MP2112DQ MPS [Monolithic Power Systems], MP2112DQ Datasheet - Page 4

• Manufacturer Part Number: MP2112DQ
• Description: 1A, 1MHz Synchronous Step-Down Converter
• Manufacturer: MPS [Monolithic Power Systems]

QUICK START GUIDE
The output voltage of this board is set to 1.8V, and the board accommodates most commonly used
inductors and capacitors.
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.
EV2112DQ-00A Rev. 1.0
3/17/2006
1. Attach the positive and negative ends ot the load to the VOUT and GND pins, respectively.
2. Attach the input voltage (2.5V ≤ V
3. The output voltage of this board can be changed by varying the value of resistor R2. Calculate
respectively. The IC should automatically startup.
To operate the IC through the enable pin without automatic startup, first remove resistor R3.
Apply a voltage greater than 1.5V to enable the IC; lower than 0.3V to shut it off. Be careful not
to exceed 6V on the EN pin.
the value of R2 using the equation:
Where V
For example, if V
Therefore, use a 158kΩ (1%) resistor for R2.
R
R
2
2
=
=
V
2
0
V
5 .
6 .
OUT
499
FB
R
V
V
FB
1
k
=0.6V and R1=499kΩ.
−
−
1
1
=
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
158
OUT
k
EV2112DQ-00A – 1A, 1MHz SYNCHRONOUS STEP-DOWN CONVERTER
=2.5V is desired:
© 2006 MPS. All Rights Reserved.
IN
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≤ 6V) and input ground to the VIN and GND pins,
EVALUATION BOARD
4