The MAX17010 evaluation kit (EV kit) is a fully assembled
and tested surface-mount printed circuit board
(PCB) that provides the voltages and features required
for active-matrix, thin-film transistor (TFT), liquid-crystal
displays (LCDs). The EV kit contains a step-up switching
regulator, a high-speed operational amplifier (op
amp), and eight high-voltage level-shifting buffers for
scan-driver applications.
The EV kit operates from a DC supply voltage of 1.8V to
5.5V. The step-up switching regulator is configured for a
8.5V output providing at least 300mA from a 2.7V input.
The positive charge pump is configured for a 23V output
providing at least 20mA. The negative charge pump is
configured for a -7.5V output providing at least 20mA.
The op amp is configured for 4.25V, capable of providing
up to ±150mA peak. The high-voltage, level-shifting
scan driver buffers eight logic inputs and shifts them to
a desired level to drive TFT-LCD row logic.
The MAX17010 EV kit demonstrates low quiescent current
and high efficiency (> 85%) for maximum battery
life. Operation at 1.2MHz allows the use of tiny surface-mount
components. The MAX17010 thin QFN package (0.8mm maximum height), with low-profile external components, allows this circuit to be less than 1.2mm high.
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