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A6282EESTR-T Datasheet(PDF) 6 Page - Allegro MicroSystems |
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A6282EESTR-T Datasheet(HTML) 6 Page - Allegro MicroSystems |
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6 / 13 page  16-Channel Constant-Current LED Driver A6282 6 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com ELECTRICAL CHARACTERISTICS (continued), at TA1 = 25°C, VDD = 3.0 to 5.5 V, unless otherwise noted Characteristic Symbol Test Conditions Min. Typ.2 Max. Unit SWITCHING CHARACTERISTICS at TA1 = 25°C, VDD = VIH = 5.0 V, VDS = 1 V, VIL = 0 V, REXT = 910 Ω, IO = 21.4 mA, VL = 2 V, RL = 51 Ω, CL = 15 pF (see also Timing Diagrams section) Characteristic Symbol Test Conditions Min. Typ.2 Max. Unit Clock Frequency fCLK CLK – – 30 MHz Clock Frequency (cascaded devices) fCLKC CLK – – 25 MHz Clock Pulse Duration twh0 CLK = high 16 – – ns LE Pulse Duration twh1 LE = high 20 – – ns Setup Time tsu0 SDI to CLK↑ 10 – – ns tsu1 CLK↑ to LE↑ 10 – – ns Hold Time th0 CLK↑ to SDI 10 – – ns th1 LE↓ to CLK↑ 10 – – ns Rise Time tr0 SDO, 10/90% points (measurement circuit A) – – 16 ns tr1 OUTx, VDD = 5 V,10/90% points (measurement circuit B) – 10 30 ns Fall Time tf0 SDO, 10/90% points (measurement circuit A) – – 16 ns tf1 OUTx, VDD = 5 V,10/90% points (measurement circuit B) – 10 30 ns Propagation Delay Time tpd0 CLK↑ to SDO↑↓ (measurement circuit A) – – 30 ns tpd1 ¯O¯¯¯E¯↓ to OUTx↑↓ (measurement circuit B) – – 60 ns tpd2 LE↑ to OUTx↑↓ (measurement circuit B) – – 60 ns Output Enable Pulse Duration tw(OE) (see Timing Diagrams section) 60 – – ns 1Tested at 25°C. Specifications are assured by design and characterization over the operating temperature range of –40°C to 85°C. 2Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions. Performance may vary for individual units, within the specified maximum and minimum limits. Thermal Shutdown Temperature TJTSD Temperature increasing – 165 – °C Thermal Shutdown Hysteresis TJTSDhys –15–°C Reference Voltage at External Resistor REXT VEXT REXT = 374 – 1.21 – V 1Tested at 25°C. Specifications are assured by design and characterization over the operating temperature range of –40°C to 85°C. 2Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions. Performance may vary for individual units, within the specified maximum and minimum limits. 3Err = (IO(min or max) – IO(av)) / IO(av). IO(av) is the average current of all outputs. IO(min or max) is the output current with the greatest difference from IO(av). 4Recommended operating range: VO = 1.0 to 3.0 V. SDO 15 pF OUTx A6282 RL VL CL A6282 Parameter Measurement Circuits (A) Circuit for tf0, tpd0, and tr0 (B) Circuit for tf1, tpd1, tpd2, and tr1. |
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