MAX17083

Low-Voltage, Internal Switch, Step-Down Regulator

Saves Price and Board Space—Internal 5A Step-Down Regulator


Please check latest availability status for a specific part variant.

Description

The MAX17083 is a fixed-frequency, current-mode, step-down regulator optimized for low-voltage, low-power applications. This regulator features dual internal n-channel MOSFET power switches for high efficiency and reduced component count. External Schottky diodes are not required. An integrated boost switch eliminates the need for an external boost diode. The internal 25mΩ low-side power MOSFET easily supports continuous load currents up to 5A. The MAX17083 produces an adjustable 0.75V to 2.7V output voltage from the system's 3.3V or 5V input supply.

This step-down regulator uses a peak current-mode control scheme to eliminate the additional external compensation required by voltage-mode architectures, providing an easy-to-implement architecture without sacrificing fast transient response. The MAX17083 provides peak current-limit protection and operates in light-load pulse-skipping mode to maintain high efficiency under light-load conditions.

Independent enable input and open-drain power-good output allow flexible system power sequencing. The voltage soft-start gradually ramps up the output voltage within a predictable time period, effectively limiting the inrush current. The MAX17083 features output undervoltage, output overvoltage, and thermal-fault protection.

The MAX17083 is available in a 24-pin 4mm x 4mm x 0.75mm TQFN package. The exposed backside pad improves thermal characteristics.
MAX17083: Standard Application Circuit MAX17083: Standard Application Circuit Enlarge+

Key Features

  • Fixed-Frequency, Current-Mode Controller
  • 2.4V to 5.5V Input Range
  • Internal 5A Step-Down Regulator
  • Internal BST Switch
  • Fault Protection: Undervoltage, Overvoltage, Thermal, Peak Current Limit
  • Enable Input and Power-Good Output
  • Voltage-Controlled Soft-Start
  • High-Impedance Shutdown
  • < 1µA (typ) Shutdown Current

Applications/Uses

  • Low-Power Architectures
  • Netbook and Nettop PCs
  • Notebook and Subnotebook Computers
  • PDAs and Mobile Communicators
  • Portable Gaming
  • Ultra-Mobile PCs
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
MAX17083 2.45.50.752.7
1.1
1.5
1.8
Preset
Resistor
5InternalYesYes11500
TQFN/24
$3.36 @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.


MAX17083EVKIT: Evaluation Kit for the MAX17083

CAD Symbols and Footprints

  • MAX17083ETG+
  • MAX17083ETG+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.

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