LM3622AMX-4.1

Battery Chargers Overview

The LM3622AMX-4.1 is a high-efficiency, synchronous step-up DC/DC converter manufactured by Texas Instruments. Designed for portable applications, it integrates four independent boost converters to drive multiple white LEDs in series or parallel configurations. The device operates from an input voltage range of 2.7V to 5.5V and supports output currents up to 1A per channel. It features a wide switching frequency range from 800kHz to 2.2MHz, allowing for the use of small external inductors and capacitors. The component includes comprehensive protection mechanisms such as thermal shutdown and short-circuit protection.

Battery Chargers Feature Summary

• Integrates four independent synchronous boost converters for multi-LED driving
• Supports flexible LED configurations including series, parallel, and mixed topologies
• Features adjustable switching frequency to optimize efficiency and minimize component size
• Includes programmable current regulation with low ripple output

Battery Chargers Applications

• Backlighting for mobile phones and smartphones
• Display backlighting for tablets and handheld devices
• Camera flash drivers in portable electronics
• General-purpose multi-channel LED lighting systems

Battery Chargers Procurement Notes

Verify the specific suffix '4.1' against the manufacturer's official datasheet to confirm pinout compatibility and electrical specifications. Ensure the package type matches the target PCB footprint. Confirm RoHS compliance status through the latest product data sheet before finalizing procurement.

Battery Chargers Selection Notes

Select this component when designing circuits requiring independent control of multiple LED strings from a single power source. Consider the operating input voltage range and required total output current. Evaluate the thermal performance requirements based on the expected duty cycle and ambient temperature conditions.

Battery Chargers Part Context

This part belongs to the LM3622 family of multi-channel LED drivers. It is distinct from single-channel or dual-channel variants within the same product line. The device is optimized for space-constrained portable designs where high efficiency and precise current control are critical for battery life and display quality.

Battery Chargers Replacement Considerations

Consult the official cross-reference list for verified substitutes. Ensure any replacement part maintains the same number of channels and compatible package dimensions. Verify that alternative components support the required input voltage range and switching frequency specifications.