California, MILPITAS--October 11, 2016 — Intersil Corporation (NASDAQ: ISIL), a leading provider of innovative power management and precision analog solutions, today announced the industry's industry-leading capabilities for automotive TFT-LCD displays A minimum of 14 channels of programmable gamma buffer -- ISL76534. The automotive grade ISL76534 provides the highest accuracy gamma correction, ensuring consistent brightness and color matching for each onboard LCD panel. The ISL76534 is ideal for next-generation LCDs designed for in-vehicle infotainment displays, advanced driver assistance systems (ADAS) smart mirrors, and instrument cluster displays.

The powerful ISL76534 provides engineers with a Vcom and 14 gamma channels that support 10-bit resolution for fine-tuning of the gamma curve, avoiding the white or darkness of the LCD panel due to incorrect gamma correction. Engineers use the ISL76534 to calibrate and store gamma curves, ensuring that each LCD is turned on and a pleasing image is displayed. The ISL76534's internal EEPROM stores factory-corrected gamma and Vcom reference values ​​and achieves significantly higher reliability and performance than competing devices by providing 10,000 write cycles and 20 years of data retention (105 °C).

The ISL76534 circuit architecture makes it easier to use than competing solutions. No power sequencing required – analog or digital power can be started first. At initialization, all gamma buffers and Vcom output channels are simultaneously monotonically activated in a controlled manner, thereby eliminating LCD panel lockout. This adds another layer of reliability to ADAS and automotive safety systems, such as reversing cameras that rely on LCD panels for quick start-up and perfect operation. In addition, the ISL76534's 75 dB high power supply rejection ratio (PSRR) prevents power supply noise from reaching the gamma buffer output and can be displayed on the LCD panel.

ISL76534

The ISL76534 also offers the industry's lowest power consumption of 56.6mW, which is only one-fifth of the closest competitor. Its low maximum output current for analog, digital, and Vcom supplies simplifies power and thermal design. The device's low power dissipation also eliminates the need for a heat sink, prevents excessive junction temperatures, and allows engineers to replace switching regulators with lower cost LDOs.

Philip Chesley, senior vice president of precision products at Intersil, said: "Automotive manufacturers continue to use a variety of display systems to provide more new features in next-generation vehicles. Our 14-channel programmable gamma buffers ensure consistent LCD panels for every car. The rich color and uniform, visually appealing look meets the driver's expectations for electronic systems."

Main features and specifications of ISL76534

· I2C programmable 15-channel reference voltage output

o 14-channel gamma reference, 10-bit resolution, buffered output with 60mA Iout and 5V/μs slew rate

o 1-channel Vcom corrector, 10-bit resolution, 100mA (maximum) output current and 5V/μs slew rate

· Analog power supply operating voltage range: 6.3V - 19V

· Digital power supply operating voltage range: 2.25V - 3.6V

· 56.6mW ultra-low power simplifies power and thermal design

o 2.5mA analog AVDD maximum current, 1.2mA amplifier AVDD maximum current, and 0.33mA digital DVDD maximum current

· Typical quiescent current consumption is 12mW @8V

· PSRR (typical) 75dB

· EEPROM data is maintained for 20 years @ +105 °C, extreme ruggedness and reliability

· EEPROM write cycle EEPROM durability

· Over temperature protection when the die temperature is too high

· AEC-Q100 Grade-2 qualified, operating temperature range: -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, the 40V 2.5A synchronous buck controller ISL78206, and the 40V low Iq linear regulator ISL78307. Add a 6-channel 50mA LED backlight driver, the ISL78171, to drive all infotainment and ADAS TFT-LCDs.

Supply

The 14-channel ISL76534 programmable gamma buffer is available now in a compact 4.5mm x 5mm 28-lead TQFN package. The ISL76534EVAL1Z evaluation board is also available.

About Intersil

Intersil is a leading provider of innovative power management and precision analog solutions. The company's products are used in increasingly intelligent, mobile and power-hungry electronic devices to help advance power management to increase efficiency and extend battery life.

With a strong intellectual property portfolio and a rich history of design and process innovation, Intersil is a trusted partner to some of the world's largest markets in industrial and infrastructure, mobile computing, automotive and aerospace.

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