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A1569K Datasheet(PDF) 4 Page - Allegro MicroSystems |
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A1569K Datasheet(HTML) 4 Page - Allegro MicroSystems |
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4 / 21 page  Automotive LED Driver with Integrated Hall-Effect Switch A1569K 4 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com ELECTRICAL CHARACTERISTICS: Valid at TA = –40°C to 125°C, VIN = 7 to 24 V (unless otherwise specif ied) Characteristic Symbol Test Conditions Min. Typ.1 Max. Units Electrical Characteristics VIN Functional Operating Range VIN (VDD) Operating, TJ < 165°C 7 – 24 V VIN Quiescent Current IINQ LA connected to VIN, LED off – 6 10 mA VIN Sleep Current IINS SEN_EN and EXT = GND – 10 25 µA Startup Time tON SEN_EN = VIN, |B| < |BRPx| – 5 gauss, RIREF = 600 Ω, CFADE = 100 pF, measured from VIN > 7 V to ILA source > 90% ILAmax – – 1 ms External Response Time tEXT SEN_EN = GND, VIN > 7 V RIREF = 600 Ω, CFADE = 100 pF, measured from EXT > VIH(MIN) to ILA source > 5% ILAmax – – 1 ms Current Regulation Reference Voltage VIREF 267 µA < IREF < 2 mA – 1.2 – V Reference Current Ratio GH (ILA + 0.5) / IREF – 75 – – Current Accuracy2 EILA 20 mA > ILA > 150 mA –5 ±4 5 % Output Source Current ILA SEN_EN = high, BFIELD < BRP – GH × IREF – – RIREF = 600 Ω, SEN_EN = high and BFIELD < BRP, or EXT = high – 150 170 mA Dropout Voltage VDO VIN – VLA , ILA = 150 mA – – 2.4 V VIN – VLA , ILA = 50 mA – 800 – mV Current Slew Time tFADE(MIN) Current rising or falling between 10% and 90%, CFADE = 100 pF – 80 – µs Logic Inputs Input Low Voltage VIL SEN_EN, EXT – – 0.8 V Input High Voltage VIH SEN_EN, EXT 2 – – V Pull-Down Resistor RPD SEN_EN, EXT – 50 – kΩ Input Voltage Range VLOGIC EXT, IREF, THTH, FADE –0.3 – 5.5 V SEN_EN –0.3 – 24 V 1 Typical data is at TA = 25ºC and VIN = 12 V and it is for design information only. 2 When SEN_EN or EXT = high, EILA = 100 × {[( | ILA | + 0.5 ) × RIREF / 90 ] – 1}, with ILA in mA and RIREF in kΩ. Continued on next page... |
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