EL7530IYZ

Overview

The EL7530IYZ is a monolithic synchronous step-down switching regulator manufactured by Renesas Electronics Corporation. It integrates power FETs and control circuitry to deliver a regulated output current of 600 mA. The device operates from an input voltage range of 2.5 V to 5.5 V, accommodating standard 3.3 V, 5 V, or single Li-Ion battery supplies. The adjustable output voltage spans from 800 mV to the input voltage level. It utilizes a fixed switching frequency of 1.4 MHz to minimize external component size. The IC is housed in a 10-lead MSOP package with a thermal pad, designed for surface-mount installation.

Feature Summary

• Integrates synchronous rectification with internal power FETs for high efficiency
• Features PWM mode control for stable regulation under varying load conditions
• Includes built-in over-temperature protection to safeguard against thermal overload
• Provides low shutdown current consumption for extended battery life in portable devices

Applications

• Portable instruments and handheld devices
• Li-Ion battery powered equipment
• ASIC, FPGA, and DSP core voltage supplies
• Set-top boxes and consumer electronics

Procurement Notes

Verify the specific suffix configuration when sourcing replacements, as packaging variations exist within the EL7530 family. Confirm RoHS compliance status and moisture sensitivity levels prior to assembly planning. Check for active engineering change notices or product discontinuation announcements from the manufacturer. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component for applications requiring a compact solution with moderate output current capabilities. The 1.4 MHz switching frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Verify that the required output voltage falls within the 800 mV to 5.5 V range. Consider the thermal performance of the MSOP package relative to the expected ambient temperature and PCB copper area for heat dissipation.

Part Context

The EL7530IYZ belongs to the EL7530 series of integrated step-down regulators. This series is characterized by its synchronous design and internal compensation, which simplifies the external component count. The IYZ designation specifically identifies the industrial temperature grade variant packaged in a 10-lead MSOP format. It serves as a power management solution for space-constrained portable electronics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.