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AL8853S-13

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Diodes Incorporated LED Drivers, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AL8853S-13

Diodes Incorporated · LED Drivers · SO-8

AL8853S-13 from Diodes Incorporated, in a SO-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VIN power_in Power supply input for the controller, specified from 6V to 40V with absolute maximum of -0.3V to 43V and UVLO turn-on at 5.3V typical.
2 GATE output Gate drive output for the external boost power MOSFET, with a typical output voltage of 13V at VIN = 24V and absolute maximum of -0.3V to 43V.
3 GND power_in Ground reference for the controller and the external feedback and OVP dividers, which should be grounded close to the IC ground.
4 CS input Current sense input for peak current mode control and OCP, with absolute maximum of -0.3V to 7V and a latch-off if CS exceeds 1.2V typical for 17 consecutive cycles.
5 FB input LED current feedback input compared against the internal 200mV reference (±3%), with absolute maximum of -0.3V to 7V.
6 COMP passive Boost converter loop compensation node, where GATE latches off if COMP stays above 3.2V typical for 37ms, with absolute maximum of -0.3V to 7V.
7 OVP input Over voltage protection sense input that shuts the output down above 2.0V typical and triggers VOUT short protection below 0.2V typical, with absolute maximum of -0.3V to 43V.
8 PWM input PWM signal input for analog dimming and enable, operating from 5kHz to 50kHz with logic high above 2.5V and logic low below 1.2V, with absolute maximum of -0.3V to 7V.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SO-8
Category LED Drivers
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input Voltage VIN 6 40 V 4
Operating Supply Current IOP 2 3 mA VIN = 12V, VPWM = 5V, No Load 4
Shutdown Supply Current ISHDN 130 180 µA PWM Low > 50ms, Sleep Mode 4
Input UVLO Threshold VUVLO 4.9 5.3 5.7 V VIN Rising 4
Output Over Voltage Threshold Voltage VOVP_OV 1.9 2 2.1 V 4
Over Current Threshold Voltage VCS_OCP 255 300 345 mV Duty = 90% 4
CS High Protection Threshold VCS_HIGH 1.1 1.2 1.3 V Diode or Inductor Short 4
COMP High Protection Threshold VCOMP_HIGH 2.9 3.2 3.5 V FB Pin Short to GND 4
Oscillator Frequency fOSC 110 120 130 kHz 4
Maximum Duty Cycle DMAX 93 95 97 % 4
Feedback Reference Voltage VFB 194 200 206 mV Reference Voltage at Non-Inverting Input 4
PWM Duty 0 100 % 4
PWM Logic Input for Analog Dimming VPWM_H 2.5 V 4
PWM Logic Input for Analog Dimming VPWM_L 1.2 V 4
Recommended Input Voltage (VIN pin) VIN 6 40 V 3
PWM Frequency for Analog Dimming fPWM 5 50 kHz 3
Ambient Temperature TA -40 125 °C 3
VIN, VGATE, VOVP Pin Voltage VIN, VGATE, VOVP -0.3 43 V 3
CS, FB, COMP, PWM Pin Voltage VCS, VFB, VCOMP, VPWM -0.3 7 V 3
Operating Junction Temperature TJ 150 °C 3
Storage Temperature Range TSTG -65 150 °C 3
Lead Temperature (Soldering) TLEAD 260 °C Soldering, 10s 3
Thermal Resistance (Junction to Ambient) θJA 105 °C/W Note 5: 1in x 1in FR-4, 2oz copper, minimum recommended pad layout 3
Thermal Resistance (Junction to Case) θJC 6.6 °C/W Note 5: 1in x 1in FR-4, 2oz copper, minimum recommended pad layout 3
ESD (Charge Device Model) 750 V Charge Device Model 3
ESD (Human Body Model) 2000 V Human Body Model 3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing Abs , ESD (Human Body Model) 2000 V Notes: 4. Stresses greater than those listed under Absolute Maximum Ratings can cause permanent damage to the device. These are stress ratings only, and 3
contacts Copper 5. For the compensation capacitor, it should be placed as close as possible to the COMP pin. 6. Copper area of the power loop, especially around the switching node, should be as big as possible for go 12

CAD (KiCad official)

  • Symbol: AL8853S-13
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SO-8 (KiCad packages3D, STEP)
  • 3D model files: al8853s-13-etched.step / al8853s-13-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); al8853s-13.step / al8853s-13.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Diodes Incorporated datasheet (15 pp, sha256 89f7fbedb2a21848, retrieved 2026-10-17, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF