MAX17504ATP+T

The MAX17504/MAX17504S high-efficiency, high-voltage, synchronously rectified step-down converter with dual integrated MOSFETs operates over a 4.5V to 60V input. It delivers up to 3.5A and 0.9V to 90% VIN output voltage. Built-in compensation across the output voltage range eliminates the need for external components. The feedback (FB) regulation accuracy over -40°C to +125°C is ±1.1%. The device is available in a compact (5mm x 5mm) TQFN lead (Pb)-free package with an exposed pad. Simulation models are available.

Applications

• Industrial Power Supplies
• Distributed Supply Regulation
• Base Station Power Supplies
• Wall Transformer Regulation
• High-Voltage Single-Board Systems
• General-Purpose Point-of-Load

Key features

• Eliminates External Components and Reduces Total Cost
• No Schottky-Synchronous Operation for High Efficiency and Reduced Cost
• Internal compensation for Stable Operation at Any Output Voltage
• All Ceramic Capacitor Solution: Ultra-Compact Layout with as Few as Eight External Components
• Reduce Number of DC-DC Regulators to Stock
• Wide 4.5V to 60V Input Voltage Range
• 0.9V to 90% VIN Output Voltage
• Delivers Up to 3.5A Over Temperature
• 100kHz to 2.2MHz Adjustable Frequency with External Synchronization
• MAX17504S Allows Higher Frequency Of Operation
• Available in a 20-Pin, 5mm x 5mm TQFN Package
• Reduce Power Dissipation
• Peak Efficiency >90%
• PFM and DCM Modes for High Light-Load Efficiency
• Shutdown Current = 2.8μA (typ)
• Operate Reliably
• Hiccup-Mode Current Limit and Autoretry Startup
• Built-In Output Voltage Monitoring—(Open-Drain RESET Pin)
• Resistor Programmable EN/UVLO Threshold
• Adjustable Soft-Start and Pre-Biased Power-Up
• High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range