MP20045DN datasheet(5/5 Pages) MPS

5 / 5 page

EV20045DN-00A – LOW NOISE, 1A LINEAR REGULATOR

NOTICE:

The information in this document is subject to change without notice. Please contact MPS for current specifications.

Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS

products into any application. MPS will not assume any legal responsibility for any said applications.

EV20045DN-00A Rev. 1.0

www.MonolithicPower.com

11/3/2009

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

QUICK START GUIDE (MODIFICATION FOR FIXED OUTPUT)

For modifying the EV20045DN-00A to accommodate a fixed output voltage version of the MP20045 as

the figure 5:

1. Carefully remove the IC(U1) and replace it with the corresponding fixed output version of the

MP20045 chip.

2. Remove both R1 and R2.

3. Short R1 while leaving R2 open.

4. Attach the positive and negative ends of the load to the VOUT and GND pins, respectively.

5. Attach the Input Voltage (3.5V ≤ VIN ≤ 5.5V) and Input Ground to the VIN and GND pins,

respectively.

6. To enable the MP20045, apply a voltage, 1.5V ≤ VEN ≤ 5.5V, to the EN pin. To disable the MP20045,

apply a voltage, VEN < 0.4V, to the EN pin. The EN pin can be connected to VIN with a 100kΩ

resistor for automatic startup.

Please refer to the datasheet for the detailed information of the different output voltage option of

MP20045.

MP20045DN Datasheet(PDF) 5 Page - Monolithic Power Systems