BCR431UXTSA1

BCR431U Low Voltage Drop LED Driver IC Features • • • • • Supply voltage from 6 V to 42 V Controls up to 36.5 mA LED current Max. 200 mV saturation voltage at 32.8 mA LED current precision ±10 % Smart over temperature protection function Advantages with respect to discrete solutions • • • • Low BOM count Lower assembly cost Smaller form factor Higher reliability due to less parts and soldering joints Potential Applications • • • • LED strips LED displays and channel letters Architectural and landscape lighting Retail lighting Product Validation • Qualified for industrial applications according to the relevant tests of JEDEC47/20/22 Product Name Package BCR431U PG-SOT23-6 Description BCR431U is a linear LED driver IC in a small PG-SOT23-6 package regulating the LED current in standalone operation without any external power transistor. The IC supply voltage range is from 6 V up to 42 V. The LED current level can be adjusted up to 36.5 mA connecting a high ohmic resistor Rset to pin RS. The maximum voltage drop at the integrated LED driver stage is 200 mV at 32.8 mA improving the overall system efficiency and providing extra voltage headroom to compensate for tolerances of LED forward voltage or supply voltage. The smart over temperature protection function reduces the LED current when junction temperature of BCR431U is very high. Datasheet www.infineon.com Please read the Important Notice and Warnings at the end of this document 1.0 2020-03-03 BCR431U Low Voltage Drop LED Driver IC Table of contents Table of contents Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Advantages with respect to discrete solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Potential Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 Electrical characteristics and parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Datasheet 2 1.0 2020-03-03 BCR431U Low Voltage Drop LED Driver IC Application circuit 1 Application circuit ILED Vsupply BCR431U 1 N.C. Regulator TSD Band gap & Bias generator 2 5 N.C. Current generator Driver C* 4 RS VS TSD: Thermal shutdown Figure 1 LED GND 3 Rset 6 Typical Application Circuit of BCR431U * A ceramic capacitor of 10nF in parallel to LED pin needed for a long line to compensate parasitic line inductance. 2 Pin configuration Pin No. Pin Name Pin Type Function 1 N.C. - Not connected 2 GND GND IC ground & thermal connection to heat spreader on PCB 3 RS Output Connection of Rset resistor 4 VS Input Supply voltage 5 N.C. - Not connected 6 LED Input Driver pin to control the LED current Figure 2 Datasheet Pinout BCR431U 3 1.0 2020-03-03 BCR431U Low Voltage Drop LED Driver IC Functional description 3 Functional description LED current configuration The LED current is configured by the external resistor Rset at pin RS. The current flowing into pin LED is proportional to the current flowing out of pin RS by a ratio of about 760:1. Therefore, the LED current depends on the value of Rset. Figure 3 Datasheet Relation between ILED and Rset 4 1.0 2020-03-03 BCR431U Low Voltage Drop LED Driver IC Functional description Smart over temperature protection function BCR431U reduces the LED current with increasing junction temperature by reducing the voltage at pin RS. The reduced voltage of pin RS drives less current through the external resistor Rset, causing the current into pin LED to reduce. The LED current is never turned off fully. 100 ILED [%] 75 50 TJ [°C] Figure 4 Relative reduction of LED current versus junction temperature of BCR431U Maximum Permitted Power Dissipation To avoid damage of the IC the power dissipation of BCR431U must be reduced with increasing ambient temperature according to Figure 5. 0.7 0.6 0.5 Ptot [W] 0.4 0.3 0.2 0.1 0 0 20 40 60 80 100 120 140 160 TA [degC] Figure 5 Datasheet Maximum permitted total power dissipation of BCR431U on a JESD 51-7 board 5 1.0 2020-03-03 BCR431U Low Voltage Drop LED Driver IC Electrical characteristics and parameters 4 Electrical characteristics and parameters Table 1 Maximum Ratings at TA = 25 °C, unless otherwise specified Parameter Symbol Values Min. Unit Typ. Max. Note or test condition Junction temperature TJ -40 - 150 °C Supply voltage VS 0 - 45 V Voltage at LED pin VLED 0 - 15 V Driver LED current ILED 0 - 42 mA RS maximum voltage VRS 0 - 5 V RS output current IRS 0 - 60 µA Power dissipation Ptot - - 600 mW JESD 51-7 test board, TA ≤ 36 °C ESD robustness VESD,HBM 6 - - kV HBM according to JEDEC JS-001 Attention: Stresses above the max. values listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Maximum ratings are absolute ratings; exceeding only one of these values may cause irreversible damage to the integrated circuit. These values are not tested, only production test. Table 2 Thermal Resistance at TA = 25 °C, unless otherwise specified Parameter Symbol Values Min. Thermal resistance junction to ambient Thermal resistance junction to soldering pint Table 3 Parameter Typ. Datasheet Note or Test Condition Max. RthJA,1s0p,0 - - 288 K/W JEDEC 1s0p (JESD 51-3) footprint w/o extra cooling area RthJA,1s0p,300 - - 182 K/W JEDEC 1s0p (JESD 51-3) with 300 mm² cooling area connected to GND pin RthJA,2s2p - - 190 K/W JEDEC 2s2p (JESD 51-7) RthJS - 70 - K/W Electrical Characteristics at TA = 25 °C, unless otherwise specified Symbol Values Min. Supply voltage Unit VS 6 6 Typ. - Unit Note or Test Condition V Operational voltage range Max. 42 1.0 2020-03-03 BCR431U Low Voltage Drop LED Driver IC Electrical characteristics and parameters Table 3 Electrical Characteristics at TA = 25 °C, unless otherwise specified (continued) Parameter Symbol Values Min. Supply current IS Typ. Unit Note or Test Condition mA VLED = 1 V, Rset = 24.9 kΩ, VS = 6 V Max. - - 1.8 - - 2 VLED = 1 V, Rset = 24.9 kΩ, VS = 42 V Driver LED capability ILED 32.8 - - mA VLED = 1 V, Rset = 24.9 kΩ Driver LED current by Rset ILED - 8 - mA Rset = 114 kΩ, VLED =1 V, VS = 24 V - 10 - Rset = 90.9 kΩ, VLED = 1 V, VS = 24 V - 15 - Rset = 60.4 kΩ, VLED = 1 V, VS = 24 V - 20 - Rset = 45.3 kΩ, VLED = 1 V, VS = 24 V - 24 - Rset = 36.5 kΩ, VLED = 1 V, VS = 24 V - 36.5 - Rset = 24.9 kΩ, VLED = 1 V, VS = 24 V Driver saturation voltage VLED,sat - - 200 mV ILED = 32.8 mA, Rset = 24.9 kΩ, VS = 6 V Driver saturation voltage VLED,sat - - 200 mV ILED = 32.8 mA, Rset = 24.9 kΩ, VS = 24 V RS pin voltage VRS 1.172 1.197 1.22 V Rset = 45.3 kΩ, VLED = 1 V, VS = 24 V VLED pin leakage current IVLED,leak - - 350 μA Rset opened, VLED = 15 V, VS = 42 V Datasheet 7 1.0 2020-03-03 BCR431U Low Voltage Drop LED Driver IC Package dimensions Package dimensions 1) 1) 2.9 8° 1.25 ±0.2 0 °. . +0.075 (0.85) 0.15 C D 2x 0.25 GAUGE P LANE 0.15 C A-B 2x 1.6 0.1 25 -0.0 45 0.1 ±0.05 S TAND OFF 1.15 ±0.15 5 0.45 ±0.1 C 0.1 C S EATING COP LANARITY P LANE 0.4 ±0.1 0.2 C A B 6x BOTTOM VIEW A 6 1 INDEX MARKING 0.2 C 6x 2.8 D 4 4 6 3 3 1 B 0.95 1) DOES NOT INCLUDE P LAS TIC OR METAL P ROTRUS ION OF 0.15 MAX. P ER S IDE ALL DIMENS IONS ARE IN UNITS MM THE DRAWING IS IN COMP LIANCE WITH IS O 128 & P ROJ ECTION METHOD 1 [ Figure 6 Datasheet ] Package outline PG-SOT23-6 8 1.0 2020-03-03 BCR431U Low Voltage Drop LED Driver IC Package dimensions Figure 7 Datasheet Footprint PG-SOT23-6 9 1.0 2020-03-03 BCR431U Low Voltage Drop LED Driver IC References 4 0.25 3.2 8 4 P IN 1 INDEX MARKING 3.3 ALL DIMENS IONS ARE IN UNITS MM THE DRAWING IS IN COMP LIANCE WITH IS O 128 & P ROJ ECTION METHOD 1 [ Figure 8 Tape & Reel PG-SOT23-6 6 References 1.55 ] Revision history Document version Date of release Description of changes 1.0 2020-03-03 First data sheet release Datasheet 10 1.0 2020-03-03 Trademarks All referenced product or service names and trademarks are the property of their respective owners. Edition 2020-03-03 Published by Infineon Technologies AG 81726 Munich, Germany © 2020 Infineon Technologies AG All Rights Reserved. Do you have a question about any aspect of this document? Email: erratum@infineon.com Document reference IFX-jwu1549524732233 IMPORTANT NOTICE The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics (“Beschaffenheitsgarantie”) . With respect to any examples, hints or any typical values stated herein and/or any information regarding the application of the product, 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. In addition, any information given in this document is subject to customer’s compliance with its obligations stated in this document and any applicable legal requirements, norms and standards concerning customer’s products and any use of the product of Infineon Technologies in customer’s applications. The data contained in this document is exclusively intended for technically trained staff. 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