SC623AULTRT

Overview

The SC623AULTRT is a high-efficiency charge pump LED driver utilizing mAhXLife technology, optimized for single-cell Li-ion battery applications. It features an input voltage range of 3.0V to 5.5V and supports 1x, 1.5x, and 2x charge pump modes at a frequency of 250kHz. The device includes four programmable current sinks with 32 steps ranging from 0.5mA to 25mA. It provides a maximum flash LED current of 400mA and a continuous spotlight current of 250mA. The IC incorporates a SemWire single-wire interface supporting up to 75kbit/s and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a charge pump with multiple conversion modes for efficient power management in single-cell battery systems.
• Provides precise backlight current matching and accuracy with programmable fade-in and fade-out capabilities.
• Includes an external flash control pin for synchronization with camera systems and optional flash timeout functionality.
• Features ultra-low shutdown current and automatic sleep mode to minimize power consumption when LEDs are off.

Applications

• Cellular phone backlighting and flash
• PDA backlighting and flash

Procurement Notes

Verify the specific suffix and package type against official Semtech documentation to ensure compatibility with design requirements. Confirm RoHS and WEEE compliance status directly from the manufacturer's datasheet or product change notices. Check for any recent updates regarding lead times or availability through authorized distributors. Ensure the ordering quantity aligns with standard tape and reel packaging specifications provided by the supplier.

Selection Notes

Select this component for applications requiring high-efficiency LED driving from a single Li-ion cell. Consider the SemWire interface if a single-wire control scheme is preferred over I2C. Evaluate the 400mA flash capability against peak lighting requirements. Ensure the operating temperature range meets the environmental conditions of the target device. Verify that the MLPQ-UT-20 package dimensions fit the available PCB space.

Part Context

The SC623AULTRT belongs to the SC6 series of LED drivers from Semtech. This series focuses on mobile and portable electronics, offering integrated solutions for backlighting and flash functions. The device combines charge pump technology with low-power management features to extend battery life in compact devices.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure any replacement maintains compatible voltage ranges, current capabilities, and interface protocols.

FAQ

What is the maximum flash current supported by the SC623AULTRT?

The device supports a maximum flash LED current of 400mA.

How does the SC623AULTRT manage power consumption in standby?

It features an automatic sleep mode with an IQ of 100μA and a low shutdown current of 0.1μA (typical).

What interface is used for controlling the SC623AULTRT?

The device uses the SemWire single-wire interface, which supports data rates up to 75kbit/s.