LM3501TLX-21/NOPB

LED Driver IC Overview

The LM3501TLX-21/NOPB is a synchronous step-up DC/DC converter designed for white LED applications. It operates with an input voltage range of 2.7 V to 7 V and provides a fixed output voltage of 21 V. The device supports a switch current of 640 mA and functions at a frequency of 1 MHz. Packaged in an 8-pin DSBGA, it integrates dimming control capabilities within a miniature footprint suitable for portable electronics.

LED Driver IC Feature Summary

• Synchronous boost topology for high efficiency
• Integrated PWM dimming control interface
• Fixed 21 V output configuration
• Compact 8-DSBGA package design

LED Driver IC Applications

• White LED backlighting drivers
• Portable electronic display systems
• Handheld device illumination circuits

LED Driver IC Procurement Notes

Verify the specific suffix '21' confirms the fixed 21 V output requirement. Ensure the DSBGA-8 package matches the PCB footprint. Confirm RoHS compliance status through official manufacturer documentation before finalizing component selection for production.

LED Driver IC Selection Notes

Select this component when a fixed 21 V rail is required for LED strings. The 1 MHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Evaluate thermal performance within the small DSBGA package for the intended load current.

LED Driver IC Part Context

This part belongs to the Texas Instruments LM3501 series of synchronous step-up converters. It is specifically optimized for driving white LEDs in portable devices. The series offers various output voltage options to suit different LED string configurations.

LED Driver IC Replacement Considerations

LM3501TLX-16/NOPB provides a 16 V output option. LM3500TLX-21/NOPB is a non-synchronous alternative with similar voltage specifications but different internal architecture.