BD88220GUL-E2

Overview

The BD88220GUL-E2 is a coupling capacitorless headphone amplifier manufactured by ROHM Semiconductor. It operates on a single power supply ranging from 2.4 V to 5.5 V and delivers 80 mW per channel into a 16 Ω load. The device features a built-in regulated charge pump that generates a negative voltage directly from the supply, enabling ground-referenced output without large output capacitors. Key electrical parameters include a standby current of 0.1 µA, a total harmonic distortion plus noise (THD+N) of 0.006%, and an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates a regulated charge pump circuit to generate negative voltage for direct ground-referenced output
• Eliminates the need for large output coupling capacitors to reduce board area and component height
• Provides high-fidelity audio performance with low distortion and high signal-to-noise ratio

Applications

• Mobile phone audio circuits
• Portable media players
• Handheld gaming devices

Procurement Notes

Verify the specific suffix E2 against the manufacturer's latest documentation to confirm compliance with current environmental standards and pinout configurations. Ensure the ordering information matches the exact package type VCSP50L2. Cross-reference the part number with official ROHM distributors to validate authenticity and avoid counterfeit components during procurement.

Selection Notes

Select this component when designing space-constrained portable electronics requiring high-quality stereo audio. It is suitable for applications where eliminating bulky output capacitors is critical for miniaturization. Consider the 2.4 V minimum supply voltage and 80 mW output capability relative to the target speaker impedance and battery life requirements.

Part Context

This component belongs to the BD88□□□GUL series of coupling capacitorless headphone amplifiers. The series utilizes a unique charge pump architecture to drive headphones directly from a single power source. This family is designed specifically for consumer electronics where size reduction and cost efficiency are primary design drivers, distinguishing it from traditional amplifier designs requiring external coupling capacitors.

Replacement Considerations

Consult official ROHM documentation for verified substitute part numbers within the BD88 series. Do not assume functional compatibility with other manufacturers' audio amplifiers without verifying pinouts, supply voltage ranges, and thermal characteristics.