MAX17019

High-Input-Voltage Quad-Output Controller

Highly Integrated Voltage Controller for Four Output Voltage Regulators in a 6mm x 6mm Package


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Description

The MAX17019 is a high-input-voltage quad-output controller (up to 38V). The MAX17019 provides a compact, low-cost controller capable of providing four independent regulators—a main stage, a 3AP-P internal step-down, a 5AP-P internal step-down, and a 2A source/sink linear regulator. The input voltage is up to 38V.

The internal switching regulators include 5V synchronous MOSFETs that can be powered directly from a single Li+ cell or from the main 3.3V/5V power stages. Finally, the linear regulator is capable of sourcing and sinking 2A to support DDR termination requirements or to generate a fixed output voltage.

The step-down converters use a peak current-mode, fixed-frequency control scheme—an easy to implement architecture that does not sacrifice fast-transient response. This architecture also supports peak current-limit protection and pulse-skipping operation to maintain high efficiency under light-load conditions.

Separate enable inputs and independent open-drain power-good outputs allow flexible power sequencing. A soft-start function gradually ramps up the output voltage to reduce the inrush current. Disabled regulators enter high-impedance states to avoid negative output voltage created by rapidly discharging the output through the low-side MOSFET. The MAX17019 also includes output undervoltage, output overvoltage, and thermal-fault protection.

The MAX17019 is available in a 48-pin, 6mm x 6mm thin QFN package.
MAX17019: Standard Application Circuit MAX17019: Standard Application Circuit Enlarge+

Key Features

  • Fixed-Frequency, Current-Mode Controllers
  • 5.5V to 38V Input Range (Step-Down)
  • 1x Step-Down Controller
  • 1x Internal 5AP-P Step-Down Regulator
  • 1x Internal 3AP-P Step-Down Regulator
  • 1x 2A Source/Sink Linear Regulator with Dynamic REFIN
  • Internal BST Diodes
  • Internal 5V 50mA Linear Regulator
  • Fault Protection—Undervoltage, Overvoltage, Thermal, Peak Current Limit
  • Independent Enable Inputs and Power-Good Outputs
  • Voltage-Controlled Soft-Start
  • High-Impedance Shutdown
  • 10µA (typ) Shutdown Current

Applications/Uses

  • Embedded Control Systems
  • Set-Top Box
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)
Package/Pins
minmaxminmax
MAX17019 5.5380.7536Resistor5
External
Internal
YesYes31000
TQFN/48
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.

Technical Documents

Tutorial 5133 Power-Supply Solutions for Altera FPGAs
Tutorial 5132 Power-Supply Solutions for Xilinx FPGAs

Quality and Environmental Data

Product Reliability Reports: MAX17019.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX17019ATM+
  • MAX17019ATM+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 >

     
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