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ACS70331EOLCTR-2P5U3
Public Made by Adomby adom
ALLEGRO Current Sensors, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownACS70331EOLCTR-2P5U3
ALLEGRO · Current Sensors · SOIC-8
ACS70331EOLCTR-2P5U3 from ALLEGRO, in a SOIC-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 | IP+ | passive | Terminals for current being sensed; fused internally. |
| 2 | IP+ | passive | Terminals for current being sensed; fused internally. |
| 3 | IP- | passive | Terminals for current being sensed; fused internally. |
| 4 | IP- | passive | Terminals for current being sensed; fused internally. |
| 5 | GND | power_in | Device ground terminal. |
| 6 | NC | unconnected | This pin should be left unconnected during normal operation. |
| 7 | VIOUT | output | Analog output representing the current flowing through IP. |
| 8 | VCC | power_in | Device power supply terminal. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ALLEGRO |
| Package | SOIC-8 |
| Category | Sensors |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 3 | 3.3 | 4.5 | V | 6 | |
| Supply Current | ICC | 4.5 | 6 | mA | VCC(min) ≤ VCC ≤ VCC(max), no load on VIOUT, fuses powered down | 6 | |
| Supply Current at Start-Up | ICC_START_UP | 7.5 | mA | VCC(min) ≤ VCC ≤ VCC(max), no load on VIOUT, fuses powered (from time when VCC rises above VCC(min) to tFPD) | 6 | ||
| Output Resistive Load | RL | 22 | kΩ | VIOUT to GND or VIOUT to VCC | 6 | ||
| Output Capacitive Load (stable, slew rate and bandwidth reduced) | CL | 100 | pF | VIOUT to GND, output is stable, slew rate and bandwidth are reduced | 6 | ||
| Output Capacitive Load (maintains BW) | CL | 50 | pF | VIOUT to GND, maintains BW | 6 | ||
| Saturation Voltage High | VSAT_HIGH | 2.8 | V | VCC(min) < VCC < VCC(max); RL = 22 kΩ to GND | 6 | ||
| Saturation Voltage Low | VSAT_LOW | 20 | 200 | mV | VCC(min) < VCC < VCC(max); RL = 22 kΩ to VIOUT | 6 | |
| Hysteresis after ±10 A pulse | IH | 10 | 20 | mA | TA = 25°C; change in the output at zero current after a ±10 A pulse of current through the sensor | 6 | |
| Total Output Error at IPR(max), 25°C | ETOT | -0.8 | 0.8 | 0.8 | % | Measured at IP = IPR(max), TA = 25°C | 10 |
| Total Output Error at IPR(max), 25°C to 85°C | ETOT | -3 | 3 | 3 | % | Measured at IP = IPR(max), TA = 25°C to 85°C | 10 |
| Total Output Error at IPR(max), -40°C to 25°C | ETOT | -5 | 5 | 5 | % | Measured at IP = IPR(max), TA = -40°C to 25°C | 10 |
| Sensitivity Error at IPR(max), 25°C | Esens | -0.5 | 0.5 | 0.5 | % | Measured at IP = IPR(max), TA = 25°C | 10 |
| Sensitivity Error at IPR(max), 25°C to 85°C | Esens | -2.5 | 2.5 | 2.5 | % | Measured at IP = IPR(max), TA = 25°C to 85°C | 10 |
| Sensitivity Error at IPR(max), -40°C to 25°C | Esens | -2 | 2 | 2 | % | Measured at IP = IPR(max), TA = -40°C to 25°C | 10 |
| Offset Voltage at IP = 0 A, 25°C | VOE | -11 | 11 | 11 | mV | IP = 0 A, TA = 25°C | 10 |
| Offset Voltage at IP = 0 A, 25°C to 85°C | VOE | -17 | 17 | 17 | mV | IP = 0 A, TA = 25°C to 85°C | 10 |
| Offset Voltage at IP = 0 A, -40°C to 25°C | VOE | -34 | 34 | 34 | mV | IP = 0 A, TA = -40°C to 25°C | 10 |
| Sensitivity | Sens | 800 | mV/A | IPR(min) < IP < IPR(max) | 10 | ||
| Zero Current Output Voltage | VIOUT(Q) | 0.25 | V | IP = 0 mA, TA = 25°C | 10 | ||
| Current Sensing Range | IPR | 0 | 2.5 | A | 10 | ||
| Supply Voltage | VCC | 7 | V | 3 | |||
| Reverse Supply Voltage | VRCC | -0.1 | V | 3 | |||
| Output Voltage | VIOUT | 6 | V | 3 | |||
| Reverse Output Voltage | VRIOUT | -0.1 | V | 3 | |||
| Working Voltage | VWORKING | 100 | V | Voltage applied between pins 1 to 4 and pins 5 to 8 (SOIC) | 3 | ||
| Maximum Continuous Current | IP(max) | -10 | 10 | A | 3 | ||
| Maximum Continuous External Field | B | -50 | 50 | G | 3 | ||
| Nominal Operating Ambient Temperature | TA | -40 | 85 | °C | Range E | 3 | |
| Maximum Junction Temperature | TJ(max) | 100 | °C | 3 | |||
| Storage Temperature | Tstg | -65 | 125 | °C | 3 |
CAD (KiCad official)
- Symbol:
ACS70331EOLCTR-2P5U3 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
acs70331eolctr-2p5u3-etched.step/acs70331eolctr-2p5u3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);acs70331eolctr-2p5u3.step/acs70331eolctr-2p5u3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ALLEGRO datasheet (27 pp, sha256
b6acd30f73a9827b, retrieved 2026-11-02, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).