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MAX17112

MAX17112

High-Performance, Step-Up, DC-DC Converter

High-Efficiency Boost Converter Provides Overvoltage Protection Up to 24V

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Overview

Description

The MAX17112 is a high-performance, step-up, DC-DC converter that provides a regulated supply voltage for active-matrix thin-film transistor (TFT) liquid-crystal displays (LCDs). The MAX17112 incorporates current-mode, fixed-frequency (1MHz), pulse-width modulation (PWM) circuitry with a built-in, n-channel power MOSFET to achieve high efficiency and fast-transient response. The input overvoltage protection (OVP) function prevents damage to the MAX17112 from an input surge voltage (up to 24V).

The high switching frequency (1MHz) allows the use of ultra-small inductors and low-ESR ceramic capacitors. The current-mode architecture provides fast-transient response to pulsed loads. A compensation pin (COMP) gives users flexibility in adjusting loop dynamics. The internal MOSFET can generate output voltages up to 20V from an input voltage between 2.6V and 5.5V.

Soft-start slowly ramps the input current and is programmable with an external capacitor. The MAX17112 is available in a 10-pin TDFN package.
MAX17112: Typical Operating Circuit MAX17112: Typical Operating Circuit Enlarge+

Key Features

  • Input Overvoltage Protection
  • Adjustable Output from VIN to 20V
  • 2.6V to 5.5V Input Supply Range
  • Input Supply Undervoltage Lockout
  • 1MHz Fixed Switching Frequency
  • Programmable Soft-Start
  • Small 10-Pin, TDFN Package
  • Thermal-Overload Protection

Applications/Uses

  • LCD Monitor Panels
  • Notebook Computer Displays

Parametric Specs

See parametric specs for Step-Up Switching Regulators (101)


Part NumberVIN
(V)		VIN
(V)		VOUT1
(V)		VOUT1
(V)		IOUT1
(A)		Switch TypeOper. Freq.
(kHz)		FeaturesPackage/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX17112 2.65.52.6200.6Internal1000
Current Limit
Fixed Freq./PWM
Output OVP
TDFN/10
$0.98 @1k

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.

Design Resources


MAX17112EVKIT: Evaluation Kit for the MAX17112

Technical Documents

App Note 4835 True-Shutdown Circuit

Quality And Environmental

Product Reliability Reports: MAX17112.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

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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    • Technical Docs

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    Reference Designs

    Type ID Title
    Evaluation Board6177MAX17112EVKIT Evaluation Kit for the MAX17112