LV5219LG-TLM-E

LED Driver IC Overview

The LV5219LG-TLM-E is a Bi-CMOS integrated circuit designed as an LED driver for cellular phones. It incorporates 17 dedicated LED drivers, including main and sub LCD backlight drivers, tricolor indicators, and flash units, alongside a switching regulator circuit supporting step-up through mode. The device allows precise adjustment of each LED current level via an I2C serial bus interface. Key functional blocks include a PWM switching regulator with short-circuit protection and timer-latch output cut-off for overload conditions. It supports automatic brightness control via sensors and synchronization of ringing tones with tricolor LEDs.

LED Driver IC Feature Summary

• Integrates 17 independent LED drivers and a switching regulator within a single Bi-CMOS IC
• Enables digital current adjustment for all channels through an I2C serial bus interface
• Provides automatic brightness regulation using external sensor inputs
• Includes built-in protection mechanisms such as short-circuit detection and overload cut-off

LED Driver IC Applications

• Cellular phone main LCD backlight illumination
• Sub LCD backlight driving in mobile devices
• Tricolor indicator light control for notifications
• Camera flash LED power management

LED Driver IC Procurement Notes

Verify the specific suffix 'TLM-E' against official onsemi documentation to confirm tape-and-reel packaging and environmental compliance status. Ensure that ordering information matches the exact part number required for your design, as suffixes may indicate variations in package type or material composition. Consult the manufacturer's sales office for availability and lead time details.

LED Driver IC Selection Notes

Select this component for applications requiring high integration of multiple LED sources in space-constrained mobile designs. The I2C interface simplifies system architecture by reducing pin count compared to parallel control methods. Consider the internal switching regulator capabilities when designing power supply rails, ensuring compatibility with the step-up through mode requirements for efficient battery operation.

LED Driver IC Part Context

The LV5219LG series belongs to onsemi's portfolio of signal conditioning and control products, specifically targeting standard product applications in consumer electronics. As a Bi-CMOS IC, it combines analog precision with digital control capabilities, suitable for general electronics equipment like communication devices. This family of drivers addresses the need for compact, energy-efficient lighting solutions in portable handsets.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing PCB footprints and firmware if considering alternative drivers from other manufacturers. Check for equivalent I2C addressability and current drive capabilities before substitution.

LED Driver IC FAQ

How is the LED current adjusted?

Each LED current level can be adjusted over the I2C serial bus interface.

What protection features are included?

The device incorporates a short-circuit protection circuit and a timer-latch type output cut-off circuit in case of overload.