MAX1951
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MAX1951

1MHz, All-Ceramic, 2.6V to 5.5V Input, 2A PWM Step-Down DC-to-DC Regulators

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1MHz, All-Ceramic, 2.6V to 5.5V Input, 2A PWM Step-Down DC-DC Regulators Require Only 10µF Ceramic Capacitor

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $3.05
Features
  • 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
Additional Details
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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
Part Models 2
1ku List Price Starting From $3.05

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX1951ESA+
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MAX1951ESA+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX1951EVKIT

Evaluation Kit for the MAX1951, MAX1952

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MAX1951EVKIT

Evaluation Kit for the MAX1951, MAX1952

Evaluation Kit for the MAX1951, MAX1952

Features and Benefits

  • 2.6V to 5.5V Input Range
  • Output Voltage
    • Adjustable 0.8V to VIN (MAX1951)
    • Fixed 1.8V (MAX1952)
  • 1.5A Output Current
  • Tiny Circuit Footprint: 0.55 x 0.7in2
  • Low-Profile Components: < 3mm
  • All Ceramic Design
  • Fixed 1MHz Switching Frequency
  • No External Schottky Diode Required
  • Surface-Mount Construction
  • Fully Assembled and Tested

Product Detail

The MAX1951 evaluation kit (EV kit) provides a 1.5V output voltage from a 2.6V to 5.5V input source.The output voltage can be adjusted from 0.8V to VIN. The MAX1951 delivers up to 1.5A output current. The MAX1951 is a fixed-frequency, pulse-width modulated (PWM) step-down switching regulator with internal synchronous-rectifier. Operation at 1MHz minimizes external components.

The MAX1951 EV kit can also be used to evaluate other output voltages by changing the feedback resistors R2 and R3. The EV kit can also be used to evaluate the MAX1952, which is a 1.5A PWM step-down switching regulator with a 1.8V fixed output voltage.

Applications

  • ASIC/DSP/µP/FPGA Core and I/O Voltages
  • Cell Phone Base Stations
  • Networking and Telecommunications
  • Set-Top Boxes

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