MAX1524
alert : Obsolete
searchIcon
cartIcon

MAX1524

Simple SOT23 Boost Controllers

Show More showmore-icon

alert : Obsolete tooltip
alert : Obsolete tooltip
Part Details
Features
  • Simple, Flexible Application Circuit
  • 2-Cell NiMH or Alkaline Operation (MAX1524)
  • Low Quiescent Current (25µA typ)
  • Output Fault Protection and Soft-Start
  • High Efficiency Over 1000:1 IOUT Range
  • Pin-Selectable Maximum Duty Factor
  • Micropower Shutdown Mode
  • Small 6-Pin SOT23 Package
  • No Current-Sense Resistor
Additional Details
show more Icon

The MAX1522/MAX1523/MAX1524 are simple, compact boost controllers designed for a wide range of DC-DC conversion topologies, including step-up, SEPIC, and flyback applications. They are for applications where extremely low cost and small size are top priorities. These devices are designed specifically to provide a simple application circuit and minimize the size and number of external components, making them ideal for PDAs, digital cameras, and other low-cost consumer electronics applications.

These devices use a unique fixed on-time, minimum off-time architecture, which provides excellent efficiency over a wide-range of input/output voltage combinations and load currents. The fixed on-time is pin selectable to either 0.5µs (50% max duty cycle) or 3µs (85% max duty cycle), permitting optimization of external component size and ease of design for a wide range of output voltages.

The MAX1522/MAX1523 operate from a +2.5V to +5.5V input voltage range and are capable of generating a wide range of outputs. The MAX1524 is intended for bootstrapped operation, permitting startup with lower input voltage. All devices have internal soft-start and short-circuit protection to prevent excessive switching current during startup and under output fault conditions. The MAX1522/MAX1524 have a latched fault mode, which shuts down the controller when a short-circuit event occurs, whereas the MAX1523 reenters soft-start mode during output fault conditions. The MAX1522/MAX1523/MAX1524 are available in a space-saving 6-pin SOT23 package.

Applications

  • Industrial +24V and +28V Power Supplies
  • LCD Bias Supplies
  • Low-Cost Battery-Powered Applications
  • Low-Cost, High-Current, or High-Voltage Boost Conversion
  • Low-Cost, Multi-Output Flyback Converters
  • SEPIC Converters

close icon
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 3

MAX1524EVKIT

Evaluation Kit for the MAX1522, MAX1523, MAX1524

zoom

MAX1524EVKIT

Evaluation Kit for the MAX1522, MAX1523, MAX1524

Evaluation Kit for the MAX1522, MAX1523, MAX1524

Features and Benefits

  • Input Voltage
    • +1.5V to +5.5V (Left Side, BOOTSTRAPPED)
    • +2.5V to +5.5V (Right Side, NON-BOOTSTRAPPED)
  • Output Voltage
    • +5V Output up to 1A (Left Side)
    • +12V Output up to 200mA (Right Side)
  • No Current-Sense Resistor
  • Fault-Detection
  • Soft-Start Limits Inrush Current
  • Selectable Maximum Duty Cycle (45% or 80%)
  • Adjustable Output Voltages
  • 1µA (max) Shutdown Current
  • Switching Frequency Up to 1MHz
  • Fully Assembled and Tested

Product Detail

The MAX1522 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that contains two separate step-up switching controller circuits. The first circuit (left side) utilizes the MAX1524, is configured for +5V output, and can deliver up to 1A of current. The MAX1524 supply pin is bootstrapped to the output. The second circuit (right side) utilizes the MAX1522, is configured for +12V output, and can deliver up to 200mA of current with the input voltage as low as +2.7V.

The MAX1522 and MAX1524 feature soft-start and fault-detect. The EV kit allows the user to set the on-time of the N-channel MOSFETs to either 0.5µs or 3µs.

Applications

  • Industrial +24V and +28V Power Supplies
  • LCD Bias Supplies
  • Low-Cost Battery-Powered Applications
  • Low-Cost, High-Current, or High-Voltage Boost Conversion
  • Low-Cost, Multi-Output Flyback Converters
  • SEPIC Converters

MAX1522EVKIT

Evaluation Kit for the MAX1522, MAX1523, MAX1524

zoom

MAX1522EVKIT

Evaluation Kit for the MAX1522, MAX1523, MAX1524

Evaluation Kit for the MAX1522, MAX1523, MAX1524

Features and Benefits

  • Input Voltage
    • +1.5V to +5.5V (Left Side, BOOTSTRAPPED)
    • +2.5V to +5.5V (Right Side, NON-BOOTSTRAPPED)
  • Output Voltage
    • +5V Output up to 1A (Left Side)
    • +12V Output up to 200mA (Right Side)
  • No Current-Sense Resistor
  • Fault-Detection
  • Soft-Start Limits Inrush Current
  • Selectable Maximum Duty Cycle (45% or 80%)
  • Adjustable Output Voltages
  • 1µA (max) Shutdown Current
  • Switching Frequency Up to 1MHz
  • Fully Assembled and Tested

Product Detail

The MAX1522 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that contains two separate step-up switching controller circuits. The first circuit (left side) utilizes the MAX1524, is configured for +5V output, and can deliver up to 1A of current. The MAX1524 supply pin is bootstrapped to the output. The second circuit (right side) utilizes the MAX1522, is configured for +12V output, and can deliver up to 200mA of current with the input voltage as low as +2.7V.

The MAX1522 and MAX1524 feature soft-start and fault-detect. The EV kit allows the user to set the on-time of the N-channel MOSFETs to either 0.5µs or 3µs.

Applications

  • Industrial +24V and +28V Power Supplies
  • LCD Bias Supplies
  • Low-Cost Battery-Powered Applications
  • Low-Cost, High-Current, or High-Voltage Boost Conversion
  • Low-Cost, Multi-Output Flyback Converters
  • SEPIC Converters

MAX1523EVKIT

Evaluation Kit for the MAX1522, MAX1523, MAX1524

zoom

MAX1523EVKIT

Evaluation Kit for the MAX1522, MAX1523, MAX1524

Evaluation Kit for the MAX1522, MAX1523, MAX1524

Features and Benefits

  • Input Voltage
    • +1.5V to +5.5V (Left Side, BOOTSTRAPPED)
    • +2.5V to +5.5V (Right Side, NON-BOOTSTRAPPED)
  • Output Voltage
    • +5V Output up to 1A (Left Side)
    • +12V Output up to 200mA (Right Side)
  • No Current-Sense Resistor
  • Fault-Detection
  • Soft-Start Limits Inrush Current
  • Selectable Maximum Duty Cycle (45% or 80%)
  • Adjustable Output Voltages
  • 1µA (max) Shutdown Current
  • Switching Frequency Up to 1MHz
  • Fully Assembled and Tested

Product Detail

The MAX1522 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that contains two separate step-up switching controller circuits. The first circuit (left side) utilizes the MAX1524, is configured for +5V output, and can deliver up to 1A of current. The MAX1524 supply pin is bootstrapped to the output. The second circuit (right side) utilizes the MAX1522, is configured for +12V output, and can deliver up to 200mA of current with the input voltage as low as +2.7V.

The MAX1522 and MAX1524 feature soft-start and fault-detect. The EV kit allows the user to set the on-time of the N-channel MOSFETs to either 0.5µs or 3µs.

Applications

  • Industrial +24V and +28V Power Supplies
  • LCD Bias Supplies
  • Low-Cost Battery-Powered Applications
  • Low-Cost, High-Current, or High-Voltage Boost Conversion
  • Low-Cost, Multi-Output Flyback Converters
  • SEPIC Converters
Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Recently Viewed