MAX17632

4.5V to 36V, 2A, High-Efficiency, Synchronous Step-Down DC-DC Converter

Wide Input Voltage, 2A Internal FET Synchronous Buck Converter Ideal for Industrial Applications


Please check latest availability status for a specific part variant.

Description

The MAX17632 is a high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operating over an input-voltage range of 4.5V to 36V. It can deliver up to 2A current. The MAX17632 is available in three variants, MAX17632A, MAX17632B, and MAX17632C. The MAX17632A and MAX17632B are fixed 3.3V and fixed 5V output parts, respectively. The MAX17632C is an adjustable output voltage (from 0.9V up to 90% of VIN) part. Built-in compensation across the output-voltage range eliminates the need for external compensation components.

The MAX17632 features peak-current-mode control architecture. The device can be operated in the forced pulse-width modulation (PWM), or pulse-frequency modulation (PFM), or discontinuous-conduction mode (DCM) to enable high efficiency under full-load and light-load conditions. The MAX17632 offers a low minimum on-time that allows high switching frequencies and a smaller solution size.

The feedback-voltage regulation accuracy over -40°C to +125°C for the MAX17632A/MAX17632B/MAX17632C is ±1.2%.The device is available in a 16-pin (3mm x 3mm) TQFN package. Simulation models are available.

MAX17632: Block Diagram MAX17632: Block 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 36V Input
    • Adjustable Output Voltage Range from 0.9V up to 90% of VIN
    • Delivers up to 2A Over the Temperature Range
    • 400kHz to 2.2MHz Adjustable Frequency with External Clock Synchronization
    • Available in a 16-Pin, 3mm x 3mm TQFN Package
  • Reduces Power Dissipation
    • Peak Efficiency of 94%
    • PFM and DCM Modes Enable Enhanced Light-Load Efficiency
    • Auxiliary Bootstrap Supply (EXTVCC) for Improved Efficiency
    • 2.8μA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup-Mode Overload Protection
    • Adjustable and Monotonic Startup with Prebiased Output Voltage
    • Built-in Output-Voltage Monitoring with RESET
    • Programmable EN/UVLO Threshold
    • 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

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
MAX17632 4.5360.932.42InternalYes
400
2200
Adjustable Freq.
Current Limit
External Sync.
Reset Output
EE-Sim
TQFN-CU/16
$1.07 @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.

MAX17632C5EVKIT: Evaluation Kit for the MAX17632 5V Output-Voltage Application
MAX17632AEVKIT: Evaluation Kit for the MAX17632 3.3V Output-Voltage Application
MAX17632BEVKIT: Evaluation Kit for the MAX17632 5V Output-Voltage Application
MAX17632C5EVKITE: Evaluation Kit for the MAX17632 5V Output-Voltage Application

Tools & Models

  • EE-Sim: Design & Simulate MAX17632
  • Request Reliability Report for: MAX17632 
    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
    System Board6722MAXREFDES1198: Ultra-Miniature 4.5V to 36V Input and 3.3V, 2A, High-Efficiency, Synchronous Step-Down DC-DC Converter Reference Design
    Evaluation Board9669MAX17632BEVKIT Evaluation Kit for the MAX17632 5V Output-Voltage Application
    Evaluation Board9668MAX17632AEVKIT Evaluation Kit for the MAX17632 3.3V Output-Voltage Application
    Evaluation Board9648MAX17632C5EVKIT Evaluation Kit for the MAX17632 5V Output-Voltage Application
    Evaluation Board10348MAX17632C5EVKITE Evaluation Kit for the MAX17632 5V Output-Voltage Application