AOZ1935QI

Overview

The AOZ1935QI is a white backlight LED driver IC manufactured by Alpha & Omega Semiconductor Inc. It features a DC-DC step-up regulator topology with three independent output channels, each capable of delivering up to 20mA. The device operates within an input voltage range of 2.7V to 25V and supports PWM dimming for brightness control. Packaged in a compact 16-QFN (3x3) surface-mount format, it is designed for efficient power management in portable electronic applications requiring reliable LED illumination.

Feature Summary

• Integrates a boost converter for driving high-voltage LED strings from low-voltage sources
• Provides three regulated current outputs for uniform multi-segment backlighting
• Supports pulse-width modulation (PWM) dimming for precise brightness adjustment

Applications

• Portable device LCD backlight systems
• Mobile phone display illumination
• Handheld gaming console screens

Procurement Notes

Verify the specific suffix 'QI' against the manufacturer's official datasheet to confirm pinout and thermal specifications. Confirm RoHS compliance status as per the latest environmental declaration. Check for product termination notices or lifecycle updates directly from Alpha & Omega Semiconductor before finalizing procurement plans.

Selection Notes

Select this component when designing circuits requiring three-channel LED regulation from a single boost stage. Ensure the application input voltage falls between 2.7V and 25V. Verify that the required LED forward voltage does not exceed the 40V output limit. Consider the 16-QFN package size constraints during PCB layout.

Part Context

This part belongs to the Alpha & Omega Semiconductor PMIC family, specifically categorized under external/internal LED drivers. It serves as a dedicated solution for managing power delivery to liquid crystal displays in consumer electronics, distinguishing itself through integrated boost regulation and multi-channel current control capabilities.

Replacement Considerations

Consult official substitution guides for equivalent 3-channel LED drivers with similar boost topologies. Verify pin compatibility and electrical parameters such as output current and operating voltage ranges before replacing.