MAX1951
1MHz, All-Ceramic, 2.6V to 5.5V Input, 2A PWM Step-Down DC-to-DC Regulators
1MHz, All-Ceramic, 2.6V to 5.5V Input, 2A PWM Step-Down DC-DC Regulators Require Only 10µF Ceramic Capacitor
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Overview
Features and Benefits
- Compact 0.385in² Circuit Footprint
- 10µF Ceramic Input and Output Capacitors, 2µH Inductor for 1.5A Output
- Efficiency Up to 94%
- 1% Output Accuracy Over Load, Line, and Temperature (MAX1951, Up to 1.5A)
- Guaranteed 2A Output Current
- Operate from 2.6V to 5.5V Supply
- Adjustable Output from 0.8V to VIN (MAX1951)
- Preset Output of 1.8V (1.5% Accuracy) (MAX1952)
- Internal Digital Soft-Soft
- Short-Circuit and Thermal-Overload Protection
Product Details
The MAX1951/MAX1952 high-efficiency, DC-to-DC step-down switching regulators deliver up to 2A of output current. The devices operate from an input voltage range of 2.6V to 5.5V and provide an output voltage from 0.8V to VIN, making the MAX1951/MAX1952 ideal for on-board postregulation applications. The MAX1951 total output error is less than 1% over load, line, and temperature.
The MAX1951/MAX1952 operate at a fixed frequency of 1MHz with an efficiency of up to 94%. The high operating frequency minimizes the size of external components. Internal soft-start control circuitry reduces inrush current. Short-circuit and thermal-overload protection improve design reliability.
The MAX1951 provides an adjustable output from 0.8V to VIN, whereas the MAX1952 has a preset output of 1.8V. Both devices are available in a space-saving 8-pin SO package.
Applications
- ASIC/DSP/µP/FPGA Core and I/O Voltages
- Cellular Base Stations
- Networking and Telecommunications
- Set-Top Boxes
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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MAX1951 Reliability Data1/12/2023PDF92K
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Power-Supply Solutions for Xilinx FPGAs4/24/2012
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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MAX1951 Discussions
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