Enhanced Product (EP) Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

The ISL6420BMAEP simplifies the implementation of a complete control and protection scheme for a highperformance DC/DC buck converter. It is designed to drive N-Channel MOSFETs in a synchronous rectified buck topology, the ISL6420BMAEP integrates control, output adjustment, monitoring and protection functions into a single package. Additionally, the IC features an external reference voltage tracking mode for externally referenced buck converter applications and DDR termination supplies, as well as a voltage margining mode for system testing in networking DC/DC converter applications.

Features
• Specifications per DSCC VID V62/07640
• Full Mil-Temp Electrical Performance from -55°C to +125°C
• Controlled Baseline with One Wafer Fabrication Site and One Assembly/Test Site
• Full Homogeneous Lot Processing in Wafer Fab
• No Combination of Wafer Fabrication Lots in Assembly
• Full Traceability Through Assembly and Test by Date/Trace Code Assignment
• Enhanced Process Change Notification
• Enhanced Obsolescence Management
• Eliminates Need for Up-Screening a COTS Component
• Operates from 4.5V thru 5.5V and 5.6V thru 28V Inputs
• Excellent Output Voltage Regulation
    - 0.6V Internal Reference
    - ±2.0% Reference Accuracy Over Line and Temperature
• Resistor-Selectable Switching Frequency
    - 100kHz to 1.4MHz
• Voltage Margining and External Reference Tracking Modes
• Output Can Sink or Source Current
• Lossless, Programmable Overcurrent Protection
    - Uses Upper MOSFET’s rDS(ON)
• Programmable Soft-Start
• Drives N-Channel MOSFETs
• Simple Single-Loop Control Design
    - Voltage-Mode PWM Control
• Fast Transient Response
    - High-Bandwidth Error Amplifier
    - Full 0% to 100% Duty Cycle
• Extensive Circuit Protection Functions
    - PGOOD, Overvoltage, Overcurrent, Shutdown
• Diode Emulation during Startup for Pre-Biased Load Applications

Applications
• Power Supplies for Microprocessors/ASICs
    - DSP and Core Processors
    - DDR SDRAM Bus Termination
• Distributed Power Systems
• Externally Referenced Buck Converters