MAX16974

High-Voltage, 2.2MHz, 2A Automotive Step-Down Converter with Low Operating Current

2A Automotive Buck that Meets OEMs' Tight Power Budgets


Please check latest availability status for a specific part variant.

Description

The MAX16974 is a 2A, current-mode, step-down converter with an integrated high-side switch. It is designed to operate with 3.5V to 28V input voltages, while using only 35µA quiescent current at no load. The switching frequency is adjustable from 220kHz to 2.2MHz by an external resistor and can be synchronized to an external clock. The output voltage is pin selectable to be 5V fixed or 1V to 10V adjustable. The wide input voltage range makes the device ideal for automotive and industrial applications.

The device operates in skip mode for reduced current consumption in light-load applications. An adjustable reset threshold helps keep microcontrollers alive down to their lowest specified input voltage. Protection features include cycle-by-cycle current limit, overvoltage, and thermal shutdown with automatic recovery. The device also features a power-good monitor to ease power-supply sequencing.

The device operates over the -40°C to +125°C automotive temperature range and is available in a 16-pin TSSOP-EP package.
MAX16974: Typical Application Circuit MAX16974: Typical Application Circuit Enlarge+

Key Features

  • Wide 3.5V to 28V Input Voltage Range
  • 42V Input Transient Tolerance
  • 5V Fixed or 1V to 10V Adjustable Output Voltage
  • Integrated 2A Internal High-Side Switch
  • Adjustable Switching Frequency (220kHz to 2.2MHz)
  • Operates Through Cold Crank with High Duty Cycle
  • Frequency Synchronization Input
  • Internal Boost Diode
  • 35µA Skip-Mode Operating Current
  • 5µA Typical Shutdown Current
  • Adjustable Power-Good Output Level and Timing
  • 3.3V Logic Level to 42V Compatible Enable Input
  • Current-Limit, Thermal-Shutdown, and Overvoltage Protections
  • Automotive Temperature Range: -40°C to +125°C
  • AEC-Q100 Qualified

Applications/Uses

  • Automotive
  • Industrial
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX16974 3.5281105
Preset
Resistor
2InternalYes12200
TSSOP/16
$1.69 @1k
See All Step-Down Switching Regulators (367)
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.


MAX16974EVKIT: Evaluation Kit for the MAX16974

Technical Documents

User Guide 5861 EE-SIM Design and Simulation Environment User Guide
Reference Schematic 5137 Layout Guidelines for the MAX16974/MAX16975/MAX16976 DC-DC Converters

Quality and Environmental Data

Request Reliability Report for: MAX16974 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX16974AUE/V+
  • MAX16974AUE/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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