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Product Detailed Parameters
- Description：IC REG CTRLR BUCK PMBUS 44QFN
- Series：Digital-DC™
- Mfr：Renesas Electronics Corporation
- Package：Tape & Reel (TR)
- Output Type：PWM Signal
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：2
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：4.5V ~ 14V
- Frequency - Switching：200kHz ~ 1.33MHz
- Duty Cycle (Max)：-
- Synchronous Rectifier：No
- Clock Sync：Yes
- Serial Interfaces：PMBus
- Control Features：Current Limit, Enable, Power Good, Tracking
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：44-VFQFN Exposed Pad
- Supplier Device Package：44-QFN (7x7)
- Grade：-
- Qualification：-
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Overview
The ZL8802 is a dual-channel, dual-phase digital DC/DC controller featuring ChargeMode control for compensation-free stability. It supports output voltages from 0.54V to 5.5V and input voltages from 4.5V to 14V. The device offers 1% output voltage accuracy and switching frequencies between 200kHz and 1.33MHz. It utilizes a proprietary single-wire DDC serial bus for communication and configuration.
Feature Summary
- ChargeMode control provides fast transient response and output stability without external compensation components.
- Proprietary single-wire DDC serial bus enables voltage sequencing and fault spreading with other digital power ICs.
- Integrated nonvolatile memory stores operating parameters and fault events for persistent configuration.
Applications
- High-current applications requiring scalable multi-phase operation
- Systems needing precise voltage sequencing via digital interface
- Designs minimizing output capacitance for space and cost savings
Procurement Notes
Verify the specific suffix ALAFT against the manufacturer's current datasheet to confirm package type and temperature range. Confirm availability status as product lines may undergo lifecycle changes. Ensure compatibility with required PMBus or DDC protocols for system integration.
Selection Notes
Select this controller for designs requiring independent dual outputs or combined multi-phase configurations up to eight phases using multiple devices. It is suitable for applications demanding high accuracy over line, load, and temperature variations without analog compensation complexity.
Part Context
The ZL8802 belongs to the Intersil digital power controller family, now part of Renesas Electronics. It complements other digital power ICs by offering advanced modulation techniques and digital control interfaces for modern power management systems.
Replacement Considerations
The ZL8801 is a related single-phase variant within the same family. Verify phase requirements and pinout compatibility before substitution. Consult official documentation for any functional differences in multi-device scaling capabilities.
