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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 ZL8800ALBFTK is a dual channel/dual phase PMBus ChargeMode digital DC/DC controller in a 44-lead QFN package (7.0 x 7.0 mm). It operates from an input voltage range of 4.5V to 14V, supporting output voltages from 0.54V to 5.5V with a maximum output current of 40A per rail. The device features a switching frequency range of 200kHz to 1330kHz and achieves peak efficiency of 94%. It includes integrated power management, quiescent current of 26mA, and supports temperatures from -40°C to +85°C.
Feature Summary
- ChargeMode control enables single-cycle transient response without compensation
- Proprietary DDC serial bus facilitates inter-IC communication and phase balancing
- Dual independent outputs or combined dual-phase high-current operation
- Comprehensive fault protection including UV/OV and thermal monitoring
Applications
- High-density server power supplies
- Telecommunications infrastructure equipment
- Industrial automation systems
- Network switches and routers
Procurement Notes
Verify component authenticity through authorized channels due to discontinuation status. Confirm RoHS compliance and MSL level 2 handling requirements. Check for valid replacement part numbers as the original manufacturer may have ceased production. Ensure storage conditions meet moisture sensitivity standards before assembly.
Selection Notes
Select this controller for applications requiring fast transient response and minimal output capacitance. Consider the dual-phase capability for higher current demands. Evaluate compatibility with existing PMBus infrastructure. Verify input voltage ranges match system specifications. Assess thermal performance within the specified operating temperature range.
Part Context
Part of the ZL8800 series digital power controllers designed for high-performance DC/DC conversion. Utilizes Intersil's proprietary ChargeMode technology for stability without external compensation components. Integrates advanced monitoring and protection features typical of modern digital power management solutions.
Replacement Considerations
Consult official documentation for confirmed substitute part numbers. Verify pin-to-pin compatibility and electrical parameter equivalence. Review updated feature sets and packaging options in successor models.
