ZL8800ALAFTK

Overview

The ZL8800ALAFTK is a dual-channel, dual-phase digital DC/DC controller from Renesas Electronics Corporation. It operates with input voltages ranging from 4.5V to 14V and supports output voltages between 0.54V and 5.5V. The device features a switching frequency range of 200kHz to 1330kHz and utilizes PMBus communication. Packaged in a 44-lead QFN (7.0 x 7.0 mm) with a height of 0.90mm, it is designed for high-efficiency power applications.

Feature Summary

• Dual channel or dual phase configuration for independent or combined high-current operation
• ChargeMode control for single-cycle transient response without compensation
• PMBus interface for digital control and monitoring
• Integrated nonvolatile memory for parameter storage

Applications

• High-performance server power supplies
• Graphics processing unit (GPU) voltage regulation
• FPGA core voltage regulation
• Telecommunications equipment power systems

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm package markings match the 44-QFN specification. Check RoHS compliance documentation for current manufacturing standards. Validate pinout compatibility with existing board layouts before integration.

Selection Notes

Select this controller for designs requiring dual outputs or interleaved phases. Ensure input voltage stays within 4.5V to 14V limits. Verify thermal management for the QFN package. Consider PMBus host requirements for system integration.

Part Context

Part of the ZL8800 series Digital-DC controllers. Designed for high-density power conversion. Replaces older analog controllers with digital flexibility. Supports complex power sequencing and monitoring functions via serial interfaces.

Replacement Considerations

ZL8800ALBFT7A offers similar functionality with minor package variations. Verify pin-to-pin compatibility and software configuration differences before substitution.