Both products incorporate multiple protection features to prevent damage during a fault condition. An internal soft-start circuit prevents a high inrush current during startup, and thermal shutdown protection shields the IC from thermal damage. Both devices monitor the LED string condition for open or shorts and automatically disable any faulty current sinks.
Designers will benefit from smaller PCB footprints and lower BOM costs due to the high frequency operation of the boost converter. The addition of an external resistor allows for frequencies up to 1MHz. The device can be PWM modulated over a wide frequency range from 20Hz to 20kHz to provide a high contrast ratio. In addition, the lower external component count will enhance system reliability. No additional external circuitry is required to implement advanced functions such as open and short LED protection and high contrast PWM dimming.
The IS32BL3552 and IS32BL3554 are fully specified over the -40°C to +125°C automotive temperature range, while operating over a wide input-voltage of 4.5V to 33V. The devices are offered in low profile 16-pin thermally enhanced TSSOP packages with an exposed thermal pad. Prices start at $1.29 for IS32BL3552 and $1.39 for IS32BL3554 in 1,000 piece quantities.
About the CompanyISSI is a fabless semiconductor company that designs and markets high performance integrated circuits for the following key markets: (i) automotive, (ii) communications, (iii) industrial, medical, and military, and (iv) digital consumer. The Company's primary products are high speed and low power SRAM and low and medium density DRAM. The Company also designs and markets NOR flash products and high performance analog and mixed signal integrated circuits. ISSI is headquartered in Silicon Valley with worldwide offices in Taiwan, Japan, Singapore, China, Europe, Hong Kong, India, and Korea. Visit our web site at http://www.issi.com/. The photo is also available via AP PhotoExpress.
CONTACT: Company Integrated Silicon Solution, Inc. Ven Shan 408.969.4622 email@example.com Aaron Reynoso 408.969.5141 firstname.lastname@example.org Tom Doczy 408.969.4620 email@example.com Investors Shelton Group Leanne Sievers, EVP P: 949-224-3874 E: firstname.lastname@example.org Matt Kreps, Managing Director P: 972-239-5119 ext. 125 E: email@example.com
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