EL7532IYZ

Overview

The EL7532IYZ is a synchronous, integrated FET 2A step-down regulator with internal compensation. It operates with an input voltage range from 2.5V to 5.5V, accommodating supplies of 3.3V, 5V, or a single Li-Ion battery source. The output can be externally set from 0.8V to VIN with a resistive divider. The EL7532 features PWM mode control. The operating frequency is typically 1.5MHz. Additional features include a 100ms Power-On-Reset output, <1µA shut-down current and over-temperature protection. The EL7532 is available in the 10-pin MSOP package, making the entire converter occupy less than 0.18 in2of PCB area with components on one side only. The package is specified for operation over the full -40°C to +85°C temperature range.

Feature Summary

• Synchronous integrated FET design for high efficiency
• Internal loop compensation simplifies external component count
• PWM mode control with typical 1.5MHz switching frequency
• Includes 100ms Power-On-Reset output and over-temperature protection

Applications

• PDA and pocket PC computers
• Bar code readers
• ADSL modems
• Portable instruments
• Li-Ion battery powered devices

Procurement Notes

Verify the specific suffix 'IYZ' corresponds to the 10-pin MSOP package variant when sourcing. Confirm RoHS compliance status as some historical records indicate non-compliance for certain revisions. Check for End-of-Life (EOL) notices or Last Time Buy dates, as this component series has faced discontinuation events. Ensure the supplier provides valid traceability documentation for the Renesas/Intersil origin.

Selection Notes

Select this component for designs requiring a compact 2A buck solution with minimal external parts due to internal compensation. It is suitable for applications powered by 3.3V, 5V, or single-cell Li-Ion batteries. Consider the 10-pin MSOP package constraints for PCB layout. Verify that the required output voltage range falls between 0.8V and the input voltage.

Part Context

The EL7532 belongs to the Intersil/Renesas family of monolithic step-down regulators. It shares architectural similarities with the EL7530 and EL7531 but offers higher current capability at 2A compared to the 600mA and 1A variants respectively. All models in this series utilize synchronous rectification and internal compensation to reduce board space requirements.

Replacement Considerations

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