BD9E202FP4-ZTL

Overview

The BD9E202FP4-ZTL is a single-channel synchronous buck DC-DC converter from ROHM Semiconductor, designed for power management applications. It features an integrated low on-resistance power MOSFET and operates with a wide input voltage range of 4.5V to 26V. The device delivers a maximum output current of 2A and supports adjustable output voltages. Key technical specifications include a switching frequency setting up to 0.5MHz and operation within a temperature range of -40°C to 85°C. It incorporates light load mode control to enhance efficiency at low power levels, making it suitable for devices requiring reduced standby power consumption.

Feature Summary

• Integrates a low on-resistance power MOSFET for efficient synchronous buck conversion
• Utilizes light load mode control to improve efficiency during low-power operation
• Features constant on-time control system for fast transient response
• Includes comprehensive protection mechanisms such as over-voltage, over-current, and thermal shutdown

Applications

• Power supply circuits for home appliances like refrigerators and washing machines
• Industrial equipment power systems including PLCs and inverters
• AC servo motor drive power supplies
• General consumer electronics requiring compact and efficient power regulation

Procurement Notes

Verify the exact ordering suffix and package variant when sourcing, as availability may vary by region and distributor. Confirm that the component meets the required industrial or consumer grade standards for your specific application environment. Ensure compatibility with existing PCB layouts and thermal management strategies, as the TSOT23-6L package has specific mounting requirements. Cross-reference the latest datasheet revisions to confirm pinout and electrical characteristics before finalizing procurement.

Selection Notes

Select this component for applications requiring a compact solution with high efficiency at light loads. The 2A output current capability suits moderate power demands in space-constrained designs. Consider the 4.5V to 26V input range for versatility in various supply rail configurations. Evaluate the need for internal phase compensation and spread spectrum features to minimize EMI without external components. Compare against higher current variants if peak load requirements exceed 2A.

Part Context

This part belongs to the BD9E series of integrated MOSFET DC-DC converters from ROHM. The series is characterized by small SOT23 packaging, which reduces installation area significantly compared to standard SOP-J8 packages. These converters are targeted at reducing standby power in consumer and industrial devices through advanced light load control techniques.

Replacement Considerations

Direct substitutes within the same family include BD9E105FP4-Z for lower current needs or BD9E304FP4-LBZ for higher current requirements. Verify pin compatibility and electrical parameters before substitution. Other ROHM parts in the BD9E series may serve as alternatives depending on specific input/output voltage and current constraints.