SC600CIMSTRT

Overview

The SC600CIMSTRT is a fractional charge pump LED driver from Semtech's mAhxLife series, designed for battery-operated applications. It operates within an input voltage range of 2.5 V to 6.5 V and provides a regulated output current of 60 mA. The device utilizes a switching capacitor topology with selectable frequencies of 8 kHz, 32 kHz, 262 kHz, or 650 kHz. It features shutdown current below 1 μA and includes short-circuit and over-temperature protection. The component is housed in a 10-lead MSOP package and supports operation temperatures from -40°C to +85°C.

Feature Summary

• Fractional charge pump implementation eliminates the need for inductors, reducing electromagnetic interference and component count.
• Patented low noise mode switching circuitry enables the use of extremely small input and output capacitors.
• Constant output current regulation ensures stable LED brightness across varying input conditions.
• Integrated soft-start function minimizes inrush current during power-up sequences.

Applications

• LED backlighting for cellular phones
• Power supplies for PDAs and handheld computers
• Portable electronic devices and e-books
• Wireless web appliances

Procurement Notes

Verify the specific suffix 'CIMSTR' against the official Semtech datasheet to confirm the exact frequency selection and package variant. Ensure compatibility with the target PCB footprint for the 10-MSOP package. Confirm RoHS compliance status through the manufacturer's latest environmental declaration before finalizing procurement orders.

Selection Notes

Select this component when inductor-less solutions are required to save board space and reduce EMI in portable designs. The 60 mA output current is suitable for driving single or multiple LEDs in series where current regulation is critical. Consider the selectable frequency options to optimize efficiency and external capacitor sizes based on the specific application constraints.

Part Context

The SC600CIMSTRT belongs to the Semtech mAhxLife family of LED drivers. This series focuses on high-efficiency power management for mobile devices using charge pump technology. The part integrates control logic and power switches into a compact surface-mount package, serving as a direct replacement for older discrete LED driver solutions in consumer electronics.

Replacement Considerations

Consult Semtech documentation for cross-reference data. Verify pinout compatibility if substituting with other SC600 variants or competitor charge pumps. Ensure thermal performance matches the original design requirements for the MSOP package.

FAQ

What is the maximum peak efficiency of the SC600CIMSTRT?

The device achieves a peak efficiency of over 90%, which helps extend battery life in portable applications.

How does the SC600CIMSTRT handle fault conditions?

It includes integrated short-circuit and over-temperature protection mechanisms to safeguard the LED load and the IC itself.