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www.rohm.co.jp
9 September 2015 Rev.002
Switching Regulator Series
Step-Down DC/DC Converter
BD9A100MUV Evaluation Board
BD9A100MUV-EVK-001
Description
This evaluation board has been developed for ROHM’s synchronous buck DC/DC converter customers evaluating
BD9A100MUV. While accepting a power supply of 2.7-5.5V, an output of 1.8V can be produced. The IC has internal 60m
Ω
high-side N-channel MOSFET and 60m
Ω
low-side N-channel MOSFET and a synchronization frequency is of 1MHz. A
Soft Start circuit prevents in-rush current during startup. An EN pin allows for simple ON/OFF control of the IC to reduce
standby current consumption. A MODE pin allows the user to select fixed frequency PWM mode or enables the Deep-SLLM
control and the mode is automatically switched between the Deep-SLLM control and fixed frequency PWM mode. Include
OCP (Over Current Protection) and SCP (Short Circuit Protection).
Evaluation Board Operating Limits and Absolute Maximum Ratings
(Ta=25
℃
)
Parameter Symbol
Limit
Unit Conditions
MIN TYP MAX
Supply Voltage
V
CC
2.7 - 5.5 V
Output Voltage /
Current
V
OUT
- 1.8 - V
I
OUT
- - 1 A
Evaluation Board
Figure 1. BD9A100MUV-EVK-001 Evaluation Board
