LMR10520YSDDEMO: 0.6 ~ 4.5V @ 2A, 3 ~ 5.5V in

Summary

The LMR10510/LMR10515/LMR10520 is a PWM DC/DC buck (step-down) regulator. With a switching frequency of 3MHz or 1.6MHz the overall solution size is very compact and requires a minimum number of components. The LMR10510/LMR10515/LMR10520 Demo Board is designed to provide the design engineer with a fully functional power converter to evaluate the LMR10510/LMR10515/LMR10520 series of buck regulators. The demo board comes populated with either the LMR10510Y, LMR10515Y, or
LMR10520Y but can easily be modified to accommodate any of the LMR10510/LMR10515/LMR10520 regulator ICs.
Features of the demo board include a 3.0 V to 5.5 V input voltage range with a 1.8V output voltage as the default setting, capable of 2.0 A of output current. The switching frequency is 3 MHz.
The demo board includes a pull-up resistor, R3, to enable the device once VIN has exceeded 1.8 V (typ). Use the EN post to disable the device by pulling this node to GND. A logic signal may be applied to the post to test startup and shutdown of the device.

Specifications

Manufacturer Texas Instruments
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number LMR10520YSDDEMO/NOPB-ND
Eval Board Supplier Texas Instruments
Eval Board Board not Stocked
Topology Step Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 1.8 V
Current Out 2 A
Voltage In 3 ~ 5.5 V
Efficiency @ Conditions >80%, 3.3V in, 1.8V @ 0.05 ~ 1.2 A
>75%, 5V in, 1.8V @ 0.1 ~ 2.0 A
Voltage Out Range 0.6 ~ 4.5 V
Features Current Limit (Adj. or Fixed)
Over Voltage Protection
PFM or PWM
Shutdown, Enable, Standby
Soft Start
Temperature Compensation
Thermal Protection
Switching Frequency 3 MHz
Standby Current [Typical] 30 nA
Quiescent Current [Typical] 4.3 mA
Component Count + Extras 11 + 4
Internal Switch Yes
Design Author Texas Instruments
Application / Target Market Point of Load (PoL)
Portable Devices
Power: Industrial Power
RF: Metering
Standby Current [Maximum] - Not Given
Quiescent Current [Maximum] 6.5 mA
Main I.C. Base Part LMR10520Y
Date Created By Author 2011-10
Date Added To Library 2013-04

Support Documents & Media

Ultra Librarian Software:CAD Symbols and Footprints (Zip File) TI's CAD/CAE Symbols and Footprint Search LMR10520Y - User Guide LMR10520Y - Datasheet

Media

LMR10520YSDEMO_Schematic_Full.png LMR10520YSDEMO_Board_Full.jpg LMR10520YSDEMO_Chart_Full.png