MAX16909

36V, 220kHz to 1MHz Step-Down Converter with Low Operating Current

36V, 3A Automotive Buck Supports Truck Applications


Please check latest availability status for a specific part variant.

Description

The MAX16909 is a 3A, current-mode, step-down converter with an integrated high-side switch. The device is designed to operate with input voltages from 3.5V to 36V while using only 30µA quiescent current at no load. The switching frequency is adjustable from 220kHz to 1MHz by an external resistor and can be synchronized to an external clock. The output voltage is pin selectable to be 5V fixed or adjustable from 1V to 10V. The wide input voltage range along with its ability to operate at high duty cycle during undervoltage transients make the device ideal for automotive and industrial applications.

The device operates in skip mode for reduced current consumption in light-load applications. Protection features include overcurrent 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 16-pin TSSOP and TQFN (5mm x 5mm) packages with exposed pads.
MAX16909: Typical Application Circuit MAX16909: Typical Application Circuit Enlarge+

Key Features

  • Wide 3.5V to 36V Input Voltage Range
  • 42V Input Transients Tolerance
  • High Duty Cycle During Undervoltage Transients
  • 5V Fixed or 1V to 10V Adjustable Output Voltage
  • Integrated 3A Internal High-Side (70mΩ typ) Switch
  • Fast Load-Transient Response and Current-Mode Architecture
  • Adjustable Switching Frequency (220kHz to 1MHz)
  • Frequency Synchronization Input
  • 30µA Standby Mode Operating Current
  • 5µA Typical Shutdown Current
  • Overvoltage, Undervoltage, Overtemperature, and Short-Circuit Protections

Applications/Uses

  • Automotive
  • High-Voltage Input DC-DC Converter
  • Industrial
  • Point-of-Load Applications
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)
Package/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX16909 3.5361105
Preset
Resistor
3InternalYesYes11000
TQFN/16
TSSOP/16
$2.10 @1k
See All Step-Down Switching Regulators (389)
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.


MAX16909EVKIT: Evaluation Kit for the MAX16909

Technical Documents

User Guide 5861 EE-SIM Design and Simulation Environment User Guide

Quality and Environmental Data

Product Reliability Reports: MAX16909.pdf 
Lead-Free Package Tin (Sn) Whisker Reports
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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