MAX17521

60V, 1A, Dual-Output, High-Efficiency, Synchronous Step-Down DC-DC Converter

Industry's First 60V, 1A Dual Step-Down DC-DC Converter with Integrated MOSFETs


Please check latest availability status for a specific part variant.

Description

The MAX17521 dual-output, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input. The converter can deliver up to 1A at each output. Each output is programmable from 0.9V to 92%VIN. The feedback voltage regulation accuracy over -40°C to +125°C is ±1.7%.

The MAX17521 uses peak-current-mode control. Each output can be operated in the pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control schemes.

The MAX17521 is available in a 24-pin (4mm x 5mm) TQFN package. Simulation models are available.
MAX17521: Block Diagram MAX17521: Block Diagram Enlarge+

Key Features

  • Reduces External Components and Total Cost
    • No Schottky—Synchronous Operation
    • All-Ceramic Capacitors, Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4.5V to 60V Input
    • Each Output Adjustable From 0.9V to 92%VIN
    • Pin-Selectable 560kHz or 300kHz Switching Frequency
    • Independent Input Voltage Pin for Each Output
  • Reduces Power Dissipation
    • Peak Efficiency > 90%
    • PFM Mode Enables Enhanced Light-Load Efficiency
    • 1μA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup Mode Overload Protection
    • Adjustable Soft-Start Pin for Each Output
    • Built-In Output Voltage Monitoring with Active-Low RESET for Each Output
    • Adjustable EN/UVLO Threshold for Each Output
    • Monotonic Startup Into Prebiased Load
    • Overtemperature Protection
    • High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range

Applications/Uses

  • CPU, DSP, or FPGA Power
  • Distributed Supply Regulation
  • General-Purpose Point of Load
  • Industrial Control Power Supplies
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX17521 4.5600.955Resistor1InternalYes2
300
560
EE-Sim
TQFN-CU/24
$3.10 @1k
See All Step-Down Switching Regulators (389)
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.


MAX17521EVKIT: Evaluation Kit for MAX17521

Quality and Environmental Data

Request Reliability Report for: MAX17521 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • EE-Sim: Design & Simulate MAX17521
  • MAX17521 SIMPLIS Schematic
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    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 >

     
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