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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

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Key Features

Input Overvoltage Protection
Adjustable Output from V_IN 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

Part Number

V_IN
(V)

V_OUT1
(V)

I_OUT1
(A)

Output Adjust. Method

Switch Type

I_CC
(mA)

Shutdown Mode Supply Current
(µA)

DC-DC Outputs

Oper. Freq.
(kHz)

Package/Pins

Budgetary
Price

min

max

min

max

typ

max

See Notes

MAX17112

2.6

5.5

2.6

0.6

Resistor

Internal

0.3

160

250

1000

TDFN/10

$0.98 @1k

See All Step-Up Switching Regulators (101)

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 Data

Product Reliability Reports: MAX17112.pdf
Lead-Free Package Tin (Sn) Whisker Reports

Quality And Environmental

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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