Renesas ZL8800ALAFTK

降压降压4.5V ~ 14V

Overview

The is a dual output or dual phase digital DC/DC controller. Each output can operate independently or be used together in a dual phase configuration for high current applications. The ZL8800 supports a wide range of output voltages to 5.5V) operating from input voltages as low to 14V. With the fully digital ChargeModeTM Control the ZL8800 will respond to a transient load step within a single switching cycle. This unique compensation-free modulation technique allows designs to meet transient specifications with minimum output capacitance thus saving cost and board space. Intersil's proprietary single wire DDC (Digital-DC) serial bus enables the ZL8800 to communicate between other Zilker ICs. By using the DDC, the ZL8800 achieves complex functions such as inter-IC phase current balancing, sequencing, and fault spreading, eliminating complicated power supply managers with numerous external discrete components. The ZL8800 features cycle by cycle output overcurrent protection. The input voltage, output voltages and DrMOS/MOSFET driver supply voltages are overvoltage and overvoltage protected. Two external and one internal temperature sensor are available for temperature monitoring, one of which is used for under and over-temperature protection. A snapshot parametric capture feature allows users to take a snapshot of operating and fault data during normal or fault conditions. Integrated Low Drop-Out (LDO) regulators allow the to be operated from a single input supply eliminating the need for additional linear regulators. The LDO output can be used to power external drivers or DrMOS devices. With full PMBusTM compliance the ZL8800 is capable of measuring and reporting input voltage, input current, output voltage, output current as well as the device's internal temperature, 2 external temperatures and an auxiliary voltage input.

PMBusTM Command Summary. 25 PMBusTM Data Formats. 28 PMBusTM Command Detail. 29 Revision History. 81 About Intersil. 81 Package Outline Drawing. 82

Features

Tape & Reel (TR) Package
PWM Signal Output Type
Positive Output Configuration
Buck Topology
2 Number of Outputs
2 Output Phases
4.5V ~ 14V Voltage - Supply (Vcc/Vdd)
200kHz ~ 1.33MHz Frequency - Switching
No Synchronous Rectifier
Yes Clock Sync
PMBus Serial Interfaces
Current Limit, Enable, Power Good, Tracking Control Features
Surface Mount Mounting Type