MAX17524

4.5V to 60V, Dual 3A, High-Efficiency, Synchronous Step-Down DC-DC Converter

Industry's First 60V, 3A Dual Synchronous Step-Down DC-DC Converter


Please check latest availability status for a specific part variant.

Description

The MAX17524 dual 3A, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated high-side MOSFETs operates over an input-voltage range of 4.5V to 60V. The device can deliver up to 3A on each output and generates output voltages from 0.9V up to 90% of VIN. This device features internal compensation.

The MAX17524 uses peak current-mode control, and can be operated in pulse-width modulation (PWM), pulse-frequency modulation (PFM), and discontinuous-conduction mode (DCM) to enable high efficiency under light-load conditions.

The feedback-voltage regulation accuracy is accurate to within ±1.4% over -40°C to +125°C. The device is available in a 32-pin (5mm x 5mm) Thin QFN (TQFN) package. Simulation models are available.

MAX17524: Functional Diagram MAX17524: Functional Diagram Enlarge+

Key Features

  • Reduces External Components and Total Cost
    • No Schottky - Synchronous Operation
    • Internal Compensation Components
    • All-Ceramic Capacitors, Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4.5V to 60V Input
    • Adjustable Output Range from 0.9V up to 90% of VIN
    • Delivers up to 3A on Each Output Over the Temperature Range
    • 100kHz to 1.1MHz Adjustable Frequency with External Clock Synchronization
    • Available in a 32-Pin, 5mm x 5mm TQFN Package
  • Independent Input-Voltage Pins for Each Output
  • Reduces Power Dissipation
    • Peak Efficiency of 94.4%
    • PFM and DCM Modes Enable Enhanced Light-Load Efficiency
    • Auxiliary Bootstrap Supply (EXTVCC) for Improved Efficiency
    • 5.2μA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup-Mode Overload Protection
    • Independent Adjustable Soft-Start Pin and Programmable EN/UVLO Pin for Each Output
    • Monotonic Startup with Prebiased Output Voltage
    • Built-in Independent Output-Voltage Monitoring with Active-Low RESET for Each Output
    • Overtemperature Protection
    • High Industrial -40°C to +125°C Ambient Operating Temperature Range / -40°C to +150°C Junction

Applications/Uses

  • Base Station Power Supplies
  • Distributed Supply Regulation
  • General-Purpose Point-of-Load
  • High-Voltage Single-Board Systems
  • Industrial Control Power Supplies
  • Wall Transformer Regulation

See parametric specs for Step-Down Switching Regulators (408)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX17524 4.5600.954Resistor3InternalYesYes2
100
1000
EE-Sim
TQFN-CU/32
$3.88 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX17524EVKIT: Evaluation Kit for the MAX17524 Dual-Output Voltage 3.3V and 5V Application

Tools & Models

  • EE-Sim: Design & Simulate MAX17524
  • MAX17524 SIMPLIS Schematic
  • Request Reliability Report for: MAX17524 
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

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    Type ID Title
    Evaluation Board9694MAX17524EVKIT Evaluation Kit for the MAX17524 Dual-Output Voltage 3.3V and 5V Application