MP8802DJ2.5 데이터 시트보기 (PDF) - Monolithic Power Systems

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MP8802DJ2.5

Low Dropout 250mA Linear Regulator

Monolithic Power Systems 

EV8802DJ-00A — LOW DROPOUT 250mA LINEAR REGULATOR

EVALUATION BOARD

QUICK START GUIDE

The output voltage of this board is set to 2.5V. The EN pin is connected to VIN with a 10kΩ

resistor for automatic startup. You can connect EN to GND to disable the MP8802.

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

respectively.

2. Attach an input voltage (2.7V ≤ VIN ≤ 6.5V) and input ground to the VIN and GND pins,

respectively.

3. The output voltage (VOUT) can be changed by adding a resistor divider (R1 and R2). A

10kΩ (±1%) resistor should be used for the low-side resistor R2 of the voltage divider.

The high side resistor R1 can be determined by the equation:

R1

=

R2

×

⎜⎜⎝⎛

VOUT −

VFB

VFB

⎟⎟⎠⎞

Where VFB is the OUT feedback threshold voltage equal to 1.222V.

The following table lists values for R1 corresponding to the selected output voltages:

VOUT (V)

1.25

1.5

1.8

2

2.5

2.8

3

3.3

4

5

R1 (Ω)

232

2.26k

4.75k

6.34k

10.5k

13k

14.7k

16.9k

22.6k

30.9k

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.

EV8802DJ-00A Rev. 1.0

www.MonolithicPower.com

4

1/25/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

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