# ACS37612LLUALU-010B3

**Allegro MicroSystems, LLC** · Current Sensors · TSSOP-8

ACS37612LLUALU-010B3 from Allegro MicroSystems, LLC, in a TSSOP-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 | VOUT | output | Analog output signal that varies linearly with the bidirectional AC or DC field sensed, also used for programming. |
| 2 | GND | power_in | Ground pin. |
| 3 | NC | unconnected | Not connect; tie to GND for optimal ESD performance. |
| 4 | VCC | power_in | Input power supply, also used for programming. |
| 5 | NC | unconnected | Not connect; tie to GND for optimal ESD performance. |
| 6 | NC | unconnected | Not connect; tie to GND for optimal ESD performance. |
| 7 | NC | unconnected | Not connect; tie to GND for optimal ESD performance. |
| 8 | NC | unconnected | Not connect; tie to GND for optimal ESD performance. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Allegro MicroSystems, LLC |
| Package | TSSOP-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 (3.3 V nominal supply voltage variant) | VCC | 3 | 3.3 | 3.6 | V | 3.3 V nominal supply voltage variant | 6 |
| Supply Current | ICC |  | 12 | 16 | mA | VCC(min) ≤ VCC ≤ VCC(max), where VCC = 5 V or 3.3 V, no load on output | 6 |
| Output Load Resistance | RL | 4.7 |  |  | kΩ | VOUT to GND | 6 |
| Output Load Capacitance | CL |  | 1 | 10 | nF | VOUT to GND | 6 |
| Output Saturation Voltage (Clamp Disabled Option, Default Only) | VSAT(LOW) |  |  | 200 | mV | TA = 25°C, RL(PULLUP) = 10 kΩ to VCC | 6 |
| Nonlinearity | ELIN | -1 | 0.45 | 1 | % | Up to full-scale output | 7 |
| Differential Magnetic Range | BDIFF | -135 |  | 135 | G |  | 8 |
| Sensitivity Error | ESENS | -2 | 1 | 2 | % | TA = 25°C | 8 |
| Sensitivity Drift Over Temperature | ΔSensTC | -2 | 1 | 2 | % | TA = 25°C to 150°C | 8 |
| Factory Quiescent Voltage Output Error | VOE | -5 | 3 | 5 | mV | TA = 25°C | 8 |
| Quiescent Voltage Output Temperature Error | VOUT(Q)TC | -10 | 3 | 10 | mV | TA = 25°C to 150°C | 8 |
| QVO Ratiometry Error | VRatERRQVO | -15 | 5 | 15 | mV | VCC = ±3% variation of nominal supply voltage | 8 |
| Sens Ratiometry Error | RatERRSens | -1.25 | 0.5 | 1.25 | % | VCC = ±3% variation of nominal supply voltage | 8 |
| Supply Voltage | VCC |  |  | 6.5 | V |  | 3 |
| Reverse Supply Voltage | VRCC | -0.5 |  |  | V |  | 3 |
| Output Voltage | VOUT |  |  | 6.5 | V |  | 3 |
| Reverse Output Voltage | VROUT | -0.5 |  |  | V |  | 3 |
| Output Source Current | IOUT(Source) |  |  | 3 | mA | VOUT to GND | 3 |
| Output Sink Current | IOUT(Sink) |  |  | 10 | mA | Minimum pull-up resistor of 500 Ω | 3 |
| Nominal Operating Ambient Temperature Range L | TA | -40 |  | 150 | °C | Range L | 3 |
| Maximum Junction Temperature | TJ(max) |  |  | 165 | °C |  | 3 |
| Storage Temperature | Tstg | -65 |  | 165 | °C |  | 3 |
| Human Body Model ESD | VHBM | -12 |  | 12 | kV | Per AEC-Q100 | 3 |
| Charged Device Model ESD | VCDM | -1 |  | 1 | kV | Per AEC-Q100 | 3 |
| Package Thermal Resistance | RθJA |  | 145 |  | °C/W | LU package, on 4-layer PCB based on JEDEC standard | 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 |
|---|---|---|---|---|
| contacts |  | tin | (thin-shrink small outline package, suffix LU) that is lead (Pb) free, with 100% matte tin leadframe plating. | 1 |

## CAD (KiCad official)

- Symbol: `ACS37612LLUALU-010B3`
- Footprint: `Package_SO:TSSOP-8_4.4x3mm_P0.65mm`
- 3D model: TSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `acs37612llualu-010b3-etched.step` / `acs37612llualu-010b3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `acs37612llualu-010b3.step` / `acs37612llualu-010b3.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Allegro MicroSystems, LLC datasheet](docs/acs37612llualu-010b3-datasheet.pdf) (23 pp, sha256 `59fb5c49aeef6407`, retrieved 2026-11-06, 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](docs/acs37612llualu-010b3-datasheet.pdf)