TLE4241GM

Adjustable Current LITIX™ Linear TLE4241GM Features • • • • • • • • • • • Adjustable constant output current Wide input voltage range Low drop voltage Open load detection Overtemperature protection Short circuit proof Reverse polarity proof Wide temperature range: -40 °C < Tj < 150 °C Very small SMD-Package Green Product (RoHS compliant) AEC Qualified P-DSO-8-3, -6, -7, -8, -9 Functional Description The TLE4241GM is an integrated adjustable constant current source. It provides an output current adjustable via different means (SET, PWM, reference resistor) which is kept nearly independent from load and supply voltage changes. The IC is designed to supply LEDs under the severe conditions of automotive applications resulting in constant brightness and extended LED lifetime. It is provided in the very small P-DSO-8-9 (Micro 8) package. Protection circuits prevent damage to the device in case of overload, short circuit, reverse polarity and overtemperature. The connected LEDs are protected against reverse polarity as well as excess voltages up to 45 V. A status output allows handling of open load and short circuit at the main output. A PWM input offers the possibility to adjust the LED brightness by pulse width modulation. With an implemented high/low current switch the output current level can be reduced e.g. for brake/tail light application. The implemented features such as adjustable output current, the high/low current switch and the provided PWM input make the device well suited for a broad range of LED and other applications. Type Package TLE4241GM P-DSO-8-9 Data Sheet 1 Rev. 1.4, 2015-10-05 TLE4241GM Circuit Description Q ST Status I Regulation High Control PWM SET Reference Voltage GND Figure 1 V/I Converter Regulation Low REF AEB03003 Block Diagram An internal reference voltage of typ. 1.20 V supplies the REF pin which is connected to GND via an external resistor. In the SET = H mode the reference current flowing on the REF pin is mirrored with an amplification to form the desired output current. The typ. output current in the SET = H mode calculates: 1.20 I Q, typ /mA = ---------------------- × 487 + 0.1 R REF /kΩ (1) The output current is shown as a function of the reference resistance on Page 10 for the high as well as for the low current mode. With the PWM input the LED brightness can be regulated via duty cycle. Also PWM = L sets the TLE4241 in sleep mode resulting in a very low current consumption of H tSET,H – – 30 μs 20%/80% IQ, see Figure 4 Delay time H -> L tSET,L – – 30 μs 20%/80% IQ, see Figure 4 Vdr,L 0.15 – – V (VI - VQ) decreasing SET = L 0.15 – – V (VI - VQ) decreasing SET = H – – 0.7 V (VI - VQ) increasing SET = L – – 0.7 V (VI - VQ) increasing SET = H Turn off delay time SET Input SET high level SET low level SET input current high level Status Output Lower status switching threshold Upper status switching threshold Vdr,H Status low voltage VSTL – – 0.4 V (VI - VQ) < Vdr,L IST = 1.0 mA Leakage current ISTLK – – 10 μA (VI - VQ) > Vdr,H VST = 5.0 V Data Sheet 9 Rev. 1.4, 2015-10-05 TLE4241GM Typical Performance Characteristics Output Current versus External Resistor, SET = H Output Current versus External Resistor, SET = L AED03333.VSD 100 IQ mA IQ mA SET = H VQ = 6 V 80 16 70 14 60 12 50 10 40 8 30 6 20 4 10 2 0 5 10 0 50 kΩ 100 20 AED03334.VSD 20 SET = L VQ = 6 V 5 10 50 kΩ 100 20 RREF RREF Output Current versus Supply Voltage, SET = L Output Current versus Supply Voltage, SET = H AED03335.VSD 100 IQ mA IQ mA VQ = 6 V RREF = 10 kΩ 80 14 60 12 50 10 40 8 30 6 20 4 10 2 0 5 10 15 20 25 30 0 V 40 VI Data Sheet VQ = 6 V RREF = 10 kΩ 16 SET = H 70 0 AED03336.VSD 20 SET = L 0 5 10 15 20 25 30 V 40 VI 10 Rev. 1.4, 2015-10-05 TLE4241GM Reference Voltage versus Junction Temperature AED03340.VSD 1.25 VREF V RREF = 10 kΩ 1.23 1.21 1.19 1.17 1.15 -40 0 40 80 °C 160 Tj Data Sheet 11 Rev. 1.4, 2015-10-05 TLE4241GM PWM Pin Input Current versus PWM Voltage IPWM PWM Pin Input Current versus PWM Voltage AED03332.VSD 2.0 mA IPWM 1.5 300 1.0 200 0.5 100 0 0 5 10 15 20 25 30 0 V 40 AED03331.VSD 400 µA 0 1 2 3 4 5 6 VPWM SET Pin Input Current versus SET Voltage ISET SET Pin Input Current versus SET Voltage AED03338.VSD 2.5 V 8 VPWM mA ISET AED03337.VSD 400 µA 2.0 300 1.5 200 1.0 100 0.5 0 0 5 10 15 20 25 30 0 V 40 1 2 3 4 5 6 V 8 VSET VSET Data Sheet 0 12 Rev. 1.4, 2015-10-05 TLE4241GM Package Outlines 1.27 0.1 0.41 +0.1 -0.06 0.19 +0.06 B 0.64 ±0.25 0.2 M A B 8x 8 5 Index Marking 1 4 5 -0.21) 8° MAX. 4 -0.21) 1.75 MAX. 0.175 ±0.07 (1.45) 0.35 x 45° 6 ±0.2 A 1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Lead width can be 0.61 max. in dambar area GPS01229 Figure 5 P-DSO-8-9 (Plastic Dual Small Outline) Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020). You can find all of our packages, sorts of packing and others in our Infineon Internet Page “Products”: http://www.infineon.com/products. Dimensions in mm SMD = Surface Mounted Device Data Sheet 13 Rev. 1.4, 2015-10-05 TLE4241GM Revision History Version Date Rev. 1.2 2004-04-13 Page 4, 9: Improved indication and explanation of the open load detection function. Rev. 1.3 2007-03-19 Initial version of RoHS-compliant derivate of TLE4241GM Page 1: AEC certified statement added Page 1 and Page 13: RoHS compliance statement and Green product feature added Page 1 and Page 13: Package changed to RoHS compliant version Legal Disclaimer updated Rev. 1.4 2015-07-09 Electrical Characteristics updated Page 8 Data Sheet Changes 14 Rev. 1.4, 2015-10-05 Edition 2015-10-05 Published by Infineon Technologies AG 81726 Munich, Germany © 2004 Infineon Technologies AG All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. 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