MILPITAS, Calif., Oct. 10, 2016 /PRNewswire/ -- Intersil
Corporation (NASDAQ: ISIL), a leading provider of innovative power
management and precision analog solutions, today announced the
industry's lowest power 14-channel programmable gamma buffer for
automotive TFT-LCD displays. The automotive-grade ISL76534 delivers
the highest accuracy gamma calibration to ensure consistent
brightness and color matching of every LCD panel inside a vehicle.
The ISL76534 is ideal for next generation LCDs designed for
infotainment displays, advanced driver assistance system (ADAS)
smart mirrors and instrument cluster displays.
The robust ISL76534 provides engineers with one Vcom and 14
gamma channels with 10-bit resolution for fine-tuning the gamma
curve. LCD panels that are not properly gamma corrected often
appear bleached out or too dark. Engineers employ the ISL76534 to
calibrate and store the gamma curve, guaranteeing that each LCD
powers up and displays eye-pleasing images. The ISL76534's internal
EEPROM stores the factory-calibrated gamma and Vcom reference
values, and enables significantly higher reliability than
competitive devices by offering 10,000 write cycles and 20 years of
data retention at 105°C.
The ISL76534 circuit architecture makes it easier to use than
competitive solutions. No power-supply sequencing is
required--either analog or digital power supplies can startup
first. At initialization, all gamma buffer and Vcom output channels
monotonically start up together in a controlled fashion preventing
any possibility of an LCD panel lock-up. This adds another layer of
reliability for ADAS and safety systems, such as backup cameras
that rely on LCD panels to startup immediately and work flawlessly.
In addition, the ISL76534's high 75 dB PSRR prevents power supply
noise from reaching the gamma buffer outputs and becoming visible
in the LCD panel.
The ISL76534 also provides the industry's lowest power
consumption at 56.6mW, which is 5x lower than the closest
competitor. Its low maximum output current for analog, digital, and
Vcom supplies simplifies power supply and thermal design. The
device's low power dissipation also eliminates the need for
heatsinks, prevents junction temperature overheating, and allows
engineers to use lower cost LDOs instead of switching
regulators.
"Carmakers are continuing to leverage a variety of displays to
enable new features in next generation vehicles," said Philip Chesley, senior vice president of
Precision Products at Intersil. "Our 14-channel programmable gamma
buffer ensures every vehicle's LCD panels offer consistent rich
color and a uniform, visually appealing appearance drivers have
come to expect from their electronics."
Key Features and Specifications of ISL76534
- I2C programmable, 15-channel reference voltage
outputs
- 14-channel gamma references, 10-bit resolution, buffered
outputs with 60mA Iout and 5V/µs slew rate
- 1-channel Vcom calibrator, 10-bit resolution, 100mA (max) Iout
and 5V/µs slew rate
- Analog supply operating range from 6.3V to 19V
- Digital supply operating range from 2.25V to 3.6V
- Ultra-low power consumption of 56.6mW simplifies power supply
and thermal design
- Analog AVDD max current of 2.5mA, amp
AVDD max current of 1.2mA, and digital DVDD
max current of 0.33mA
- Typical quiescent current power of 12mW at 8V
- High PSRR of 75dB typical at DC
- EEPROM data retention of 20 years at +105°C for extreme
robustness and reliability
- EEPROM endurance of 10,000 write cycles
- Over-temperature protection against excessive die
temperature
- AEC-Q100 Grade-2 qualified for operation from -40°C to
+105°C
System designers can create a complete TFT-LCD power supply by
combining the ISL76534 with the ISL78419 TFT-LCD PMIC, ISL78206 40V
2.5A synchronous buck controller, and ISL78307 40V low Iq linear
regulator. The ISL78171 6-channel, 50mA, LED backlight driver can
be added to drive all infotainment and ADAS TFT-LCDs.
Pricing and Availability
The 14-channel ISL76534
programmable gamma buffer is available now in a compact 4.5mm x
5mm, 28-lead TQFN package and is priced at $1.99 USD in 1k quantities. An ISL76534EVAL1Z
evaluation board can be purchased for $116.00 USD. For more information, please visit:
www.intersil.com/products/isl76534.
About Intersil
Intersil Corporation is a leading
provider of innovative power management and precision analog
solutions. The company's products form the building blocks of
increasingly intelligent, mobile and power hungry electronics,
enabling advances in power management to improve efficiency and
extend battery life. With a deep portfolio of intellectual property
and a rich history of design and process innovation, Intersil is
the trusted partner to leading companies in some of the world's
largest markets, including industrial and infrastructure, mobile
computing, automotive and aerospace. For more information about
Intersil, visit our website at www.intersil.com.
Intersil and the Intersil logo are trademarks or registered
trademarks of Intersil Corporation. All other brands, product names
and marks are or may be trademarks or registered trademarks used to
identify products or services of their respective owners.
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SOURCE Intersil Corporation