V and -5.5V. The LTM4623 is a complete DC/DC point of load regulator in a thermally enhanced 6.25mm × 6.25mm × 1.82mm LGA package requiring only a few input and output capacitors.

The LTM4623 data sheet must be read in conjunction with this demo manual for working on or modifying demo circuit 2721A-A.


Manufacturer Analog Devices Inc.
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number DC2721A-A-ND
Eval Board Supplier Analog Devices Inc.
Eval Board Normally In Stock
Topology Inverting
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set -0.9V ~ -5.2V
Current Out 2 A
Voltage In 4 ~ 15 V
Efficiency @ Conditions >86%, 12V in, -5.2V @ 0.8 ~ 2 A
>85%, 5V in, -5.2V @ 0.4 ~ 1.3 A
>85%, 5V in, -3.3V @ 0.4 ~ 1.4 A
>84%, 12V in, -3.3V @ 0.6 ~ 2 A
>79%, 5V in, -0.9V @ 0.4 ~ 1.3 A
>74%, 12V in, -0.9V @ 0.8 ~ 1.8 A
Voltage Out Range -0.6 ~ -5.5 V
Features Light Load Mode
Over Current Protection
Over Voltage Protection
Power Good Output
Thermal Protection
Voltage Tracking
Switching Frequency 1 MHz
Standby Current [Typical] 11 µA
Quiescent Current [Typical] 6 mA
Component Count + Extras 35 + 34
Internal Switch Yes
Design Author Linear Technology
Application / Target Market Networking
Point of Load (PoL)
Power: Industrial Power
Test and Measurement Equipment
Standby Current [Maximum] - Not Given
Quiescent Current [Maximum] - Not Given
Main I.C. Base Part LTM4623
Date Created By Author 2017-10
Date Added To Library 2018-04

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