EL7516IY

Overview

The EL7516IY is a monolithic step-down switching regulator manufactured by Intersil, now part of Renesas Electronics. It integrates power FETs and control circuitry into a compact MSOP-10 package. The device operates with an input voltage range from 2.5V to 5.5V, accommodating standard 3.3V, 5V, or Li-Ion battery supplies. It delivers up to 1A of output current with an adjustable output voltage from 0.8V to the input rail. Key electrical parameters include a typical switching frequency of 1.5MHz, a maximum duty cycle of 95%, and a quiescent supply current of 4mA during operation. Shutdown current is less than 1µA.

Feature Summary

• Integrates synchronous power FETs for high efficiency in a small footprint
• Fixed internal compensation simplifies external component selection
• Includes thermal shutdown and short-circuit protection mechanisms
• Supports low-power standby mode with ultra-low shutdown current

Applications

• Portable electronics powered by single-cell lithium-ion batteries
• Point-of-load regulation for digital signal processors
• Power supply stages for embedded microcontroller systems
• Battery-operated instrumentation requiring efficient DC-DC conversion

Procurement Notes

Verify current availability status as this component may be subject to discontinuation notices or limited production runs. Confirm RoHS compliance details through official manufacturer documentation prior to integration. Ensure that the specific suffix matches required packaging formats such as tape and reel quantities if applicable for automated assembly processes.

Selection Notes

Select this regulator when designing space-constrained applications requiring a 1A output from low-voltage sources. Consider the 1.5MHz switching frequency for smaller passive components compared to lower-frequency alternatives. Evaluate thermal performance within the MSOP-10 package against expected ambient temperatures and load currents to ensure reliable operation without additional heatsinking.

Part Context

This component belongs to the EL75xx series of monolithic step-down regulators designed by Intersil. These devices are characterized by their integrated power switches and fixed-frequency PWM control. The series targets portable applications where size, efficiency, and simplicity are critical design constraints. Intersil was acquired by Renesas Electronics, which continues to support these legacy power management products.

Replacement Considerations

Check for direct pin-compatible upgrades within the Renesas portfolio. Verify that any substitute maintains the 1A current rating and 1.5MHz switching frequency. Ensure thermal characteristics and control loop stability remain compatible with existing board layouts.