Rohm Switching Regulator Series User Manual

Switching Regulator Series
Step-Down DC/DC Converter
BD9A301MUV-LB Evaluation Board
BD9A301MUV-EVK-001
BD9A301MUV-EVK-001 Evaluation board delivers an output 1.8 volts from an input 2.7 to 5.5 volts using BD9A301MUV-LB, a synchronous
rectification step-down DC/DC converter integrated circuit, with output current rating of maximum 3A. It offers high efficiency in all load ranges by
equipping the efficiency improvement function in light-load. The output voltage can be set by changing the external parts of circuit and the loop-
response characteristics also can be adjusted by the phase compensation circuit.
Performance specification
These are representative values, and it is not a guaranteed against the characteristics.
V = 5.0V, V = 1.8V, Unless otherwise specified.
IN OUT
Input Voltage Range
Output Voltage
Output Voltage Setting Range
Output Current Range
Loop Band Width
Phase Margin
Input Ripple Voltage
Output Ripple Voltage
Output Rising Time
Operating Frequency
Maximum Efficiency
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Parameter Min
2.7
0.8
Typ Max
5.5
1.8
V ×0.7
IN
0 3.0
89.1
54.1
140
40
5
1.0
91.8
1/10
User's Guide
Units Conditions
V
R1=30kΩ, R2=24kΩ
V
V
A
kHz
degrees
mVpp I = 3.0A
O
mVpp I = 3.0A
O
ms
MHz
% I = 0.7A
O
No. 60UG004E Rev.001
APR.2017