A6282EESTR-T Allegro Microsystems Inc, A6282EESTR-T Datasheet
A6282EESTR-T
Specifications of A6282EESTR-T
Related parts for A6282EESTR-T
A6282EESTR-T Summary of contents
Page 1
Features and Benefits ▪ 16 constant-current outputs each ▪ LED output voltage ▪ 3.0 to 5.5 V logic supply range ▪ Schmitt trigger inputs for improved noise immunity ▪ Power-On Reset (POR), ...
Page 2
... A6282 Selection Guide Part Number A6282EESTR × QFN, 24 pins, exposed thermal pad A6282ELPTR-T TSSOP, 24 pins, exposed thermal pad Absolute Maximum Ratings Characteristic Symbol Supply Voltage* V OUTx Current (any single output) I Input Voltage Range* V LED Load Supply Range* V ESD Rating Operating Temperature Range (E) ...
Page 3
A6282 VDD UVLO and TSD SDI CLK OE Control Logic Block LE REXT I O Regulator Exposed Pad (ET and LP packages) CLK, SDI, LE, O ¯ ¯ E ¯ 16-Channel Constant-Current LED Driver Functional Block Diagram Serial - Parallel ...
Page 4
A6282 SDO 1 REXT 2 VDD 3 GND 4 SDI 5 CLK 6 ES Package Terminal List Table Number Name ES LP CLK 6 3 Clock; data shift clock input terminal GND 4 1 Logic supply ground and load supply ...
Page 5
A6282 ELECTRICAL CHARACTERISTICS Characteristic Logic Supply Voltage Range LED Load Supply Output Voltage Undervoltage Lockout Output Current Output Current Shift Output to Output Matching Error 3 Output Current Regulation Output Leakage Current Logic Input Voltage Logic Input Voltage Hysteresis Logic ...
Page 6
A6282 ELECTRICAL CHARACTERISTICS (continued), Characteristic Thermal Shutdown Temperature Thermal Shutdown Hysteresis Reference Voltage at External Resistor REXT 1 Tested at 25°C. Specifications are assured by design and characterization over the operating temperature range of –40°C to 85°C. 2 Typical data ...
Page 7
A6282 Normal Operation t wh0 CLK t t su0 h0 SDI SDO t su1 LE OE OUTx (current) Disabling Outputs OE OUTx (current) 16-Channel Constant-Current LED Driver Timing Diagrams t pd0 90% 50% 10% t wh1 ...
Page 8
A6282 Channel Maximum Constant Output Current versus External Reference Resistance 0.3 1.0 R (kΩ) EXT Input-Output Truth Table Serial Shift Register Contents Data Clock Input Input … ...
Page 9
A6282 Normal Operation Serial data present at the SDI (Serial Data In) input is transferred to the shift register on the transition from logic 0 to logic 1 of the CLK (Clock) input pulse. On succeeding CLK pulses, the register ...
Page 10
A6282 Load Supply Voltage (V ) LED This device is designed to operate with driver voltage drops (V of 1.0 to 3.0V. If higher voltages are dropped across the driver, package power dissipation will increase. To minimize package power dissipation, ...
Page 11
A6282 Package ES mm, 24-pin QFN with Exposed Thermal Pad 4.00 ±0. 25X 0.08 C +0.05 0.25 –0.07 0.50 +0.15 0.40 –0. 2.10 16-Channel Constant-Current LED Driver 4.00 ...
Page 12
A6282 Package LP, 24-pin TSSOP with Exposed Thermal Pad 7.80 ±0. 4.32 24X 0.10 C +0.05 0.25 0.65 –0.06 16-Channel Constant-Current LED Driver 4° ±4 +0.05 0.15 –0.06 3.00 4.40 ±0.10 6.40 ±0.20 0.60 ±0.15 ...
Page 13
A6282 Copyright ©2008-2010, Allegro MicroSystems, Inc. The products described here are manufactured under one or more U.S. patents or U.S. patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such de par tures from the ...