BD15KA5WF-E2

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

The BD15KA5WF-E2 is a fixed-output low-dropout (LDO) voltage regulator manufactured by ROHM Semiconductor. It provides a stable 1.5 V output with a maximum current capacity of 500 mA. The device operates within an input voltage range of 2.3 V to 5.5 V and features a typical dropout voltage of 120 mV at 0.2 A load. It offers high ripple rejection of 50 dB and maintains a voltage regulation accuracy of ±1%. Integrated protection circuits include thermal shutdown and overcurrent protection. The component is housed in an SOP-8 surface-mount package and supports an operating temperature range from -40°C to +105°C.

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

• Integrates ON/OFF switch functionality that reduces circuit current to 0 µA during shutdown mode for enhanced power efficiency.
• Includes built-in overcurrent protection and thermal shutdown circuits to prevent IC damage under short-circuit or overload conditions.
• Delivers high-precision voltage regulation with ±1% accuracy at 25°C, ensuring stable performance for sensitive local power supplies.

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

• Local power supply regulation for hard disk drives (HDD)
• Power management in personal computers (PC)
• Voltage regulation for DVD players
• Power stages in automotive audio systems

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

Verify the specific suffix E2 confirms compliance with RoHS directives before finalizing procurement. Confirm the SOP-8 package variant matches the intended PCB footprint. Ensure the fixed 1.5 V output aligns with the target circuit requirements, as adjustable variants exist within the same series. Validate that the application does not require automotive-grade certification, as this standard product is not recommended for such use.

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

Select this component when a compact, low-cost LDO is required for fixed 1.5 V applications needing up to 500 mA. The SOP-8 package suits space-constrained designs compared to larger packages. Consider the 2.3 V minimum input voltage constraint; if lower input voltages are present, alternative regulators must be evaluated. The wide operating temperature range makes it suitable for general consumer electronics rather than extreme industrial environments.

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

This part belongs to the BD15KA5WF series of secondary LDO regulators designed for miniaturization and energy saving. The series emphasizes low saturation characteristics and includes various output voltages and packages. It is categorized under PMIC - Power Management ICs. The manufacturer positions these devices for general-purpose consumer electronics where small form factor and basic protection features are prioritized over high-voltage or high-current capabilities.

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

Direct substitutes within the same series include BD10KA5WF-E2 (1.0 V), BD12KA5WF-E2 (1.2 V), and BD00KA5WF-E2 (Adjustable). For identical 1.5 V output but different packaging, consider BD15GA5WEFJ-E2 (HTSOP-J8) or BD15HC5WEFJ-E2 (Higher voltage rating). Verify pin compatibility and thermal dissipation requirements when swapping between SOP-8 and HTSOP-J8 packages.