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ACS720KLATR-35AB-T

Allegro MicroSystems LLC · Current Sensors · SOIC-16-300mil

ACS720KLATR-35AB-T from Allegro MicroSystems LLC, in a SOIC-16-300mil. 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 Terminal for the current being sensed, fused internally; pins 1 through 4 are tied together internally as IP+.
2 IP+ passive Terminal for the current being sensed, fused internally; pins 1 through 4 are tied together internally as IP+.
3 IP+ passive Terminal for the current being sensed, fused internally; pins 1 through 4 are tied together internally as IP+.
4 IP+ passive Terminal for the current being sensed, fused internally; pins 1 through 4 are tied together internally as IP+.
5 IP- passive Terminal for the current being sensed, fused internally; pins 5 through 8 are tied together internally as IP-.
6 IP- passive Terminal for the current being sensed, fused internally; pins 5 through 8 are tied together internally as IP-.
7 IP- passive Terminal for the current being sensed, fused internally; pins 5 through 8 are tied together internally as IP-.
8 IP- passive Terminal for the current being sensed, fused internally; pins 5 through 8 are tied together internally as IP-.
9 GND power_in Signal ground terminal for the device.
10 FAULT_S output Open-drain slow fault output, low true; intended to be pulled up to a compatible MCU voltage by the user.
11 FILTER passive Add a capacitor to set the output filter pole location (internal filter resistance RF(INT) is 1.7 kΩ typical).
12 VIOUT output Analog output signal, 0 to 3 V swing on a 5 V supply with 1.5 V at zero current; output capacitance load CL is limited to 10 nF maximum to GND.
13 FAULT_F output Open-drain fast fault output, low true; intended to be pulled up to a compatible MCU voltage by the user.
14 VCC power_in Device power supply terminal; operating range 4.5 V to 5.5 V (5.0 V typical), with 6 V absolute maximum.
15 VOC_F input Sets the trip current level for the fast fault via a user-created resistor divider from VCC.
16 VOC_S input Sets the trip current level for the slow fault via a user-created resistor divider from VCC.

Key specifications

Parameter Value
Manufacturer Allegro MicroSystems LLC
Package SOIC-16-300mil
Category Magnetic Sensors
Pins 16

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 4.5 5 5.5 V 5
Supply Current ICC 13 16 mA VCC = 5.0 V, output open 5
Output Capacitance Load CL 10 nF VIOUT to GND 5
Output Resistive Load RL 10 kΩ VIOUT to GND, VIOUT to VCC 5
Saturation Voltage VOL 150 mV RL = 10 kΩ (VIOUT to VCC) 5
Clamp Voltage VCLAMP 3 3.25 3.5 V 5
Fault Output Low Voltage VFAULTL 0.4 V RPU = 10 kΩ, under fault condition, FAULT_S and FAULT_F pins 6
Fault Pull-Up Resistance RPU 4.7 500 kΩ 6
Supply Voltage (absolute maximum) VCC 6 V 3
Reverse Supply Voltage VRCC -0.5 V 3
Filter Voltage VFILTER 25 V 3
Reverse Filter Voltage VRFILTER -0.5 V 3
Reverse Output Voltage VRIOUT, VRFAULT_S, VRFAULT_F -0.5 V 3
Reverse Input Pin Voltages VROC_S, VROC_F -0.5 V 3
Maximum Continuous Current ICMAX 55 A TA = 25°C 3
Operating Ambient Temperature TA -40 125 °C Range K 3
Junction Temperature TJ(max) 165 °C 3
Storage Temperature Tstg -65 170 °C 3
Optimized Accuracy Range IPR -35 35 A x35AB variant 9
Sensitivity Error ESENS -1.5 0.6 1.5 % IP = IPR(max), TA = 25°C to 125°C 9
Sensitivity Error ESENS -4 1.5 4 % IP = IPR(max), TA = -40°C to 25°C 9
Offset Voltage VOE -10 3.5 10 mV IP = 0 A, TA = 25°C to 125°C 9
Offset Voltage VOE -30 9 30 mV IP = 0 A, TA = -40°C to 25°C 9
Fast Fault Error (positive IP) EFF(HIGH)+ -10 5 10 % VOC_F = 0.7 × VCC, Positive IP, TA = 25°C 9
Fast Fault Error (negative IP) EFF(HIGH)- -10 5 10 % VOC_F = 0.7 × VCC, Negative IP, TA = 25°C 9
Fast Fault Error (negative IP) EFF(HIGH)- -15 10 15 % VOC_F = 0.7 × VCC, Negative IP, TA = 25°C to 125°C 9
Fast Fault Error (positive IP, low trip) EFF(LOW)+ -20 12 20 % VOC_F = 0.38 × VCC, Positive IP, TA = 25°C 9
Fast Fault Error (negative IP, low trip) EFF(LOW)- -20 12 20 % VOC_F = 0.38 × VCC, Negative IP, TA = 25°C 9
Fast Fault Error (negative IP, low trip) EFF(LOW)- -30 18 30 % VOC_F = 0.38 × VCC, Negative IP, TA = 25°C to 125°C 9
Slow Fault Error (high trip) ESF(HIGH) -6 3 6 % VOC_S = 0.7 × VCC, IP rising 9
Slow Fault Error (low trip) ESF(LOW) -10 5 10 % VOC_S = 0.3 × VCC, IP rising 9
Fast Fault Response Time tR(FF) 1.5 2 μs Current step 0 to 1.2 × IFAULT(FAST); RPU = 10 kΩ, 100 pF from FAULT_F to ground 9
Junction-to-Ambient Thermal Resistance RθJA 17 °C/W Mounted on Allegro ASEK732/3 evaluation board 4
Junction-to-Lead Thermal Resistance RθJL 5 °C/W Mounted on Allegro ASEK732/3 evaluation board 4

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 copper [2] The Allegro evaluation board has 1500 mm2 of 2 oz. copper on each side, connected to pins 1 through 4 and pins 5 through 8, with thermal vias 4

CAD (KiCad official)

  • Symbol: ACS720KLATR-35AB-T
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
  • 3D model files: acs720klatr-35ab-t-etched.step / acs720klatr-35ab-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); acs720klatr-35ab-t.step / acs720klatr-35ab-t.glb are the bare package body.

Provenance

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

  • Datasheet: Allegro MicroSystems LLC datasheet (35 pp, sha256 21cf76f28d33786d, retrieved 2026-10-19, 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