Product Overview
The Allegro ACS773 family of current sensor ICs offers economical and precise solutions for AC or DC current sensing, ideal for motor control, load detection and management, power supply and DC-to-DC converter control, and inverter control. With a 2.5 s response time, it enables overcurrent fault detection in safety-critical applications. The device features a precision, low-offset linear Hall circuit with a copper conduction path for current sensing, generating a magnetic field converted into a proportional voltage. It boasts proprietary digital temperature compensation for improved accuracy and temperature stability, and integrated shield technology for high-level immunity to dV/dt and stray electric fields. Reinforced galvanic isolation allows for high-side current sensing in high-voltage systems with certified dielectric strength.
Product Attributes
- Brand: Allegro
- Certifications: AEC-Q100 Grade 1 qualified; UL60950-1 certified (4800 VRMS dielectric strength)
- Material: Lead (Pb) free; 100% matte tin plating; oxygen-free copper leadframe
Technical Specifications
| Model/Variant | Current Sensing Range (IP) | Sensitivity (Typ.) (mV/A) | Operating Temperature Range | Output Type | Bandwidth | Internal Conductor Resistance | Response Time (Typ.) | Dielectric Strength |
|---|---|---|---|---|---|---|---|---|
| ACS773LCB-050B-PFF-T / -SMT-T | 50 A | 26.4 | 40 to 150 C | Ratiometric | 200 kHz | 100 | 2.5 s | 4800 VRMS |
| ACS773LCB-100B-PFF-T / -SMT-T | 100 A | 13.2 | 40 to 150 C | Ratiometric | 200 kHz | 100 | 2.5 s | 4800 VRMS |
| ACS773KCB-150B-PFF-T / -SMT-T | 150 A | 8.8 | 40 to 125 C | Ratiometric | 200 kHz | 100 | 2.5 s | 4800 VRMS |
| ACS773ECB-200B-PFF-T / -PSF-T | 200 A | 6.6 | 40 to 85 C | Ratiometric | 200 kHz | 100 | 2.5 s | 4800 VRMS |
| ACS773ECB-250U-PSF-T | 0 to 250 A | 10.56 | 40 to 85 C | Unidirectional | 200 kHz | 100 | 2.5 s | 4800 VRMS |
| ACS773ECB-200B-PFF-NR-T | 200 A | 6 | 40 to 150 C | Non-ratiometric | 200 kHz | 100 | 2.5 s | 4800 VRMS |
| ACS773ECB-250B-PFF-NR-T | 250 A | 4.8 | 40 to 150 C | Non-ratiometric | 200 kHz | 100 | 2.5 s | 4800 VRMS |
| General Specifications | ||||||||
| Supply Voltage (VCC) | 3.3 V (Typical) | |||||||
| Supply Current (ICC) | 10 - 15 mA | |||||||
| Internal Conductor Resistance | 100 (Typical) | |||||||
| Bandwidth | 200 kHz | |||||||
| Isolation Voltage | 4800 VRMS (Certified under UL60950-1) | |||||||
| Package Type | 5-pin package (suffix CB) | |||||||
2407191458_ALLEGRO-ACS773LCB-050B-SMT-T_C3684554.pdf
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