Maxim Integrated Switching Regulator, Surface Mount, 4.75 → 5.25V dc Output Voltage, 4.5 → 60V dc Input

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
Reduces 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 2.5A Over Temperature
100kHz to 2.2MHz Adjustable Frequency with External Synchronization
MAX17503S Allows Higher Frequency of Operation
Available in a 20-Pin, 4mm x 4mm TQFN Package
Reduces Power Dissipation
Peak Efficiency > 90%
PFM and DCM Modes for High Light-Load Efficiency
Shutdown Current = 2.8μA (typ)
Operates Reliably
Hiccup-Mode Current Limit and Autoretry Startup
Built-In Output-Voltage Monitoring (Open-Drain Active-Low RESET Pin)
Resistor-Programmable Threshold
Adjustable Soft-Start and Prebiased Power-Up
High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range
Applications
Base Station Power Supplies
Distributed Supply Regulation
General-Purpose Point-of-Load
High-Voltage Single-Board Systems
Industrial Power Supplies
Wall Transformer Regulation

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