Maker : Allegro MicroSystems
Part No. : A6282

  Datasheet PDF : A6282.pdf
  Cross Reference : A6282 Cross Reference
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Shortcut : A6280  A6281  A6282  A6283  A6285 

Product Information

A6282 16-Channel Constant-Current LED Driver Features and Benefits ▪ 16 constant-current outputs, up to 50 mA each ▪ LED output voltage up to 12 V ▪ 3.0 to 5.5 V logic supply range ▪ Schmitt trigger inputs for improved noise immunity ▪ Power-On Reset (POR), all register bits = 0 www.DataSheet4U.com ▪ Low-power CMOS logic and latches ▪ High data input rate: 30 MHz ▪ Output current accuracy: between channels < ±3% and between ICs ±7%, over the full operating temperature range ▪ Internal UVLO and thermal shutdown (TSD) circuitry Packages: 24-contact QFN 4 mm × 4 mm × 0.75 mm (Package ES) 24-pin TSSOP with exposed thermal pad (Package LP) 24-pin SOIC (Package LW) Description The A6282 device is designed for LED display applications. This CMOS device includes an input shift register, accompanying data latches, and 16 MOS constant current sink drivers. The CMOS shift registers and latches allow direct interfacing with microprocessor-based systems. With a 3.3 or 5 V logic supply, typical serial data input rates can reach up to 30 MHz. The LED drive current level can be set by a single external resistor, selected by the application designer. A serial data output permits cascading of multiple devices in applications requiring additional drive lines. The A6282 is available in a variety of 24-terminal packages: QFN (package ES) and eTSSOP (LP), which have an exposed thermal pad, and SOIC (LW). All packages are lead (Pb) free with 100% matte tin leadframe plating. Applications include the following: ▪ Monocolor, multicolor, or full-color LED display ▪ Monocolor, multicolor, or full-color LED signboard ▪ Display backlighting ▪ Multicolor LED lighting Not to scale Typical Application VLED 10 μF OUT0 OUT15 OUT0 OUT15 10 μF SDI Controller CLK LE OE SDI CLK LE OE SDO VDD VDD 100 nF GND REXT SDI CLK LE OE SDO VDD VDD 100 nF GND REXT A6282 A6282 IC 1 IC 2 Cascaded A6282 devices 6282-DS, Rev. 1 A6282 Selection Guide Part Number A6282EES-T A6282EESTR-T A6282ELP-T A6282ELPTR-T A6282ELW-T A6282ELWTR-T www.DataSheet4U.com Package 16-Channel Constant-Current LED Driver Packing 92 pieces per tube 1500 pieces per 7-in. reel 62 pieces per tube 4000 pieces per 13 in. reel 31 pieces per tube 1000 pieces per 13-in. reel 4 mm × 4 mm QFN, 24 pins, exposed thermal pad TSSOP, 24 pins, exposed thermal pad SOICW, 24 pins Absolute Maximum Ratings Characteristic Supply Voltage* OUTx Current (any single output) Input Voltage Range* LED Load Supply Range* ESD Rating Operating Temperature Range (E) Junction Temperature Storage Temperature Range *With respect to ground. TA TJ(max) Tstg Symbol VDD IO VI VLED HBM (JEDEC JESD22-A114, Human Body Model) CDM (JEDEC JESD22-C101, Charged Device Model) VOE, VLE, VCLK, VSDI Notes Rating –0.3 to 5.5 60 –0.3 to VDD + 0.3 –0.3 to 13.2 2.0 1.0 –40 to 85 150 –55 to 150 Unit V mA V V kV kV °C °C °C Thermal Characteristics Characteristic Package Thermal Resistance Symbol RθJA Test Conditions1 ES package, 4-layer PCB based on JEDEC standard LP packge, 4-layer PCB based on JEDEC standard LW packge, 4-layer PCB based on JEDEC standard Value 37 28 44 Units °C/W °C/W °C/W *Additional thermal information available on the Allegro website. 5.0 Allowable Package Power Dissipation (W) 4.0 Pa ck ag 3.0 Pa ck e LP ,R ag eE JA = S, 28 2.0 Pa R °C ck ag JA /W W eL W, R =3 7° C/ C/ JA = 1.0 44 ° W 0 25 50 75 100 125 Ambient Temperature (°C) 150 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 2 A6282 16-Channel Constant-Current LED Driver Functional Block Diagram VDD www.DataSheet4U.com SDI CLK OE LE UVLO and TSD Serial - Parallel Shift Register SDO Control Logic Block Latches Output Control Drivers REXT IO Regulator Exposed Pad (ET and LP packages) OUT15 GND OUT0 OUT1 VLED Inputs and Outputs Equivalent Circuits Resistor values are equivalent resistance and...

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