FAN54151UCX

Battery Management Overview

The FAN54151UCX is a high-current bypass charger manufactured by ON Semiconductor (formerly Fairchild Semiconductor). It is designed for battery management applications, specifically supporting lithium-ion and lithium-polymer batteries. The device operates within an input voltage range of 4 V to 6 V and delivers a maximum output current of 1.45 A. It features a compact WLCSP-20 package with dimensions of 1.96 mm x 1.87 mm x 0.378 mm. The component supports surface mount technology and functions across a temperature range of -40 °C to +85 °C.

Battery Management Feature Summary

• Supports high-current charging for single-cell lithium-ion and lithium-polymer batteries
• Integrates power path management for system load prioritization
• Utilizes a small footprint WLCSP-20 package for space-constrained designs

Battery Management Applications

• Mobile phones
• Portable media players
• Personal digital assistants

Battery Management Procurement Notes

Verify the manufacturer designation carefully, as the part may be listed under ON Semiconductor due to corporate acquisition history. Confirm the specific suffix 'UCX' matches the required packaging configuration, such as cut tape or reel options. Ensure compatibility with the target PCB layout for the WLCSP-20 package. Check for any end-of-life notifications or process change notifications associated with this specific part number before finalizing procurement plans.

Battery Management Selection Notes

Select this component when a compact solution is required for high-current charging in portable electronics. The WLCSP-20 package offers significant size reduction compared to traditional QFN packages. Verify that the application requires the specific 1.45 A output capability and 4 V to 6 V input range. Consider thermal performance requirements given the small form factor and high current density.

Battery Management Part Context

This component belongs to the FAN54xx series of battery charge management ICs from Fairchild Semiconductor. These devices are engineered for mobile consumer electronics requiring efficient power management in minimal space. The series typically integrates switching regulators with power path controllers to optimize charging efficiency and system uptime.

Battery Management FAQ

What battery types does the FAN54151UCX support?

It supports single-cell lithium-ion and lithium-polymer batteries.

What is the operating supply voltage range?

The operating supply voltage range is 4 V to 6 V.