LM2852X-2.5EVAL: 2.5V @ 2A, 2.85 ~ 5.5V in, 80%

Summary

This application note describes the demonstration board for the LM2852X. The LM2852 is a 2A buck regulator belonging to National Semicondutor’s SIMPLE SYNCHRONOUS® family. The LM2852 input voltage can range from 2.85V to 5.5V. On-chip type-three compensation facilitates simple, low component count power supply design.

The demonstration board for the LM2852X (1500 kHz version) is described in this application note. A separate application note describes the LM2852Y. Factory EEPROM set output voltages from 0.8V to 3.3V in 100mV increments. For detailed information regarding component selection, consult the datasheet.

Specifications

Manufacturer	Texas Instruments
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	296-52381-ND
Eval Board Supplier	Texas Instruments
Eval Board	Board not Stocked
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	2.5 V
Current Out	2 A
Voltage In	2.85 ~ 5.5 V
Efficiency @ Conditions	>85%, 3.3V in, 2.5V @ 200 mA ~ 1.3 A >80%, 5V in, 2.5V @ 400 mA ~ 1.3 A
Voltage Out Range
Features	Light Load Mode Shutdown, Enable, Standby Soft Start Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	1.5 MHz
Standby Current [Typical]	10 µA
Quiescent Current [Typical]	850 µA
Component Count + Extras	8 + 3
Internal Switch	Yes
Design Author	Texas Instruments
Application / Target Market	Computers Point of Load (PoL) Portable Devices Telecom
Standby Current [Maximum]	25 µA
Quiescent Current [Maximum]	2 mA
Main I.C. Base Part	LM2852XMXA-2.5
Date Created By Author	2005-09
Date Added To Library	2011-03