UC3909NG4

Battery Chargers Overview

The UC3909NG4 is a switchmode lead-acid battery charger controller manufactured by Texas Instruments. It operates within an input voltage range of 7.5 V to 40 V and supports a maximum output current of 4.5 mA. The device is designed for through-hole installation in a 20-pin SOIC package, with an operating temperature range spanning from -20 °C to +70 °C.

Battery Chargers Feature Summary

• Integrated switchmode control architecture optimized for lead-acid battery charging applications
• Supports operation across a wide input voltage range suitable for various power supply configurations

Battery Chargers Applications

• Lead-acid battery charging systems
• Switchmode battery management circuits

Battery Chargers Procurement Notes

Verify the specific package variant against requirements, as the NG4 suffix typically denotes a lead-free RoHS-compliant version. Confirm that the 20-pin SOIC form factor aligns with the target PCB layout and assembly capabilities. Ensure the operating temperature range meets the environmental specifications of the final application.

Battery Chargers Selection Notes

Select this component when designing switchmode chargers for lead-acid batteries requiring integrated control logic. The wide input voltage range allows flexibility in power source selection. Consider the through-hole mounting style if manual assembly or high-reliability mechanical attachment is preferred over surface-mount alternatives.

Battery Chargers Part Context

This part belongs to the UC3909 series of switchmode battery chargers. It shares functional similarities with other TI battery management ICs like the UC2909 but differs in packaging and specific electrical characteristics. The series is designed to simplify the design of efficient battery charging systems for automotive and industrial applications.

Battery Chargers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.