LM2753SD

Overview

The LM2753SD is a high-power switched-capacitor voltage converter and flash LED driver manufactured by Texas Instruments. It utilizes a charge pump topology to drive a single output channel with a peak current of 400 mA for flash applications. The device operates within an input voltage range of 3 V to 5.5 V and delivers a regulated output voltage between 4.75 V and 5.25 V. It supports PWM dimming control and functions at a switching frequency of 725 kHz. The component is housed in a 10-SON (3x3) surface-mount package and is rated for operation across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a switched-capacitor doubler for efficient voltage conversion without external inductors
• Provides precise regulation for driving high-power flash LEDs with pulsed currents
• Supports digital PWM dimming control for brightness adjustment

Applications

• Camera flash systems
• Mobile device illumination
• Compact electronic lighting modules

Procurement Notes

Verify the specific ordering suffix, such as NOPB or SDX, against the manufacturer's official documentation to ensure compliance with RoHS standards and packaging requirements. Confirm that the requested variant matches the exact pinout and thermal characteristics defined in the datasheet. Cross-reference the part number with authorized distributors to validate authenticity and availability status before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring a compact, inductor-free solution for driving high-current flash LEDs from low-voltage sources. Ensure the application demands a single-channel output capable of handling peak currents up to 400 mA. Verify that the system architecture can accommodate the 725 kHz switching frequency and that the available PCB space fits the 10-SON package dimensions.

Part Context

The LM2753 belongs to a family of high-power switched-capacitor voltage converters designed specifically for portable electronics. It addresses the need for efficient power management in space-constrained devices where traditional inductive boost converters are too large. This series enables extended battery life while providing the necessary voltage headroom for bright LED flashes in mobile communication devices.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.