Low Dropout Linear LED Driver TLE 4240-2/3 M Features • • • • • • • • • • • Typ. 58 mA constant output current Low dropout voltage Tiny SMD package PG-SCT595-5 Open load detection (Version TLE 4240-3 M only) 45 V input voltage operation range Safe operation area monitoring Output protected against short circuit to GND and supply Reverse polarity protection Wide temperature range: -40 °C ≤ Tj ≤ 150 °C Overtemperature shutdown Suitable for use in automotive electronics PG-SCT-595 Functional Description The TLE 4240-2/3 M is a monolithic integrated low dropout linear constant current source. It is designed to supply white or color LEDs in order to achive constant brightness and extended LED lifetime independent from supply voltage or LED forward voltage class. Protection circuits prevent from damage to the device in case of overload, short circuit, reverse polarity and overheat. The LEDs connected are protected against reverse polarity transients as well as against voltages up to 45 V. The Safe Operation Area (SOA) monitoring function limits the output current in case of a very high drop voltage across the regulator. For details see graph “Output Current versus Drop Voltage”. Version TLE 4240-3 M is equipped with a status output indicating an open load failure condition. The TLE 4240-2/3 M is supplied in a space-saving PG-SCT595-5 package offering minimal thermal resistance. Type Package Remark Marking TLE 4240-2 M PG-SCT595-5 – 42 TLE 4240-3 M PG-SCT595-5 Open load detection 43 Datasheet 1 Rev. 1.1, 2006-12-07 TLE 4240-2/3 M n.c. ST 1 5 GND 2 I 3 4 1 GND Q Pinout.vsd GND 2 I 3 5 GND 4 Q P inout.vsd TLE 4240-2 M TLE 4240-3 M Figure 1 Pin Configuration (top view) Table 1 Pin Definitions and Functions Pin No. Symbol Function 1 n.c. Version TLE 4240-2 M only: Internally not connected. 1 ST Version TLE 4240-3 M only: Status output; open collector output. Low level indicates open load. Connect to a positive voltage rail with an external pull-up resistor. Leave open, if not needed. 2 GND Ground; connect to heatsink area. Interconnect with pin 5. 3 I Input; IC supply 4 Q Output; 5 GND Ground; connect to heatsink area. Interconnect with pin 2. Datasheet 2 Rev. 1.1, 2006-12-07 TLE 4240-2/3 M TLE 4240-2 M Figure 2 TLE 4240-3 M Block Diagram VBAT 5V TLE 4264 Voltage Regulator µC 4k7 I/O Open Load ST Open Load Status Output at Version TLE 4240-3 only I Q TLE 4240-2 TLE 4240-3 GND TLE4240-2_A pplication.vsd Figure 3 Datasheet Typical Application Circuit 3 Rev. 1.1, 2006-12-07 TLE 4240-2/3 M Table 2 Absolute Maximum Ratings -40 °C ≤ Tj ≤ 150 °C Parameter Symbol Limit Values Unit Remarks Min. Max. VI II -16 45 V – – – mA internally limited VQ IQ -1 40 V – – – mA internally limited VST IST -0.3 12 V – – – mA internally limited VESD,HBM VESD,CDM VESD,HBM VESD,CDM 4 – kV TLE 4240-2 M; HBM 1) 2 – kV TLE 4240-2 M; CDM 2) 2 – kV TLE 4240-3 M; HBM 1) 2 – kV TLE 4240-3 M; CDM 2) Tj Tstg -40 150 °C – -50 150 °C – Input I Voltage Current Output Q Voltage Current Status ST (TLE 4240-3 M) Voltage Current ESD Susceptibility ESD Resistivity ESD Resistivity Temperatures Junction temperature Storage temperature 1) ESD susceptibility “human body model (HBM)” according to JESD22-A114. 2) ESD susceptibility “charged device model (CDM)” according to JESD22-C101 Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Integrated protection functions are designed to prevent IC destruction under fault conditions described in the data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are not designed for continuous repetitive operation. Datasheet 4 Rev. 1.1, 2006-12-07 TLE 4240-2/3 M Table 3 Functional Range Parameter Symbol Input voltage Status output voltage (Version TLE 4240-3 M only) Junction temperature Table 4 Limit Values Unit Remarks Min. Max. VI VST 3 45 V – – 15 V – Tj -40 150 °C – Thermal Resistance Parameter Symbol Typ. Limit Unit Values Remarks Junction ambient Rth,j-a Rth,j-pin5 Junction pin 5 179 K/W A: footprint only1) 99 K/W A = 300 mm 1) 87 K/W A = 600 mm 1) 26 K/W measured to pin 5 1) Mounted an a PCB 80 × 80 × 1.5 mm3, horizontal position, zero airflow. Table 5 Electrical Characteristics VI = 13.5 V; VQ = 6 V; -40 °C ≤ Tj ≤ 150 °C; unless otherwise specified Parameter Symbol Limit Values Unit Test Condition Min. Typ. Max. 51 57 63 mA 46 58 70 mA – 0.5 0.7 V Regulator: Output current Dropout voltage Vdr = VI - VQ Datasheet IQ Vdr 5 Tj = 100 °C 9 V ≤ VI ≤ 16 V Tj ≤ 125 °C IQ = 40 mA Rev. 1.1, 2006-12-07 TLE 4240-2/3 M Table 5 Electrical Characteristics (cont’d) VI = 13.5 V; VQ = 6 V; -40 °C ≤ Tj ≤ 150 °C; unless otherwise specified Parameter Symbol Unit Test Condition Min. Typ. Max. -5 – – mA -5 – – mA Current consumption Iq = II - IQ Iq – 7 10 mA VI = -16 V VQ = 0 V VI = 0 V VQ = 16 V Vdr = 1 V Current consumption open load Version TLE 4240-3 M Iq – 30 40 mA IQ = 0 mA 0.8 V Ramping down (VI - VQ) IST = 1 mA IQ = 5 mA VST = 1 V Reverse output current IQ Limit Values Open Load Detection (Version TLE 4240-3 M only): Lower status switching threshold VIQ,L = VI - VQ VIQ,L – – Status Output ST (Version TLE 4240-3 M only): Status low voltage VST,low – – 0.4 V Status sink current limitation IST,MAX 1.5 – – mA Status leakage current IST,high – – 2 µA Datasheet 6 VST = 5 V (VI - VQ) > 1 V Rev. 1.1, 2006-12-07 TLE 4240-2/3 M Typical Performance Characteristics Current Consumption Iq vs. Drop Voltage Vdr = (VI - VQ) Current Consumption Iq vs. Output Current IQ Iq-IQ.vsd Iq-V dr.vsd I q [mA] I q [mA] T j = 25 °C VQ = 4.5 V 8 16 VQ = 7 V Tj = -40 °C 6 12 4 8 VQ = 11 V 2 T j = 25 °C 4 T j = 150 °C VQ = 22 V 0 1 2 3 20 0 4 40 60 IQ [mA] V dr [V] Output Current IQ vs. Input Voltage VI ;VQ = 6 V Dropout Voltage Vdr vs. Junction Temperature Tj I Q [mA] V dr,min VQ = 6 V Tj = 25 °C VDR,MIN-TJ.VSD 0.7 IQ-VI.vsd [V] 60 0.5 50 T j = 125 °C 40 0.4 30 0.3 20 0.2 0 10 20 30 0.1 -40 -20 40 IQ = 40 mA 0 20 40 60 80 100 120 140 T j [°C] VI [V] Datasheet I Q = 50 mA 7 Rev. 1.1, 2006-12-07 TLE 4240-2/3 M Typical Performance Characteristics Output Current IQ vs. Junction Temperature Tj Output Current IQ vs. Drop Voltage Vdr (SOA) IQ-Tj.vsd SOA .vsd IQ 70 [mA] VQ = 7 V [mA] VI = 13.5 V VQ = 7 V IQ T j = 25 °C 60 60 50 55 40 50 30 45 -40 -20 0 20 40 60 80 100 120 140 8 0 16 32 24 T j [°C] Vdr [V] Reverse Current IQ versus Reverse Input Voltage VI Reverse Current II versus Reverse Input Voltage VI IQrev-V I.vsd IQ IIrev-V I.vsd II VQ = 0 V [mA] VQ = 0 V [mA] -0.5 -10 Tj = -40 °C -1 -20 T j = 25 °C Tj = 150 °C -1.5 -30 -2 -40 -32 -24 -16 0 -8 -32 VI [V] Datasheet -24 -16 0 -8 VI [V] 8 Rev. 1.1, 2006-12-07 TLE 4240-2/3 M Typical Performance Characteristics Reverse Output Current IQ versus Output Voltage VQ Current Consumption Iq in open load condition vs. Tj Iq,NL-Tj.vsd IQrev-VQ.vsd IQ Iq VI = 0 V [mA] VI = 13.5 V Q : open [mA] -1 32 -2 TLE 4240-3 (w/ status output ST) 24 T j = -40 °C -3 16 T j = 150 °C -4 8 TLE 4240-2 (no status output) 0 8 16 24 32 -40 -20 20 40 60 80 100 120 140 T j [°C] VQ [V] Datasheet 0 9 Rev. 1.1, 2006-12-07 TLE 4240-2/3 M Package Outline <GPW05997> Footprint Reflow Soldering Figure 4 Footprint Wave Soldering PG-SCT595-5 Find all packages, sorts of packing and others at Infineon Internet Page “Packages”: http://www.infineon.com/packages. Dimensions in mm SMD = Surface Mounted Device Datasheet 10 Rev. 1.1, 2006-12-07 Edition 2006-12-07 Published by Infineon Technologies AG, 81726 München, Germany © Infineon Technologies AG 2006. All Rights Reserved. Attention please! The information given in this data sheet shall in no event be regarded as a guarantee of conditions or characteristics (“Beschaffenheitsgarantie”). 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 your nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements components may contain dangerous substances. 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