BD9E151ANUX-TR

Overview

The BD9E151ANUX-TR is a single-channel step-down switching regulator manufactured by ROHM Semiconductor. It features an integrated power MOSFET with a maximum on-resistance of 80mΩ and supports a wide input voltage range from 6V to 28V. The device delivers a maximum output current of 1.2A with an adjustable output voltage between 1V and 19.6V. Operating at a typical switching frequency of 600kHz, it utilizes non-synchronous rectification with automatic pulse skipping for light-load efficiency. Key electrical specifications include a standby input current of 0μA and a quiescent current of 10μA. It is housed in a compact VSON-8 (2.0x3.0mm) package and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a high-voltage power MOSFET capable of handling up to 28V input.
• Achieves high efficiency in light-load conditions through automatic pulse skipping operation.
• Provides comprehensive protection mechanisms including over-current, under-voltage lockout, over-voltage, and thermal shutdown.
• Enables ultra-low power consumption in shutdown mode with zero standby input current.

Applications

• Battery-powered portable electronic devices requiring low standby current
• General-purpose DC-DC conversion for embedded systems
• Industrial control circuits operating within wide input voltage ranges

Procurement Notes

Verify the specific suffix 'ANUX' against the manufacturer's latest datasheet to confirm pinout compatibility and functional equivalence. Ensure that the ordering information matches the required tape-and-reel quantity. Cross-reference the RoHS status and environmental compliance data with current regulatory requirements before finalizing procurement decisions.

Selection Notes

Select this component when a wide input voltage range up to 28V is required alongside moderate output current capabilities. It is suitable for designs prioritizing small footprint due to the VSON-8 packaging. Consider its non-synchronous topology for cost-sensitive applications where extreme peak efficiency at very light loads is not the primary constraint compared to simpler external compensation requirements.

Part Context

This part belongs to the BD9E series of buck converters from ROHM, designed for general-purpose power management. The series offers various current ratings and input voltage options. The BD9E151 specifically targets applications needing robustness against higher input voltages while maintaining a compact solution size. It complements other ROHM PMICs by providing a reliable, single-output regulation stage for mid-range power demands.

Replacement Considerations

BD9E151NUX-TR is listed as a discontinued alternative; verify current availability and parameter equivalence if considering legacy replacements.