LM2795TL

Overview

The LM2795TL is a four-output DC-DC regulator and LED driver IC manufactured by Texas Instruments. It utilizes a switched capacitor (charge pump) topology to provide current-regulated power for white LEDs. The device supports both analog and PWM dimming control methods. It operates with an input voltage range of 2.7V to 5.5V and features an internal switching frequency of 515kHz. Each output channel provides a regulated current of 20mA, with an output voltage capability up to 3.8V. The component is housed in a 14-DSBGA package and is rated for an ambient operating temperature range of -30°C to 85°C.

Feature Summary

• Integrates a four-channel switched capacitor charge pump topology for efficient LED powering
• Supports dual-mode brightness control via both analog voltage and PWM signals
• Contains internal power switches to minimize external component count
• Provides regulated constant current output for stable LED performance

Applications

• LCD backlight driving for portable electronic devices
• White LED illumination circuits in mobile handsets
• Current regulation for small display arrays

Procurement Notes

Verify the specific suffix and tape-and-reel quantity requirements against the official datasheet before ordering. Confirm that the 14-DSBGA package dimensions match the target PCB footprint. Ensure the design accounts for the specified thermal characteristics within the -30°C to 85°C operating range. Check for any RoHS compliance status updates or end-of-life notifications from the manufacturer prior to finalizing procurement plans.

Selection Notes

Select this component when a compact, four-channel LED driver is required for low-voltage systems. It is suitable for designs needing simultaneous analog and PWM dimming capabilities without external inductors. Consider the 515kHz switching frequency for EMI management and the 20mA per-channel limit for appropriate LED string configurations. Evaluate the DSBGA package size constraints relative to available board space.

Part Context

The LM2795TL belongs to the LM2794/LM2795 family of current-regulated switched capacitor LED supplies from Texas Instruments. These devices are designed specifically for driving white LEDs in portable applications where efficiency and small form factor are critical. The family shares similar functional architectures but may vary in output count or packaging options.

Replacement Considerations

LM2794TL/NOPB is documented as a parameter-equivalent substitute.