Diodes AL58263EV1 User Manual

16-channel led driver with 16-bit apdm control

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General Description
The AL58263 is a 16-channel constant-current LED driver with
16-bit grayscale Adaptive Pulse Density Modulation (APDM) and
supports error diagnostics, power-saving functionality, and
current gain control. This distinctive APDM technology abates the
non-ideal IOUT distortion due to non-symmetric transient
responses and enhances the refresh rate by efficiently separating
the frame waveform.
The device operates over a 3.3V to 5V input voltage range
(±10%), fast 30MHz DCK input, and provides 16 open-drain
constant-current sinking outputs that are rated to 15V and deliver
up to 55mA of high-accuracy current to each LED string. The
current at each output is programmable by an external current-
sensing resistor and can be adjusted by a 6-bit global current
control.
The AL58263 also supports compulsory error detection, where
the display image will not be affected as the intervals and
currents are small. Differing from error mode selections; the
specified diagnostic can be performed. Errors will be stored in the
shift register and can be read out from the DO pin. Moreover, the
threshold voltage for LED short detection can be selected to
comply with different LED string configurations. Sleep mode can
also efficiently lower the supply current in power-saving
applications.
The AL58263 is available in the TSSOP-24EP package and is
specified over the -40°C to +85°C ambient temperature range.
Notes:
1.
No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated's definitions of Halogen- and Antimony-free,
2.
"Green" and Lead-free.
Halogen- and Antimony-free "Green" products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br +
3.
Cl) and <1000ppm antimony compounds.
AL58263EV1 User Guide
Rev. 2
AL58263EV1 User Guide
16-CHANNEL LED DRIVER WITH 16-BIT APDM CONTROL
Applications
Key Features
1 of 13
www.diodes.com
Indoor and outdoor LED video displays
Variable message signs (VMS)
Dot matrix modules
LCD display backlighting
3.3~5V operating supply voltage (±10%)
2~55mA/5V, 2~35mA/3.3V output current range
15V rated output channels for long LED strings
±1.5% (typ.) LED current accuracy between channels
±3% (typ.) LED current accuracy between chips
±0.1% output current regulation capability
16-bit grayscale resolution with Adaptive Pulse Density
Modulation (APDM) control
Non-scramble waveform for high-power LED applications
Grayscale counter reset selection
Grayscale data synchronization selection
6-bit global current control: from 12.5% to 200%
Compulsory error detection includes LED open, LED short
output port leakage, output short-to-GND, output short-to-
power, and REXT short-to-GND
Compulsory error detection with 0.1mA
Short detection threshold voltage selection (2/3/4/4.5V)
Sleep mode to lower the supply current to 10μA (typ.)
Overtemperature warning
30MHz Clock frequency for data transfer
EMI reduction grayscale clock
External GCK watchdog
8KV ESD protection on current output pins
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. "Green" Device (Note 3)
An automotive-compliant part is available under a
separate datasheet (AL58263Q).
© 2024 Copyright Diodes Incorporated. All Rights Reserved
September 2024

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Summary of Contents for Diodes AL58263EV1

  • Page 1 Notes: No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.
  • Page 2 AL58263EV1 User Guide 16-CHANNEL LED DRIVER WITH 16-BIT APDM CONTROL Hardware escription The AL58263EV1 evaluation board is shown in Figure 1 and Figure 2. Figure 1: Top View Figure 2: Bottom View Section Description Mode select button GCK internal/external select switch...
  • Page 3: Power Supply Options

    4), the units digit of the voltage (LED5-8), the first decimal digit of the voltage (LED9-12), and the second decimal digit of the voltage (LED13-16). Figure 3: Low Voltage Warning (VIN=6.9V) Figure 4: Low Voltage Warning (VIN=6.5V) 3 of 13 AL58263EV1 User Guide September 2024 www.diodes.com © 2024 Copyright Diodes Incorporated. All Rights Reserved Rev. 2...
  • Page 4 Scrolling Mode showcases LEDs (D1~D16) gradually brightening and dimming in the “Demo Area” LED section. Figure 5: Scrolling Mode Figure 6: Scrolling Mode 4 of 13 AL58263EV1 User Guide September 2024 www.diodes.com © 2024 Copyright Diodes Incorporated. All Rights Reserved Rev. 2...
  • Page 5 LED lights up in the “LED Diagnosis / Fault Location Indication” LED section. Press and hold SW13 for more than 1 second to return to Scrolling Mode. Figure 8: LED Short-Circuit Detection Mode 5 of 13 AL58263EV1 User Guide September 2024 www.diodes.com © 2024 Copyright Diodes Incorporated. All Rights Reserved Rev. 2...
  • Page 6 Enter Sleep Mode during Scrolling Mode by long-pressing SW11 for over 1 second. All 16 LEDs turn off in the “Demo Area”. Press and hold SW11 for more than 1 second to return to Scrolling Mode. Figure 10: Sleep Mode 6 of 13 AL58263EV1 User Guide September 2024 www.diodes.com © 2024 Copyright Diodes Incorporated. All Rights Reserved Rev. 2...
  • Page 7 Press and hold SW10 for more than 1 second to return to Scrolling Mode. Figure 11: Rext Short Circuit Detection Mode 7 of 13 AL58263EV1 User Guide September 2024 www.diodes.com © 2024 Copyright Diodes Incorporated. All Rights Reserved Rev. 2...
  • Page 8 AL58263EV1 User Guide 16-CHANNEL LED DRIVER WITH 16-BIT APDM CONTROL Evaluation Board Schematic Figure 12: Evaluation Board Schematic AL58263EV1 User Guide 8 of 13 September 2024 www.diodes.com © 2024 Copyright Diodes Incorporated. All Rights Reserved Rev. 2...
  • Page 9 AL58263EV1 User Guide 16-CHANNEL LED DRIVER WITH 16-BIT APDM CONTROL Evaluation Board Layout Figure 13: PCB Top Layer View AL58263EV1 User Guide 9 of 13 September 2024 www.diodes.com © 2024 Copyright Diodes Incorporated. All Rights Reserved Rev. 2...
  • Page 10 AL58263EV1 User Guide 16-CHANNEL LED DRIVER WITH 16-BIT APDM CONTROL Evaluation Board Layout (continued) Figure 14: PCB Bottom Layer View AL58263EV1 User Guide 10 of 13 September 2024 www.diodes.com © 2024 Copyright Diodes Incorporated. All Rights Reserved Rev. 2...
  • Page 11 Button Switch KINGTEK DSHP06TS-S DIP-6 Button Switch, SMD, SW6~SW8 SHOU HAN MST22D18G2 SMD 3.6x9.1 SW_SPST_SKQG SW9~SW14 Button Switch XKB Connection TS-1187A-C-C-B DIP-6 11 of 13 AL58263EV1 User Guide September 2024 www.diodes.com © 2024 Copyright Diodes Incorporated. All Rights Reserved Rev. 2...
  • Page 12: System Performance

    Figure 15: Global Current Control vs Output Current Turn ON/OFF Waveform Figure 16: Turn ON waveform Figure 17: Turn OFF waveform IOUT1 IOUT1 IOUT IOUT2 (400us/div) 12 of 13 AL58263EV1 User Guide September 2024 www.diodes.com © 2024 Copyright Diodes Incorporated. All Rights Reserved Rev. 2...
  • Page 13: Important Notice

    Diodes assumes no liability for any application-related information, support, assistance or feedback that may be provided by Diodes from time to time. Any customer or user of this document or products described herein will assume all risks and liabilities associated with such use, and will hold Diodes and all companies whose products are represented herein or on Diodes’ websites, harmless against all damages and liabilities.

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