LM2753SD/NOPB

Overview

The LM2753SD/NOPB is a high-power switched capacitor voltage converter designed for LED lighting applications. It operates within an input voltage range of 3 V to 5.5 V and provides a regulated output voltage between 4.75 V and 5.25 V. The device delivers up to 400 mA of flash current through a single channel using a boost topology with an internal switch. Operating at a switching frequency of 725 kHz, it supports PWM dimming control. The component is housed in a 10-WFDFN (WSON-10) package with exposed pad and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a high-efficiency switched capacitor charge pump topology for compact power conversion
• Provides precise constant current regulation suitable for driving camera flash LEDs
• Supports digital pulse-width modulation (PWM) dimming for brightness control

Applications

• Camera flash drivers in mobile devices
• LED illumination systems requiring regulated current sources
• Portable electronic devices utilizing single-cell battery inputs

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm pinout compatibility and RoHS status. Ensure the ordering part number matches the required tape and reel or cut tape configuration. Confirm that the WSON-10 package dimensions align with the target PCB footprint design constraints before finalizing procurement.

Selection Notes

Select this component when designing circuits that require a compact solution for driving high-current LEDs from a single lithium-ion cell. The fixed switching frequency simplifies external component selection compared to variable frequency alternatives. Consider the thermal performance of the exposed pad design for efficient heat dissipation in space-constrained mobile applications.

Part Context

This device belongs to the LM2753 series of LED driver ICs manufactured by Texas Instruments. It is specifically engineered for portable electronics where size and efficiency are critical. The series utilizes advanced switched capacitor technology to step up voltage while maintaining tight regulation for consistent LED brightness.

Replacement Considerations

Check for direct cross-reference part numbers listed in the manufacturer's obsolescence notices or replacement guides. Verify that any substitute maintains the same 10-WFDFN footprint and electrical characteristics to ensure board-level compatibility without redesign.

FAQ

What is the maximum output current capability of the LM2753SD/NOPB?

The device is rated to deliver up to 400 mA of output current, primarily intended for flash LED applications.

Does the LM2753 support analog dimming?

No, the datasheet specifies that the device supports PWM (Pulse Width Modulation) dimming for controlling LED brightness.