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A1389LLHLT-RP9-T

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Allegro MicroSystems, LLC Hall Sensor, SOT-23W. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentsensorsa1389llhlt-rp9-tfactory-2.0.0extractor-text

Verified A1389LLHLT-RP9-T

by Ray · last 31 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier lcsc, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: A1389LLHLT-RP9-T · SOT-23W · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 12-page datasheet
  • ✓distributor: lcsc C3715965, digikey 620-1501-2-ND, mouser 250-A1389LLHLT-RP9-T
  • ✓family: SOT-23
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-5yzapxt2/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ a1389llhlt-rp9-t.kicad_sym✓ a1389llhlt-rp9-t.kicad_mod✓ a1389llhlt-rp9-t.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 3d ago
viewers a1389llhlt-rp9-t: viewers · Ray 3d ago
a1389llhlt-rp9-t-etched.glb Publish 0.1.0 · Ray 3d ago
a1389llhlt-rp9-t-etched.step a1389llhlt-rp9-t: factory component page (tier=lcsc) · Ray 3d ago
a1389llhlt-rp9-t-hero.glb a1389llhlt-rp9-t: hero GLB from the etched model (keeps the MPN mark) · Ray 3d ago
a1389llhlt-rp9-t-hero.overlay.json Publish 0.1.0 · Ray 3d ago
a1389llhlt-rp9-t.glb Publish 0.1.0 · Ray 3d ago
a1389llhlt-rp9-t.kicad_mod Publish 0.1.0 · Ray 3d ago
a1389llhlt-rp9-t.kicad_sym Publish 0.1.0 · Ray 3d ago
a1389llhlt-rp9-t.lbr Publish 0.1.0 · Ray 3d ago
a1389llhlt-rp9-t.step Publish 0.1.0 · Ray 3d ago
package.json Publish 0.1.0 · Ray 3d ago
page.json Set visibility: public · Ray 3d ago
README.md Publish 0.1.0 · Ray 3d ago
verification.json Verified: Published by the parts factory: tier lcsc, 3 pins · Ray 3d ago

A1389LLHLT-RP9-T

Allegro MicroSystems, LLC · Hall Sensor · SOT-23W

A1389LLHLT-RP9-T from Allegro MicroSystems, LLC, in a SOT-23W. 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 VCC power_in Input power supply for 4.5 V to 5.5 V operation (8 V absolute maximum); tie to GND with a bypass capacitor (0.1 µF used in the datasheet).
2 VOUT output Ratiometric analog output signal, clamped between about 0.55 V and 4.5 V typical, with a minimum load of 4.7 kΩ and a maximum load capacitance of 10 nF.
3 GND power_in Ground reference pin.

Key specifications

Parameter Value
Manufacturer Allegro MicroSystems, LLC
Package SOT-23W
Category Sensors
Pins 3

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Forward Supply Voltage VCC 8 V 2
Reverse Supply Voltage VRCC -0.1 V 2
Forward Output Voltage VOUT 7 V 2
Reverse Output Voltage VROUT -0.1 V 2
Output Source Current IOUT(SOURCE) 2 mA VOUT to GND 2
Output Sink Current IOUT(SINK) 10 mA VCC to VOUT 2
Operating Ambient Temperature TA -40 150 °C Range L 2
Maximum Junction Temperature TJ(max) 165 °C 2
Storage Temperature Tstg -65 170 °C 2
Package Thermal Resistance LH, 1-layer RθJA 228 °C/W Package LH, 1-layer PCB with copper limited to solder pads 3
Package Thermal Resistance LH, 2-layer RθJA 110 °C/W Package LH, 2-layer PCB with 0.463 in.2 of copper area each side connected by thermal vias 3
Supply Voltage VCC 4.5 5 5.5 V 4
Undervoltage Threshold (power on) VUVLOHI 3 V Tested at TA = 25°C and TA = 150°C (device powers on) 4
Undervoltage Threshold (power off) VUVLOLO 2.5 V Tested at TA = 25°C and TA = 150°C (device powers off) 4
Supply Current ICC 9 11.5 mA No load on VOUT 4
VCC Ramp Time tVCC 0.005 100 ms TA = 25°C 4
VCC Off Level VCCOFF 0 0.55 V TA = 25°C 4
Supply Zener Clamp Voltage VZ 6 7.3 V TA = 25°C, ICC = 14.5 mA 4
Output Load Resistance RL 4.7 kΩ VOUT to GND 4
Output Load Capacitance CL 10 nF VOUT to GND 4
Output Voltage Clamp High VCLPHIGH 4.35 4.5 4.65 V TA = 25°C, B=+400 G, RL = 10 kΩ (VOUT to GND) 4
Output Voltage Clamp Low VCLPLOW 0.4 0.55 0.7 V TA = 25°C, B = -400 G, RL = 10 kΩ (VOUT to VCC) 4
Sensitivity Sens -9.27 -9 -8.73 mV/G A1389LLHLX-RP9-T, TA = 25°C 4
Quiescent Voltage Output VOUT(Q) 2.488 2.5 2.512 V A1389LLHLX-RP9-T, TA = 25°C 4
Sensitivity Temperature Coefficient TCSens 0.08 0.12 0.16 %/°C Programmed at TA = 150°C, calculated relative to Sens at 25°C 4
Quiescent Voltage Output Drift Across Temperature Range ∆VOUT(Q) -30 0 mV A1389LLHLX-RP9-T, TA = 150°C 5
Power-On Time tPO 50 µs TA = 25°C, CL(PROBE) = 10 pF 4
Delay to Clamp tCLP 30 µs TA = 25°C, CL = 10 nF 4
Internal Bandwidth BWi 20 kHz Small signal -3 dB 4
Chopping Frequency fC 400 kHz TA = 25°C 4
Output-Referred Noise VN 15 mV(p-p) VCC = 5 V, TA = 25°C, CBYPASS = open, Sens = 9 mV/G, no load on VOUT 4
Input-Referred RMS Noise Density VNRMS 1.5 mG/√Hz VCC = 5 V, TA = 25°C, CBYPASS = open, Sens = 9 mV/G, no load on VOUT, fmeasured << BWi 4
DC Output Resistance ROUT 1 Ω <1 4
Linearity Sensitivity Error LinERR 1.5 % ±1.5 5
Symmetry Sensitivity Error SymERR 1.5 % ±1.5 5
Ratiometry Quiescent Voltage Output Error RatVOUT(Q) 1.5 % ±1.5; Across supply voltage range (relative to VCC = 5 V) 5
Ratiometry Sensitivity Error RatSens 1.5 % ±1.5; Across supply voltage range (relative to VCC = 5 V) 5
Ratiometry Clamp Error RatVOUTCLP 1.5 % ±1.5; TA = 25°C, across supply voltage range (relative to VCC = 5 V) 5
Sensitivity Drift Due to Package Hysteresis ∆SensPKG 2 % ±2; TA = 25°C, after temperature cycling 5

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
contacts tin lead (Pb) free, with 100% matte-tin leadframe plating. Linear Hall-Effect Sensor ICs with Analog Output 2

CAD (KiCad official)

  • Symbol: A1389LLHLT-RP9-T
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23W (KiCad packages3D, STEP)
  • 3D model files: a1389llhlt-rp9-t-etched.step / a1389llhlt-rp9-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); a1389llhlt-rp9-t.step / a1389llhlt-rp9-t.glb are the bare package body.

Provenance

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

  • Datasheet: Allegro MicroSystems, LLC datasheet (12 pp, sha256 ab25c54a14775b00, retrieved 2026-10-31, tier: lcsc)
  • 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