The MAX1513/MAX1514 provide complete power-supply
solutions for active-matrix thin-film transistor (TFT)
liquid-crystal displays (LCDs). Both devices include a
high-performance step-up regulator controller, three linear-
regulator controllers, and an adjustable delay block
for startup sequencing. The MAX1513 includes an
additional linear-regulator controller and a high-performance
buffer amplifier. The MAX1513/MAX1514 can
operate from 2.7V to 5.5V input supplies and provide
overload protection with timer delay latch on all the regulated
outputs.
The step-up regulator controller drives an external N-channel
MOSFET to generate the regulated supply voltage
for the panel source-driver ICs. Its current-mode
control architecture provides fast transient response to
pulsed loads. The high switching frequency (up to
1.5MHz) allows the use of ultra-small inductors and
ceramic capacitors while achieving efficiencies over 85%
using lossless current sensing. The internal soft-start limits
the input surge current during startup.
The gate-on and gate-off linear-regulator controllers of
the MAX1513/MAX1514 provide regulated TFT gate-on
and gate-off supplies. The gate-on supply is activated
after an adjustable delay following the step-up regulator.
The logic linear-regulator controller can be used to create
a low-voltage logic supply. The gamma linear-regulator
controller of the MAX1513 can be used to generate a
gamma-correction reference supply or another generalpurpose
supply rail. The MAX1513's high-performance
buffer amplifier can drive the LCD backplane (VCOM)
or the gamma-correction divider string.
The MAX1513/MAX1514 are available in 4mm x 4mm
20-pin thin QFN packages with a maximum thickness of
0.8mm, suitable for ultra-thin LCD panel design.
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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