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AL1791AFE-13

Public Made by Adom

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Diodes Incorporated LED Drivers, UDFN-14-EP(4x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentdisplay modules - led drivers - display driversal1791afe-13factory-2.0.0extractor-text

Verified AL1791AFE-13

by Ray · last 12 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

12 Nov 2026RayPublished by the parts factory: tier mfr, 15 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: AL1791AFE-13 · UDFN-14-EP(4x3) · 15 pins
  • ✓copper: 15 copper pads, none touching another net
  • ✓datasheet: all 15 pin names found in the 18-page datasheet
  • ✓distributor: lcsc C156300, digikey AL1791AFE-13DITR-ND, mouser 621-AL1791AFE-13
  • ✓family: DFN-14-1EP_3x4mm_P0.5mm_EP1.7x3.3mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-cvkthy90/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height within the datasheet's package drawing (datasheet p.16)
  • ✓pads: 15 pins = 15 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 15 pins agree
  • ✓symbol_text: no pin names collide
  • ✓viewers: viewers/footprint.html 26 kB, viewers/symbol.html 14 kB
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ al1791afe-13.kicad_sym✓ al1791afe-13.kicad_mod✓ al1791afe-13.step
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray
viewers al1791afe-13: viewers rendered from the public page · Ray
al1791afe-13-etched.glb al1791afe-13: factory component page (tier=mfr) · Ray
al1791afe-13-etched.step al1791afe-13: factory component page (tier=mfr) · Ray
al1791afe-13-hero.glb al1791afe-13: hero GLB from the etched model (keeps the MPN mark) · Ray
al1791afe-13-hero.overlay.json al1791afe-13: hero GLB from the etched model (keeps the MPN mark) · Ray
al1791afe-13.glb Publish 0.1.0 · Ray
al1791afe-13.kicad_mod Publish 0.1.0 · Ray
al1791afe-13.kicad_sym Publish 0.1.0 · Ray
al1791afe-13.lbr Publish 0.1.0 · Ray
al1791afe-13.step Publish 0.1.0 · Ray
package.json Publish 0.1.0 · Ray
page.json Set visibility: public · Ray
README.md Publish 0.1.0 · Ray
verification.json Verified: Published by the parts factory: tier mfr, 15 pins · Ray

AL1791AFE-13

Diodes Incorporated · LED Drivers · UDFN-14-EP(4x3)

AL1791AFE-13 from Diodes Incorporated, in a UDFN-14-EP(4x3). 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 EN input Active-high enable input, internally pulled down; enabled above approximately 2.5V and disabled below 0.4V.
2 PWM4/GND input PWM signal input for channel 4 (internally pulled down) on AL1794; GND for AL1791, AL1792 and AL1793.
3 PWM3/GND input PWM signal input for channel 3 (internally pulled down) on AL1793 and AL1794; GND for AL1791 and AL1792.
4 PWM2/GND input PWM signal input for channel 2 (internally pulled down) on AL1792, AL1793 and AL1794; GND for AL1791.
5 PWM1 input PWM signal input for channel 1, internally pulled down; tie to GND when this channel is not used.
6 LED1 passive Channel 1 LED cathode (current sink input).
7 LED2/GND passive Channel 2 LED cathode for AL1792, AL1793 and AL1794; GND for AL1791.
8 GND power_in Ground.
9 LED3/GND passive Channel 3 LED cathode for AL1793 and AL1794; GND for AL1791 and AL1792.
10 LED4/GND passive Channel 4 LED cathode for AL1794; GND for AL1791, AL1792 and AL1793.
11 LEDPG output LED power good indication, open-drain, asserted low to report insufficient headroom; needs an external pull-up resistor.
12 FAULTB output Open-drain fault report, asserted low on faulty conditions; needs an external pull-up resistor.
13 REF passive Reference current setting through external resistor RSET (reference voltage 1.5V typ).
14 VIN power_in Voltage input, 6.5V to 30V recommended operating range.
15 Exposed PAD power_in Exposed pad internally connected to GND; connect externally to GND and thermal mass for thermal impedance, not as an electrical conduction path.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package UDFN-14-EP(4x3)
Category Display Modules / LED Drivers / Display Drivers
Pins 15

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
ESD HBM HBM 4000 V Human Body Model ESD Protection 7
ESD CDM CDM 1000 V Charged Device Model ESD Protection 7
Input Voltage VIN 30 V TA=+25°C 7
Enable Voltage, PWM Voltage VEN, VPWMx 7 V TA=+25°C 7
Maximum Junction Temperature TJ(MAX) 160 °C 7
Storage Temperature Range TST -65 150 °C 7
Input voltage at VIN VIN 6.5 30 V 7
Operating Ambient Temperature TA -40 125 °C 7
High-Level Input Voltage on EN and PWMx VIH 2.5 5.5 V 7
Low-Level Input Voltage on EN and PWMx VIL 0 0.4 V 7
EN Low Voltage VIL(EN) 0 0.4 V 8
EN High Voltage VIH(EN) 2.5 V 8
EN Internal Pulldown I(EN-PD) 0.35 3.5 μA VEN=5V 8
Digital PWM Low Voltage VIL(PWMx) 0.3 V 8
Digital PWM High Voltage VIH(PWMx) 2.5 V 8
Digital PWM Frequency FPWMx 0.5 4 KHz 8
PWM Internal Pulldown I(PWMx-PD) 0.35 3.5 μA VEN=5V 8
Reference Voltage VREF 1.47 1.5 1.53 V 8
LEDx Leakage Current ILED_LEAK 0.1 2 μA VPWMx=0V, VLEDx=+12V 8
LED Current Accuracy ILED_ACCURACY -4 4 % RSET=12KΩ 8
FAULTB Output Low Voltage VFOL 180 mV IFAULTB=1mA 8
FAULTB Leakage Current IFOH 1 μA VFAULTB=6V 8
UVLO Voltage VUVLO 6.3 V VIN Rising 8
UVLO Hysteresis VUVHYS 300 mV VIN Falling 8
Shutdown Supply Current ISHDN 10 µA Disabled 8
Quiescent Supply Current IQ 2 mA Enabled, LEDx floating, PWMx are “L”, RSET is 12KΩ 8
Reference Current IREF 0.125 mA RSET=12KΩ 8
Regulation Current for Channel 1 ILED1_NOM 250 mA RSET=12KΩ 8
Minimum LED Regulation Voltage VLED_REG 250 mV ILED1=250mA 8
LED Short Protection Threshold VLEDSHP 6 V 8
Soft-start Time TSS 100 μS VEN=5V, 90% of ILEDx_NOM 8
Thermal Shutdown Threshold TSHDN 160 °C RSET=12KΩ 8
Thermal Recovery Threshold TREC 100 °C RSET=12KΩ 8
Thermal Resistance Junction-to-Ambient θJA 55 °C/W U-DFN4030-14 (Note 5) 8
Thermal Resistance Junction-to-Case θJC 12 °C/W U-DFN4030-14 (Note 5) 8

CAD (KiCad official)

  • Symbol: AL1791AFE-13
  • Footprint: Package_DFN_QFN:DFN-14-1EP_3x4mm_P0.5mm_EP1.7x3.3mm
  • 3D model: UDFN-14-EP(4x3), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.6 mm tall, datasheet A, nominal). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
  • 3D model files: al1791afe-13-etched.step / al1791afe-13-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); al1791afe-13.step / al1791afe-13.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (18 pp, sha256 b00e0b817e901edf, retrieved 2026-11-12, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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