Arrow Plastic Network Card manual Infineon LED Sample Kit LED Driver Brochure available

POWER AND LINEAR IC

SOLUTIONS

Efficient, Intelligent Solutions for

LED Lighting Applications

Comprehensive range of solutions meets the evolving requirements of lighting applications

Infineon

LED Sample

Kit and

LED Driver

Brochure available!

LEDs and LED displays suffer varying illumination levels as the power supply voltage changes. This affects displays used in automotive applications, battery operated handheld devices or fixed architectural installations.

To keep LED brightness constant needs a stable current over the anticipated variation in power supply voltage. The usual method of a resistor in series with the LEDs has serious drawbacks: the resistor must present a large near-infinite resistance but this produces a large voltage drop across it. Additional parallel resistors are necessary to drive a given number of LEDs, increasing current consumption. Secondly, series resistors waste power as heat.

Infineon’s LED driver family overcomes all the drawbacks and offers an easy, cost effective and reliable way to achieve LED current stabilisation. The BCR 401R, BCR 402R, BCR 402U and BCR 405U cover the most common LED supply current ranges, 10mA, 20mA and 50mA and enable easy adjustment upwards from the nominal driver current value by adding a single external resistor. Voltage drop with these ICs is only 0.75V, maximising DC efficiency. A negative temperature coefficient protects LEDs against thermal runaway. The ICs are small, in surface mounted SOT143R packages.

For applications requiring even higher LED currents, Infineon offers powerful linear and DC/DC switched constant-current drivers. The TLE 424x linear LED driver family consists of three different drivers covering a current range from 60mA (TLE 4240-3) to 500mA (TLE 4242G). All parts have on-chip diagnostics and comprehensive protection mechanisms. Maximum permissible input voltage is 45V, making this part attractive also for higher board voltages (for trucks, tractors etc.). All parts are ROHS compliant and available in the full automotive temperature range, -40°C to +150°C.

High brightness LEDs with currents exceeding the 500mA limit can be driven with Infineon’s DC/DC switched constant-current LED drivers, offering solutions up to 2.3A continuous current. In terms of highest input voltage and output current, the TLE 6389-2GV is an excellent choice with 60V maximum input voltage and 2.3A maximum output current. This part combines high output voltage accuracy with special features like reset circuitry and battery low detector.

In terms of highest integration and small package solutions, Infineon is also offering a 1.8A DC/DC switching regulator in a PG-SO8 package. The TLE8366-GV incorporates the control IC, power switch and protection circuitry. Moreover only five or six additional external parts are necessary to realise a switched regulator.

Features

UBCR 401R

-Low cost

-Few external parts

-Easy to use and fast

-Small SOT143R packaging (2.9mm x 1.6mm x 1.1mm incl. leads)

UTLE 4240-3GM

-Low cost, automotive qualified

-60mA

-Protected against short circuit to GND or Vbat, reverse polarity, overtemperature

-SCT-595 package

UTLE 4241GM

-Adjustable output current up to 70mA

-Protected against short circuit, reverse polarity, overtemperature

-Open load detection/diagnosis

-PG-SO8 package, automotive qualified

UTLE 4242G

-Up to 500mA output current, adjustable

-Comprehensive protection features

-PWM logic level input

-Status/diagnostic output

-D2PAK package, automotive qualified

UTLE 8366EV

-Up to 1.8A adjustable output current

-Efficient DC/DC switching regulator with 370kHz switching frequency

-Integrated power stage, soft start, synchronisation input

-PG-SO8 package, fully automotive qualified

UTLE 6389-2GV

-Up to 2.3A adjustable output current with high accuracy of ±3%

-60V maximum input voltage

-Driver output for external power switch

-PWM input, reset generator, sync input and low battery detector

-PG-DSO14 package, fully automotive qualified

24 ENQUIRY 1468

For further information, including the Infineon LED Driver Brochure and how to obtain a Sample Kit, please complete the reply slip or visit http://www.arrowne.com/innov/in220/f_1468.shtml