Archive : 13 December 2007 год

Vishay released a series of yellow, amber, and white power SMD LEDs in the CLCC-6 ceramic package to offer thermal resistance of 40K/W or 60K/W and optical power from 2800 mcd to 9000 mcd for thermal-sensitive applications. With an profile of 0.9mm, the CLCC-6 flat ceramic package of the VLMK62, VLMY62, and VLMW62 devices allows the additional current drive for a maximum light output while maintaining a high service life of up to 50,000 hours. The LEDs are optimized for backlighting and illumination in automotive and transport, consumer, and general applications. Typical end products include handheld mobile devices, such as mobile phones and PDAs; traffic lights; advertising displays; bicycle lamps; household appliances, such as washer, driers, and refrigerators; and exterior automotive lighting, such as turn and brake lights. All devices in the series offer a 60° half-intensity angle and are compatible with IR-reflow solder processes, in accordance with CECC 00802 and J-STD-020C. Preconditioned according to JEDEC Level 4a standards, the CLCC-6 flat package is lead (Pb)-free and RoHS-compliant. The LEDs are automotive qualified AEC-Q101.

Linear Technology announces the LT6105, a current sense amplifier with an input common mode range that extends from –0.3V below V-, up to 44V above V-. The common mode range of the LT6105 is independent of the positive supply voltage. As a result, the device can operate as a high-side or a low-side current sense monitor. The LT6105 can continuously monitor current during a load short or power supply failure, as well as continuously monitor a battery from full charge to depletion. The chip can directly monitor the current on a negative supply voltage and because the inputs of LT6105 can withstand differential voltages up to ±44V, it is ideal for monitoring loads connected through a fuse or a MOSFET switch. The device offers precision with 300uV of input offset voltage and 0.5uV/°C of input offset drift. Any gain between 1 to 100V/V can be designed with external resistors and gain error is limited to less than 1% maximum. The LT6105 operates with an independent supply voltage of 2.85V to 36V and draws 150uA. When powered down, the sense pins are biased off, which prevents any loading of the sense resistor, irrespective of the sense voltage.