UPBLED470L LOW VOLTAGE BLUE LED P RODUCT P REVIEW KEY FEATURES IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com ABSOLUTE MAXIMUM RATINGS AT 25º C (UNLESS OTHERWISE SPECIFIED) Parameters Symbol Value Unit DC Forward Drive Current IF 30 mA Peak Forward Current IFP 100 mA LED Operating Junction Temperature Tj -40 to +150 °C Reverse Voltage VR 8 V Power Dissipation PD 125 mW Operating Temperature TOPR -40 to +125 °C Storage Temperature TS -45 to +150 °C Electrostatic Discharge ESD 1000 V ESD classification WWW . Microsemi .C OM Microsemi’s high brightness UPBLED470L product is a new LED which features a low forward voltage for low power consumption. This offers impressive brightness with industry leading thermal resisitivity. These products deliver superior thermals that keep junction temperatures low with a remarkable package thermal resisitivity of 110 degrees C/Watt. The blue packages also deliver a very wide viewing angle able to easily integrate into optical lenses. The Optomite package performs extremely well under extreme temperature conditions with less wavelength shift and intensity degradation seen by many competitors. Low Thermal Resistance Rugged Optomite 0603 package Low forward voltage High Brightness Broad angular Emission APPLICATIONS/BENEFITS Mobil Phone Keypad Panel, button, switch indicators. Backlighting Signage Signals and Marker Lights Class 2 THERMAL CHARACTERISTICS (UNLESS OTHERWISE SPECIFIED) Thermal Resistance Junction-to Soldering Point Symbol RθJS Value 110 Units °C/W UPBLED-470L For operation of these LEDs in pulse mode applications, devices may be used in conjunction with the Microsemi LX1992LED Drivers Copyright 2002 Rev. 0.02, 2003-01-15 Microsemi 580 Pleasant Street, Watertown, MA. 02472-2408, 617-926-0404, Fax: 617-924-1235 Page 1 UPBLED470L LOW VOLTAGE BLUE LED P RODUCT P REVIEW ELECTRICAL PARAMETERS @ 25°C & ID=20 mA (unless otherwise specified) Symbol Radiant Intensity IE Luminous Intensity IV Dominant Wavelength λDOM Chrom x Chrom y Angle Coverage to 50% points α1/2 Radiant Flux ΦE Luminous Flux ΦV FWHM Full Width Half Max Test Conditions Min Typ. DC Drive Current = 5mA 180 DC Drive Current = 10mA 350 DC Drive Current = 20mA 645 DC Drive Current = 30mA DC Drive Current = 5mA 900 15 DC Drive Current = 10mA 26 Max Units µW/sr mcd DC Drive Current = 20mA 35 45 DC Drive Current = 30mA 60 DC Drive Current = 20mA 469 DC Drive Current = 20mA .137 .066 nm 140 DC Drive Current = 5mA to 50mA deg. DC Drive Current = 5mA 0.5 DC Drive Current = 10mA 0.92 DC Drive Current = 20mA 1.7 DC Drive Current = 30 mA DC Drive Current = 5mA 2.4 45 DC Drive Current = 10mA 75 DC Drive Current = 20mA 125 DC Drive Current = 30mA 170 DC Drive Current = 20mA 33 DC Drive Current = 5mA 2.88 DC Drive Current = 10mA 2.97 DC Drive Current = 15mA 3.05 DC Drive Current = 20mA 3.11 DC Drive Current = 30mA 3.22 mW mlm nm 3.1 Forward Voltage VF Reverse Leakage Current • • IR Reverse Voltage = 5 V V 10 µA Change in Radiant Intensity with temperature –1.2µW/sr/°C (25°C < temp< 85°C) Change in Radiant Intensity with temperature 0.6µW/sr/°C (25°C < temp< -40°C) Copyright 2002 Rev. 0.02, 2003-01-15 Microsemi 580 Pleasant Street, Watertown, MA. 02472-2408, 617-926-0404, Fax: 617-924-1235 Page 2 WWW . Microsemi .C OM Characteristic UPBLED470L LOW VOLTAGE BLUE LED P RODUCT P REVIEW WWW . Microsemi .C OM DIRECTIVITY Polar plot of angular Intensity % TYPICAL ANGULAR DISTRIBUTION OF RADIANT AND LUMINOUS INTENSITY Polar Plot of Rel. Ang. Intensity 0.75 0.5 UPBLED470L Relative Angular Intensity (%) 1 0.25 Angle -90° to +90° Copyright 2002 Rev. 0.02, 2003-01-15 Microsemi 580 Pleasant Street, Watertown, MA. 02472-2408, 617-926-0404, Fax: 617-924-1235 Page 3 UPBLED470L LOW VOLTAGE BLUE LED P RODUCT P REVIEW WWW . Microsemi .C OM BOTTOM VIEW Notes: Anode is identified by observing the underside of the LED. (Anode is the smaller of the two base pads) Mount to circuit board using 60/40 Pb/Sn or equivalent. Maximum solder melt exposure temperature is 260°C for 10 seconds. TAPE AND REEL 3,000 units/reel Notes: Dimensions is shown in metric. MECHANICAL Copyright 2002 Rev. 0.02, 2003-01-15 Microsemi 580 Pleasant Street, Watertown, MA. 02472-2408, 617-926-0404, Fax: 617-924-1235 Page 4 UPBLED470L LOW VOLTAGE BLUE LED P RODUCT P REVIEW Thermal Resistance (°C/watt) WWW . Microsemi .C OM Thermal Resistance vs Power-On time 150 100 50 1 10 3 0.01 0.1 Power-On time (sec) 1 Steady State Thermal Resistance Junction-to-Optomite base metal ~ 110°C Thermal time constant ~20 mS (@ 0.632 x Rθmax). Steady state temperature at ~ 500 mS. Copyright 2002 Rev. 0.02, 2003-01-15 Microsemi 580 Pleasant Street, Watertown, MA. 02472-2408, 617-926-0404, Fax: 617-924-1235 Page 5 UPBLED470L LOW VOLTAGE BLUE LED P RODUCT P REVIEW WWW . Microsemi .C OM 50 45 DC Drive Current (mA) 40 35 30 25 20 15 10 5 0 2.8 2.9 3 3.1 3.2 Forward Voltage (volt) 3.3 3.4 100 Luminous Intensity (mcd) 90 80 70 60 50 40 30 20 10 0 0 Copyright 2002 Rev. 0.02, 2003-01-15 10 20 30 DC Drive Current (mA) 40 50 Microsemi 580 Pleasant Street, Watertown, MA. 02472-2408, 617-926-0404, Fax: 617-924-1235 Page 6 UPBLED470L LOW VOLTAGE BLUE LED P RODUCT P REVIEW CALCULATION FOR SAFE OPERATION ABOVE 20 ma dc: WWW . Microsemi .C OM The power dissipation must be held at a level to maintain the junction below the maximum specified operating temperature. Duty cycle control may be used to establish the safe operating condition using a train of pulses. LED Junction temperature may be calculated by use of the following: TJ T Case V F . I Dpk. t p . Rθ JS τ 1 tp τ . Zθ τ tp Zθτ Zθtp TCase is at a specified temperature. VF and IDpk values are read off graph of forward voltage vs drive current. tp and τ are set by the on-time and pulse period of the drive circuit. Thermal Impedances (Zθ) and Thermal resistance (Rθ) values are read from Thermal Impedance graph. Conversion of 1931 x y coordinates to 1960 u v coordinates: u = 4x/(-2x + 12y + 3) , v = 6y/(-2x + 12y +3) Conversion of 1960 u v coordinates to 1931 x y coordinates: x = 3u/(2u – 8v +4), y = 2v/(2u –8v +4). UPBLED470L Copyright 2002 Rev. 0.02, 2003-01-15 Microsemi 580 Pleasant Street, Watertown, MA. 02472-2408, 617-926-0404, Fax: 617-924-1235 Page 7