BD9528AMUV-E2

Overview

The BD9528AMUV-E2 is a multi-output power management IC from ROHM Semiconductor, designed for high-efficiency voltage regulation. It integrates two synchronous buck converters and two linear regulators (LDOs) within a single package. The device supports an input voltage range of 5.5V to 28V, with adjustable output voltages up to 5.5V for the buck channels and a fixed 3.3V/100mA output for one LDO channel. Operating frequencies are configurable between 200kHz and 500kHz. The component functions reliably across an extended temperature range of -20°C to +100°C and utilizes a 32-pin VQFN package.

Feature Summary

• Integrates dual synchronous buck converters and dual linear regulators for comprehensive power distribution
• Supports wide input voltage range suitable for various system power architectures
• Features adjustable switching frequency to optimize efficiency and filter size
• Includes shutdown functionality for power management control

Applications

• Portable electronic devices requiring multiple voltage rails
• Industrial control systems needing robust power regulation
• Automotive infotainment and instrument cluster power supplies

Procurement Notes

Verify component status carefully as this part is marked NRND (Not Recommended for New Designs). Confirm availability through authorized distributors, noting that stock may be limited or unavailable. Ensure final design decisions account for potential obsolescence and long-term supply chain risks associated with end-of-life components.

Selection Notes

Choose this IC when a compact solution combining both switching and linear regulation is required. Evaluate thermal performance due to the integrated topology in a small footprint. Consider the specific output current requirements of the LDO channels against the buck converter capabilities to ensure adequate power delivery for all system loads.

Part Context

This component belongs to ROHM's H³® series of power management ICs, which focus on integrating multiple regulator types to reduce board space. It serves as a consolidated power solution compared to using discrete controllers and regulators separately, aiming to simplify schematic design and PCB layout for complex multi-rail systems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the NRND status, alternative selection should involve consulting ROHM for current recommended replacements or evaluating similar multi-output PMICs with compatible pinouts and electrical specifications.