MAX17075

PRODUCTION

Boost-Regulator with Integrated Charge Pumps, Switch Control, and High-Current Op Amp

Integrated Power Solution for LCD Monitors Saves Cost and Design Time

Data Sheet (Rev. 2) Product Selection Table

Part Models: 4
1ku List Price: Starting From $1.20

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Overview

2.5V to 5.5V Input Operating Range
Current Mode Step-Up Regulator
- Fast-Transient Response
- Built-In 20V, 3A, 0.16Ω n-Channel Power MOSFET
- Cycle-by-Cycle Current Limit
- 87% Efficiency (5V Input to 13V Output)
- 1.2MHz Switching Frequency
- ±1% Output Voltage Regulation Accuracy
High-Current 18V VCOM Buffer
- ±500mA Output Short-Circuit Current
- 45V/µs Slew Rate
- 20MHz -3dB Bandwidth
- Rail-to-Rail Output
Regulated Charge Pump for TFT Gate-On Supply
Regulated Charge Pump for TFT Gate-Off Supply
Logic-Controlled High-Voltage Switches with Adjustable Delay
Soft-Start and Timed Delay Fault Latch for All Outputs
Overload and Thermal Protection

The MAX17075 includes a high-voltage boost regulator,one high-current operational amplifier, two regulated charge pumps, and one MLG block for gate-driver supply modulation.

The step-up DC-DC converter is a 1.2MHz current-mode boost regulator with a built-in power MOSFET. It provides fast load-transient response to pulsed loads while producing efficiencies over 85%. The built-in 160mΩ (typ) power MOSFET allows output voltages as high as 18V boosted from inputs ranging from 2.5V to 5.5V. A built-in 7-bit digital soft-start function controls startup inrush currents.

The gate-on and gate-off charge pumps provide regulated TFT gate-on and gate-off supplies. Both output voltages can be adjusted with external resistive voltage-dividers.

The operational amplifier, typically used to drive the LCD backplane (VCOM), features high-output short-circuit current (±500mA), fast slew-rate (45V/µs), wide bandwidth (20MHz), and rail-to-rail outputs.

The MAX17075 is available in a 24-pin thin QFN package with 0.5mm lead spacing. The package is a square (4mm x 4mm) with a maximum thickness of 0.8mm for ultra-thin LCD design. It operates over the -40°C to +105°C temperature range.

Applications

LCD Monitor Panels
LCD TVs
Notebook Computer Displays

Part Models: 4
1ku List Price: Starting From $1.20

Documentation

Data Sheet 1

MAX17075: Boost-Regulator with Integrated Charge Pumps, Switch Control, and High-Current Op Amp Data Sheet (Rev.2) 12/19/2012

Reliability Data 1

MAX17075 Reliability Data 01/12/2023

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX17075ETG+	24-TQFN-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX17075ETG+T	24-TQFN-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX17075GTG/V+	24-TQFN-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX17075GTG/V+T	24-TQFN-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 20, 2016 - 1612 ASSEMBLY
		pcn_1612
MAX17075ETG+	PRODUCTION
MAX17075ETG+T	PRODUCTION
Jun 18, 2021 - 2161 ASSEMBLY
		pcn_2161
MAX17075GTG/V+	PRODUCTION
MAX17075GTG/V+T	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Evaluation Kits

Evaluation Kit for the MAX17075

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Features and Benefits

+2.5V to +5.5V Input-Voltage Range
Output Voltages (+4.5V to +5.5V Input Voltage)
- +13V Output at 500mA (Step-Up Switching Regulator)
- +30V Output at 30mA (Positive Charge Pump)
- -7V Output at 60mA (Negative Charge Pump)
- High-Current Op Amp (±500mA Peak Current)
1.2MHz Switching Frequency
All Output Voltages are Resistor Adjustable
Logic-Controlled High-Voltage Switches with Capacitor Control Delay
Low-Profile Surface-Mount Components
Lead(Pb)-Free and RoHS Compliant
Fully Assembled and Tested

Product Details

The MAX17075 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that provides the voltages and features required for active-matrix thin-film transistor (TFT), liquid-crystal display (LCD) panels in LCD monitors and LCD TVs. The EV kit contains a step-up switching regulator, a two-stage positive charge pump for the TFT gate-on supply, a single-stage negative charge pump for the TFT gate-off supply, and a high-current op amp. Also included is a logic-controlled high-voltage switch array, with capacitor control delay, for the positive gate-driver supply. A capacitive dummy load is provided at the high-voltage switch output for ease of testing without an attached panel.

The MAX17075 EV kit is designed to operate from a DC supply voltage of +2.5V to +5.5V. At +5V (±10%) nominal input voltage, the step-up switching regulator provides a +13V output and up to 500mA. The positive charge pump provides a +30V output and up to 30mA. The negative charge pump provides a -7V output and up to 60mA. The high-current op amp provides a +6.5V output that can source or sink 500mA peak current. The high-voltage switch array is controlled by external logic.

The MAX17075 switches at 1.2MHz, allowing the use of tiny surface-mount components. The MAX17075 thin QFN package (0.8mm maximum height) with low-profile external components allows this circuit to be less than 3mm high.

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