BD8314NUV-E2

Overview

The BD8314NUV-E2 is a non-synchronous boost switching regulator IC manufactured by Rohm Semiconductor. It features an integrated N-channel FET switch with a rated current of 2.5A and an on-resistance of 80mΩ. The device operates within an input voltage range of 3V to 12V, providing an adjustable output voltage from 4V to 12V. It supports a fixed switching frequency of 1.2MHz and includes internal phase compensation components between the error amplifier output and input terminals. The IC offers timer latch-type short circuit protection and functions across a temperature range of -25°C to +85°C.

Feature Summary

• Integrates a high-current N-channel FET switch rated at 2.5A for efficient power conversion
• Includes internal phase compensation components to simplify external component requirements
• Features timer latch-type short circuit protection for enhanced reliability

Applications

• Generating boosted outputs such as 8V or 10V from battery sources like 4-cell batteries, Li-ion, or Li-polymer cells
• Step-up conversion from 5V fixed power supplies
• Compact power supply designs requiring small inductor and capacitor footprints due to high-frequency operation

Procurement Notes

Verify the specific suffix E2 against the manufacturer's datasheet to confirm RoHS compliance and material declarations. Ensure the ordering quantity aligns with the standard taping specification of 3,000 units per reel. Confirm that the application environment remains within the specified operating temperature limits of -25°C to +85°C. Validate that the required output voltage falls within the 4V to 12V adjustable range defined in the official specifications.

Selection Notes

Select this component when a non-synchronous topology is sufficient for the load requirements. The 1.2MHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. The integrated 2.5A switch capability supports moderate load currents without external MOSFETs. Consider the VSON010V3030 package dimensions if board space is constrained. Verify that the input source can maintain stability within the 3V to 12V operational window.

Part Context

This part belongs to the BD8314 series of boost converters from Rohm Semiconductor. It is designed for applications requiring a single-channel step-up configuration. The device integrates both the controller logic and the power switch into a single chip. It targets portable electronics and systems powered by multi-cell batteries or fixed voltage rails where compact size and efficiency are prioritized over synchronous rectification benefits.

Replacement Considerations

Check for BD8314 variants with different suffixes for packaging or environmental compliance differences. Verify compatibility with existing PCB layouts due to the VSON010V3030 footprint. Ensure substitute parts support the same 1.2MHz frequency and 2.5A current rating.