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MAX17536

MAX17536

4.5V to 60V, 4A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation

Industry's First 60V, 4A Internal FET Synchronous Buck Converter

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Overview

Description

The MAX17536 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated high-side MOSFET operates over a 4.5V to 60V input. The converter can deliver up to 4A and generates output voltages from 0.9V up to 0.9 x VIN. The feedback (FB) voltage is accurate to within ±1.4% over -40°C to 125°C.

The MAX17536 uses peak current-mode control. The device can be operated in the pulse-width modulation (PWM), pulse-frequency modulation (PFM), and discontinuous conduction mode (DCM) control schemes.

The device is available in a 20-pin (5mm × 5mm) Thin QFN (TQFN) package. Simulation models are available.

MAX17536: Block Diagram MAX17536: Block Diagram Enlarge+

Key Features

  • Reduces External Components and Total Cost
    • No Schottky-Synchronous Operation
    • Internal Compensation for Any Output Voltage
    • Built-In Soft-Start
    • All-Ceramic Capacitors, Compact Layout
  • Reduce Number of DC-DC Regulators to Stock
    • Wide 4.5V to 60V Input
    • Adjustable 0.9V to 0.9 x VIN Output
    • 100kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization
  • Reduces Power Dissipation
    • Peak Efficiency > 95%
    • PFM/DCM Modes Enables Enhanced Light-Load Efficiency
    • Auxiliary Bootstrap LDO for Improved Efficiency
    • 3.5µA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup or Latchoff Mode Overload Protection
    • DL to LX Short Detection Feature
    • Built-In Output Voltage Monitoring with Active-Low RESET
    • Programmable EN/UVLO Threshold
    • 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

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

Parametric Specs

See parametric specs for Step-Down Switching Regulators (404)


Part NumberVIN
(V)		VIN
(V)		VOUT1
(V)		VOUT1
(V)		IOUT1
(A)		Switch TypeSynchronous SwitchingOper. Freq.
(kHz)		FeaturesDesign ToolsPackage/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX17536 4.5600.9374
External
Internal
Yes2200
Adjustable Freq.
Current Limit
External Sync.
Fixed Freq./PWM
Reset Output
EE-Sim
TQFN-CU/20
$3.10 @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.

Design Resources


MAX17536EVKITA: Evaluation Kit for the MAX17536 in 3.3V Output-Voltage Application
MAX17536EVKITB: Evaluation Kit for the MAX17536 in 5V Output-Voltage Application
MAX17536EVKITBE: Evaluation Kit for the MAX17536 5V Output-Voltage Application

Tools & Models

  • EE-Sim: Design & Simulate MAX17536
  • MAX17536 SIMPLIS Schematic
  • MAX17536 SIMPLIS Schematic

    •

    Quality And Environmental

    Product Reliability Reports: MAX17536.pdf 
    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 >

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    Tools & Models

    Reference Designs

    Type ID Title
    System Board6303MAXREFDES125#: Non-isolated 24V to 5.1V, 20W Power Supply
    Evaluation Board8918MAX17536EVKITB Evaluation Kit for the MAX17536 in 5V Output-Voltage Application
    Evaluation Board8917MAX17536EVKITA Evaluation Kit for the MAX17536 in 3.3V Output-Voltage Application
    Evaluation Board10518MAX17536EVKITBE Evaluation Kit for the MAX17536 5V Output-Voltage Application