SC508AULTRT

Overview

The SC508AULTRT is a synchronous EcoSpeed buck regulator manufactured by Semtech. It operates with a fixed switching frequency of 1 MHz and provides a single output capable of delivering up to 200 mA at 5 V. The device functions within an input voltage range of 4.5 V to 5.5 V, consuming 13 mA of quiescent current. It supports an operating temperature range from -40°C to +85°C and utilizes an MLPQ-UT-20 package for surface mount installation.

Feature Summary

• Synchronous EcoSpeed buck topology for efficient power conversion
• Integrated programmable LDO functionality
• High-speed switching capability with defined rise and fall times

Applications

• HV DC-DC buck control circuits
• Portable electronic devices requiring regulated 5V supply
• Embedded systems with limited power budgets

Procurement Notes

Verify the specific ordering suffix and package variant against the official Semtech datasheet before procurement. Confirm that the MLPQ-UT-20 footprint matches your PCB layout requirements. Ensure compatibility with the intended input voltage range of 4.5 V to 5.5 V for your specific application design.

Selection Notes

Select this component when a compact synchronous buck solution is required for low-power applications. The 1 MHz switching frequency allows for smaller external inductors and capacitors compared to lower-frequency alternatives. Consider the 200 mA output limit and 5 V fixed output when designing the load circuitry.

Part Context

This part belongs to the SC508 series of switch controllers from Semtech. It is categorized under PMIC - Power Management ICs and specifically Voltage Mode PWM Controllers. The series focuses on providing efficient power regulation in small form factors suitable for modern consumer electronics.

Replacement Considerations

Consult the official Semtech documentation for verified substitute part numbers. Cross-reference pinouts and electrical specifications carefully if considering alternative regulators from other manufacturers.