MAX16932

2.2MHz, 36V, Dual Buck with 20µA Quiescent Current

Low IQ, High-Frequency, Dual Buck Controllers Save Board Space and Meet Automotive OEM Power-Consumption Requirements


Please check latest availability status for a specific part variant.

Description

The MAX16932/MAX16933 offer two high-voltage, synchronous step-down controllers that use only 20µA of quiescent current with no load. They operate with an input voltage supply from 3.5V to 42V and can operate in drop-out condition by running at 95% duty cycle. The devices are intended for applications with mid- to high-power requirements and requiring two independently controlled output supplies, such as automotive applications.

The MAX16932/MAX16933 step-down controllers operate 180° out-of-phase for reduced input ripple. The devices also operate with switching frequencies up to 2.2MHz to allow use of small external components and to guarantee no AM band interference. The FSYNC input programmability enables three frequency modes for optimized performance: forced fixed-frequency operation, skip mode with ultra-low quiescent current (20µA), and synchronization to an external clock. The devices provide a spread-spectrum option to minimize EMI interference.

The devices also feature a power-OK monitor and overvoltage and undervoltage lockout. Protection features include cycle-by-cycle current limit and thermal shutdown.

The devices are available in a 28-pin TQFN-EP package and are specified for operation over the -40°C to +125°C automotive temperature range.
MAX16932, MAX16933: Block Diagram MAX16932, MAX16933: Block Diagram Enlarge+

Key Features

  • Meets Stringent OEM Module Power Consumption and Performance Specifications
    • 20µA Quiescent Current in Skip Mode
    • ±1% Output-Voltage Accuracy: 5.0V/3.3V Fixed or Adjustable Between 1V and 10V
  • Enables Crank-Ready Designs
    • Wide Input Supply Range from 3.5V to 36V
  • EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range
    • 50ns (typ) Minimum On-Time Guarantees Skip-Free Operation for 3.3V Output from Car Battery at 2.2MHz
    • Spread-Spectrum Option
    • Frequency-Synchronization Input
    • Resistor-Programmable Frequency Between 200kHz and 2.2MHz
  • Integration and Thermally Enhanced Packages Save Board Space and Cost
    • Dual, 2MHz Step-Down Controllers
    • 180° Out-of-Phase Operation
    • Current-Mode Controllers with Forced-Continuous and Skip Modes
    • Thermally Enhanced 28-Pin TQFN-EP Package
  • Protection Features Improve System Reliability
    • Supply Overvoltage and Undervoltage Lockout
    • Overtemperature and Short-Circuit Protection

Applications/Uses

  • Distributed DC Power Systems
  • Navigation and Radio Head Units
  • POL Applications for Automotive Power
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX16932 3.5361103.3Preset10ExternalYesYes22200EE-Sim
TQFN/28
$4.13 @1k
MAX16933 1000
TQFN/28
See All Step-Down Switching Regulators (365)
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.


MAX16932EVKIT: Evaluation Kit for the MAX16932 and MAX16933

Quality and Environmental Data

Product Reliability Reports: MAX16932.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • EE-Sim: Design & Simulate MAX16932
  • MAX16932 SIMPLIS Schematic
  • CAD Symbols and Footprints

  • MAX16932ATIR/V+
  • MAX16932ATIR/V+T
  • MAX16932ATIS/V+
  • MAX16932ATIS/V+T
  • MAX16932ATIT/V+
  • MAX16932ATIT/V+T
  • MAX16932ATIT/VY+
  • MAX16932ATIT/VY+T
  • MAX16932ATIU/V+
  • MAX16932ATIU/V+T
  • MAX16932CATIR/VY+
  • MAX16932CATIR/VY+T
  • MAX16932CATIS/V+
  • MAX16932CATIS/V+T
  • MAX16932CATIS/VY+
  • MAX16932CATIS/VY+T
  • MAX16932CATIU/V+
  • MAX16932CATIU/V+T
  • 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 >

     
    Status:
    Package:
    Temperature:

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