MAX1830
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MAX1830

3A, 1MHz, Low-Voltage, Step-Down Regulators with Synchronous Rectification and Internal Switches

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $5.02
Features
  • ±1.5% Output Accuracy
  • 94% Efficiency
  • Internal PMOS/NMOS Switches
    • 45mΩ/55mΩ On-Resistance at VIN = +4.5V
    • 50mΩ/55mΩ On-Resistance at VIN = +3V
  • Output Voltages
    • +3.3V, +2.5V, or +1.5V Pin Selectable (MAX1831)
    • +2.5V, +1.8V, or +1.5V Pin Selectable (MAX1830)
    • +1.1V to VIN Adjustable (Both Devices)
  • +3V to +5.5V Input Voltage Range
  • 750µA (max) Operating Supply Current
  • <1µA Shutdown Supply Current
  • Programmable Constant-Off-Time Operation
  • Up to 1MHz Switching Frequency
  • Idle Mode Operation at Light Loads
  • Thermal Shutdown
  • Internal Digital Soft-Start Inrush Current Limiting
  • 100% Duty Cycle During Low-Dropout Operation
  • Output Short-Circuit Protection
  • 16-Pin QSOP Package
Additional Details
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The MAX1830/MAX1831 constant-off-time, pulse-width-modulated (PWM) step-down DC-DC converters are ideal for use in 5V and 3.3V to low-voltage conversion necessary in notebook and subnotebook computers. These devices feature internal synchronous rectification for high efficiency and reduced component count. They require no external Schottky diode. The internal 45mΩ PMOS power switch and 55mΩ NMOS synchronous-rectifier switch easily deliver continuous load currents up to 3A. The MAX1830 produces preset +2.5V, +1.8V, or +1.5V output voltage or an adjustable output from +1.1V to VIN. The MAX1831 produces preset +3.3V, +2.5V, and +1.5V output voltages and an adjustable output from +1.1V to VIN. They achieve efficiencies as high as 94%.

The MAX1830/MAX1831 use a unique current-mode, constant-off-time, PWM control scheme, which includes Idle Mode™ to maintain high efficiency during light-load operation. The programmable constant-off-time architecture sets switching frequencies up to 1MHz, allowing the user to optimize performance trade- offs between efficiency, output switching noise, component size, and cost. Both devices are designed for continuous output currents up to 3A, an internal digital soft-start to limit surge currents during startup, a 100% duty cycle mode for low-dropout operation, and a low-power shutdown mode that disconnects the input from the output and reduces supply current below 1µA.The MAX1830/MAX1831 are available in 16-pin QSOP packages.

For similar devices that provide continuous output currents of 1A to 3A, refer to the MAX1644, MAX1623, and MAX1742/MAX1842/MAX1843 data sheets.

Applications

  • 5V or 3.3V to Low-Voltage Conversion
  • Chipset Supplies
  • CPU I/O Supplies
  • Notebook and Subnotebook Computers
Part Models 2
1ku List Price Starting From $5.02

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX1830EEE+
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MAX1830EEE+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

MAX1831EVKIT

Evaluation Kit for the MAX1830, MAX1831

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MAX1831EVKIT

Evaluation Kit for the MAX1830, MAX1831

Evaluation Kit for the MAX1830, MAX1831

Features and Benefits

  • Delivering 3A Output Current
    • 94% Efficiency
  • Synchronous Rectifier Improves Efficiency
  • Output Voltage Preset to 1.8V
  • 1.5V, 1.8V, or 2.5V Selectable
    • 1.1V to VIN Adjustable
  • 3V to 5.5V Input Voltage Range
  • No External Schottky Diode Required
  • Less than 1µA (typ) IC Shutdown Current
  • Surface-Mount Construction
  • Fully Assembled and Tested

Product Detail

The MAX1830 evaluation kit (EV kit) provides a 1.8V output from a 3V to 5.5V input voltage source. It delivers up to 3A output current with a 94% (max) efficiency. The MAX1830 EV kit includes the MAX1830 step-down switching regulator with an internal synchronous rectifier to increase efficiency and reduce the number of external components. The resistor-programmable fixed-off-time, current-mode architecture allows an optimum response to load and line transients. This EV kit, as configured, operates at approximately 550kHz from 3.3V inputs and 770kHz from 5V inputs.

The MAX1830 EV kit can be configured to produce a preset output voltage of 1.5V, 1.8V, 2.5V, or is feedback adjustable from 1.1V to VIN.

This EV kit can also be used to evaluate the MAX1831 with preset output voltages of 1.5V, 2.5V, and 3.3V, or adjustable output voltage from 1.1V to VIN.

Applications

  • 5V or 3.3V to Low-Voltage Conversion
  • Chipset Supplies
  • CPU I/O Supplies
  • Notebook and Subnotebook Computers

MAX1830EVKIT

Evaluation Kit for the MAX1830, MAX1831

zoom

MAX1830EVKIT

Evaluation Kit for the MAX1830, MAX1831

Evaluation Kit for the MAX1830, MAX1831

Features and Benefits

  • Delivering 3A Output Current
    • 94% Efficiency
  • Synchronous Rectifier Improves Efficiency
  • Output Voltage Preset to 1.8V
  • 1.5V, 1.8V, or 2.5V Selectable
    • 1.1V to VIN Adjustable
  • 3V to 5.5V Input Voltage Range
  • No External Schottky Diode Required
  • Less than 1µA (typ) IC Shutdown Current
  • Surface-Mount Construction
  • Fully Assembled and Tested

Product Detail

The MAX1830 evaluation kit (EV kit) provides a 1.8V output from a 3V to 5.5V input voltage source. It delivers up to 3A output current with a 94% (max) efficiency. The MAX1830 EV kit includes the MAX1830 step-down switching regulator with an internal synchronous rectifier to increase efficiency and reduce the number of external components. The resistor-programmable fixed-off-time, current-mode architecture allows an optimum response to load and line transients. This EV kit, as configured, operates at approximately 550kHz from 3.3V inputs and 770kHz from 5V inputs.

The MAX1830 EV kit can be configured to produce a preset output voltage of 1.5V, 1.8V, 2.5V, or is feedback adjustable from 1.1V to VIN.

This EV kit can also be used to evaluate the MAX1831 with preset output voltages of 1.5V, 2.5V, and 3.3V, or adjustable output voltage from 1.1V to VIN.

Applications

  • 5V or 3.3V to Low-Voltage Conversion
  • Chipset Supplies
  • CPU I/O Supplies
  • Notebook and Subnotebook Computers

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