MAX8757

Interleaved High-Efficiency, Dual Power-Supply Controllers for Notebook Computers

Dual, Step-Down, Interleaved, Fixed-Frequency, Switch-Mode Power-Supply (SMPS) Controllers with Synchronous Rectification for Notebook Computers

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Part Details

  • Fixed Switching Frequency
    • 200kHz, 300kHz, or 500kHz
    • 250kHz, 300kHz, or 400kHz (MAX8756 Only)
  • No Current-Sense Resistor Required
  • 40/60 Optimal Interleaving
  • Reduced Input-Capacitor Requirement
  • Output Voltage Fixed or Adjustable Outputs (Dual Mode™)
    • 3.3V/5V Fixed or 1V to 5.5V Adjustable
    • 1.5V/1.8V Fixed or 1V to 2.3V Adjustable (MAX8756 Only)
  • 4V to 26V Input Range
  • Independently Selectable PWM, Skip, and Low-Noise Mode Operation
  • Soft-Start and Soft-Stop
  • 2V Precision Reference with 0.75% Accuracy
  • Independent Power-Good Outputs
MAX8757
Interleaved High-Efficiency, Dual Power-Supply Controllers for Notebook Computers
MAX8716, MAX8717, MAX8756, MAX8757: Standard Application Circuit
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Hardware Ecosystem

Parts Product Life Cycle Description
Multiple Output Buck Regulators 2
MAX1845 PRODUCTION Dual, High-Efficiency, Step-Down Controller with Accurate Current Limit
MAX1541 PRODUCTION Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator
Product 1
MAX8743 Dual, High-Efficiency, Step-Down Controller with High Impedance in Shutdown
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Evaluation Kits

MAX8716EVKIT

Evaluation Kit for the MAX8716

Features and Benefits

  • +6V to +24V Input Voltage Range
  • Output Voltages
    +3.3V at 5A (Adjustable from +1.0V to +5.5V)
    +5.0V at 5A (Adjustable from +1.0V to +5.5V)
  • 300kHz Switching Frequency
  • Independently Selectable PWM, Skip, and Low- Noise-Mode Operation
  • Independent Power-Good Outputs
  • Low-Profile Components
  • Fully Assembled and Tested
  • Product Details

    The MAX8716 evaluation kit (EV kit) demonstrates the MAX8716's standard application circuit. This dual-PWM synchronous DC-DC converter steps down high-voltage batteries and/or AC adapters, generating main supplies for notebook computers.

    The MAX8716 EV kit provides dual +5V and +3.3V output voltages from +6V to +24V battery input range. It delivers up to 5A output current for the +5V output and 5A for the +3.3V output with 95% efficiency. The EV kit operates at 300kHz switching frequency and has superior line- and load-transient response.

    This EV kit is a fully assembled and tested circuit board. Both outputs are adjustable between +1.0V and +5.5V by changing feedback resistors R19, R20, R21, and R22.

    Applications

    • 2 to 4 Li+ Cell Battery-Powered Devices
    • Main or I/O Power Supplies
    • Notebook and Subnotebook Computers
    • PDAs and Mobile Communicators

    MAX8716EVKIT
    Evaluation Kit for the MAX8716

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