MP2108DK MPS [Monolithic Power Systems], MP2108DK Datasheet - Page 4

• Manufacturer Part Number: MP2108DK
• Description: 2A, 6V, 720KHz Synchronous Buck Converter
• Manufacturer: MPS [Monolithic Power Systems]

QUICK START GUIDE
The output voltage of this board is set to 1.8V. The board layout accommodates most commonly used
inductors and output capacitors.
The optional bootstrap diode (D3) may be added for improved efficiency.
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.
EV2108DQ/DK-00A Rev. 1.0
3/2/2006
1. Attach the positive and negative ends of the load to the VOUT and GND pins, respectively.
2. Attach the input voltage (2.6V ≤ V
3. A pull-up resistor has connected the RUN pin to the VIN pin, so the MP2108 will startup
4. The output voltage V
respectively.
automatically without applying an external voltage to the RUN pin.
formula:
where V
For example, for V
for the closest standard 1% value.
See Maximum Duty Cycle limits to determine allowable output voltages.
R
3
=
R
TM
4
×
FB
(
V
= 0.9V and R4 = 10kΩ.
V
OUT
FB
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
−
EV2108DQ/DK-00A – 2A, 6V, 720KHz SYNCHRONOUS BUCK CONVERTER
) 1
OUT
=
OUT
10
= 2.5V:
k
can be changed by varying R3. Calculate the new value using the
Ω
×
(
2
0
5 .
9 .
© 2006 MPS. All Rights Reserved.
V
V
IN
−
www.MonolithicPower.com
≤ 6V) and input ground to the IN and GND pins,
) 1
R
=
3
17
=
R
.
78
4
k
×
Ω
(
V
V
~
OUT
FB
17
.
k 8
−
) 1
Ω
EVALUATION BOARD
4