ROHM Product Detail

BD9G101G
降压开关稳压器 功率MOSFET内置型

BD9G101G是内置对应42V高输入电压的功率MOSFET的降压开关稳压器。采用SOT23的小型封装，可提供最大0.5A的输出电流。此外，可通过1.5MHz的高频动作使用小型线圈，并通过内置基于电流模式的相位补偿元件实现了设备的小型化。

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主要规格

 
型号 | BD9G101G-TR
Status | 推荐品
封装 | SSOP6
包装形态 | Taping
包装数量 | 3000
最小独立包装数量 | 3000
RoHS | Yes

特性：

ch

1

Integrated FET / Controller

Integrated FET

Topology

Buck

Synchronous / Nonsynchronous

Non-synchronous

Vin1(Min.)[V]

6

Vin1(Max.)[V]

42

Vout1(Min.)[V]

1

Vout1(Max.)[V]

29.4

Iout1(Max.)[A]

0.5

SW frequency setting (Max.)[MHz]

1.7

EN

Yes

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

105

Package Size [mm]

2.9x2.8 (t=1.25)

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特点：

・ High and Wide Input Range (VCC=6V~42V)
・ 45V/800mΩ Internal Power MOSFET
・ 1.5MHz Fixed Operating Frequency
・ Feedback Pin Voltage 0.75V±1.5%
・ Internal compensated
・ Internal Over Current protection, Under Voltage Locked Out, Thermal shutdown
・ 0μA Shutdown Supply Current
・ 6-Lead SOT-23 package(SSOP6)

参考设计 / 应用评估套件

 
    • Evaluation Board - BD9G101G-EVK-101

    • This evaluation board has been specifically developed to evaluate the BD9G101G non-synchronous buck DC/DC converter with integrated 45V/800mΩ power MOSFET. Features include wide input (6V to 42V) and output (1V to VCC x 0.7V) voltage ranges and a switching frequency of 1.5MHz.

    • User's Guide
    • Reference Design - REF68008
    • Industrial 16-Cell BMS Evaluation Platform with ML5238GA AFE and ML63Q8057 MCU

    • This Battery Management System (BMS) platform provides detailed specifications for an industrial-grade lithium-ion battery monitoring and protection solution. It is designed to support reliable operation in demanding industrial energy storage and power backup applications.

      The BMS evaluation platform serves as a reference design for assessing a multi-cell battery monitoring system utilizing ROHM’s ML5238 16-cell Analog Front End (AFE) in combination with the LAPIS ML63Q8057 microcontroller. The system enables accurate cell voltage measurement, current sensing, temperature monitoring, cell balancing, state-of-charge estimation, and fault detection, forming a complete solution for industrial battery packs.

      This evaluation kit integrates the core functional blocks required for BMS operation, including the monitoring circuitry, control firmware, sensing interfaces, non-volatile memory, and PC communication interface. The design is optimized for robustness, measurement accuracy, and long-term reliability, making it suitable for industrial energy storage systems, uninterruptible power supplies (UPS), e-mobility auxiliary systems, and stationary battery applications.

      The reference design includes comprehensive technical resources such as firmware architecture documentation, communication protocol definitions, memory maps, and configuration guidelines. It features a fully functional BMS firmware implementation optimized for industrial environments, supporting protection mechanisms, data logging, diagnostics, and seamless interfacing with a host PC or supervisory controller.

      Users are encouraged to explore the advanced monitoring, protection, and diagnostic capabilities of this BMS evaluation platform and consider its integration or customization for their industrial battery management and energy storage development projects.

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