EV2351DQ-00A Datasheet, PDF (3/3 Pages) Monolithic Power Systems – 4.75V to 23V Input, 1.5A Output Step-Down DC/DC Converter

EV2351DQ-00A – 4.75V TO 23V INPUT, 1.5A OUTPUT STEP-DOWN CONVERTER
EVALUATION BOARD - INITIAL RELEASE
PRINTED CIRCUIT BOARD LAYOUT
Figure 1—Top Silk Layer
Figure 2—Top Layer
Figure 3—Bottom Layer
QUICK START GUIDE
1. Connect the positive terminal of the load to VOUT pins, and the negative terminal of the load to
GND pins
2. Preset the power supply output to 4.75V – 23V and turn off the power supply.
3. Connect the positive terminal of the power supply output to the VIN pin and the negative
terminal of the power supply output to the GND pin
4. Turn the power supply on. The MP2351 will automatically startup.
5. To use the Enable function, apply a digital input to EN pin. Drive EN higher than 2.5V to turn on
the regulator, drive EN less than 0.7V to turn it off.
6. An input under voltage lockout (UVLO) function can be implemented by the addition of a resistor
divider R4 and R5.
The
EN
threshold
is
2.5V,
so
V_IN
UVLO
threshold
is:
⎜⎛1 +
⎝
R4 _{⎟⎞ × 2.5V}
R5 _⎠
.
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.
EV2351DQ-00A Rev. 1.1
www.MonolithicPower.com
3
3/29/2005
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