BD00KA5WF-E2

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The BD00KA5WF-E2 is a positive, adjustable low-dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It operates within an input voltage range of 2.3 V to 5.5 V and delivers a maximum output current of 500 mA. The device features an adjustable output voltage range from 1 V to 4 V, set via external resistors, with a typical dropout voltage of 120 mV at 200 mA and a maximum of 200 mV. Key electrical parameters include a ripple rejection ratio of 50 dB, line regulation of 10 mV, and load regulation of 25 mV. The quiescent current is 550 µA, and the reference voltage is 758 mV. It supports power dissipation up to 687.6 mW and functions reliably across an operating temperature range of -40°C to +105°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Integrates ON/OFF shutdown functionality that reduces circuit current to 0 µA when disabled.
• Includes built-in over-current protection and thermal shutdown circuits to prevent IC damage during short circuits or overload conditions.
• Provides stable operation with low saturation characteristics suitable for local power supply applications.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Local power supplies in television sets
• Power management for hard disk drives (HDD)
• Voltage regulation in personal computers (PC)
• Power circuits for DVD players

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix and package variant against the official datasheet, as the BD00KA5 series includes both SOP-8 and TO-252-5 packages with different electrical ratings. Confirm RoHS compliance status and ensure the selected part matches the required output voltage configuration. Check for any automotive usage restrictions if applicable, as standard-grade products may not be recommended for vehicle equipment. Validate pinout compatibility before integration into existing designs.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when an adjustable output voltage between 1 V and 4 V is required with high precision. The BD00KA5WF-E2 is suitable for space-constrained designs due to its small footprint and low quiescent current. Consider the thermal performance and power dissipation limits when designing for high-load conditions. Ensure the input voltage remains within the specified 2.3 V to 5.5 V range for optimal regulation and stability.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The BD00KA5WF-E2 belongs to ROHM's secondary LDO regulator series, designed for miniaturization and energy efficiency. This family offers fixed and adjustable output options with ±1% accuracy at 25°C. The series is characterized by low noise and stable operation, making it ideal for sensitive electronic devices. The BD00KA5WF-E2 specifically provides adjustable output capability, distinguishing it from fixed-voltage variants within the same product line.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct substitutes within the same series include BD10KA5WF-E2, BD12KA5WF-E2, BD18KA5WF-E2, and BD33KA5WF-E2, which offer fixed output voltages. For adjustable outputs in alternative packages, consider BD00KA5WFP-E2. Verify that replacement parts match the required output voltage type and package dimensions to ensure mechanical and electrical compatibility.