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 +85°C temperature range.
Key Features
Applications/Uses
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
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 prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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