MAX17572

4.5V–60V, 1A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation

60V Synchronous Buck Converter with Internal FETs Enables High Efficiency and Low Temperature Rise


Description

The MAX17572 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 and generates output voltages from 0.9V up to 0.9 x VIN. The feedback (FB) voltage is accurate to within ±1.2% over -40°C to +125°C. The MAX17572 uses peak current-mode control.

The device is available in a 12-pin (3mm x 3mm) TDFN package. Simulation models are available.

MAX17572: Functional (or Block) Diagram MAX17572: Functional (or Block) Diagram Enlarge+

Key Features

  • Reduces External Components and Total Cost
    • No Schottky-Synchronous Operation
    • Internal Compensation for Any Output Voltage
    • All-Ceramic Capacitors, Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4.5V to 60V Input
    • Adjustable 0.9V to 0.9 x VIN Output
    • Continuous 1A Current Over Temperature
    • 400kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization
  • Reduces Power Dissipation
    • Peak Efficiency > 92%
    • Auxiliary Bootstrap LDO for Improved Efficiency
    • 4.65μA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup Mode Overload Protection
    • Adjustable Soft-Start
    • 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 Control Power Supplies
  • Wall Transformer Regulation
Part Number VIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Output Adjust. Method IOUT1
(A)
Switch Type Synchronous Switching Power Good Signal DC-DC Outputs Oper. Freq.
(kHz)
Design Tools Package/Pins Budgetary
Price
min max min max max See Notes
MAX17572 NEW! 4.5 60 0.9 54 Resistor 1 Internal Yes Yes 1 2200 EE-Sim
TDFN/12
$1.83 @1k
See All Step-Down Switching Regulators (321)
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.


MAX17572EVKITA: Evaluates MAX17572 in 3.3V Output-Voltage Application
MAX17572EVKITB: Evaluates MAX17572 in 5V Output-Voltage Application

Quality and Environmental Data

Request Reliability Report for: MAX17572 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

Design & Simulate MAX17572

Related Resources


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Type ID Title
Evaluation Board9250MAX17572EVKITB Evaluates MAX17572 in 5V Output-Voltage Application
Evaluation Board9249MAX17572EVKITA Evaluates MAX17572 in 3.3V Output-Voltage Application