Hall Effect Current Sensor ALLEGRO ACS732KLATR-40AB-T Featuring High Isolation and Low Magnetic Hysteresis
Product Overview
The Allegro ACS732 and ACS733 are next-generation, high-bandwidth Hall-effect current sensor ICs designed for accurate measurement of high-frequency currents in applications such as DC/DC converters and switching power supplies. These devices offer high isolation, user-configurable overcurrent fault detection, and a low 1 m primary conductor resistance for minimal power loss. Their compact, wide-body SOIC-16 package facilitates easy integration into automotive, industrial, commercial, and communications systems. Applications include motor control, load detection and management, switch-mode power supplies, and overcurrent fault protection. The sensors provide a proportional analog voltage output for both AC and DC currents, with factory-trimmed sensitivity and quiescent voltage for enhanced accuracy and nearly zero magnetic hysteresis.
Product Attributes
- Brand: Allegro
- Certifications: AEC-Q100 automotive qualified, UL60950-1 (ed. 2) certified
- Package: SOIC-16 wide body (LA)
- Lead Material: 100% matte tin plating
Technical Specifications
| Model | Optimized Range, IP (A) | Sensitivity, Sens (Typ) (mV/A) | Nominal Supply Voltage, VCC (V) | Operating Temperature Range (C) |
|---|---|---|---|---|
| ACS732KLATR-20AB-T | 20 | 100 | 5.0 | 40 to 125 |
| ACS732KLATR-40AB-T | 40 | 50 | 5.0 | 40 to 125 |
| ACS732KLATR-65AB-T | 65 | 30 | 5.0 | 40 to 125 |
| ACS732KLATR-65AU-T | 65 (Unidirectional) | 60 | 5.0 | 40 to 125 |
| ACS732KLATR-75AB-T | 75 | 26.6 | 5.0 | 40 to 125 |
| ACS733KLATR-20AB-T | 20 | 66 | 3.3 | 40 to 125 |
| ACS733KLATR-20AB-T-H | 20 | 66 | 3.3 | 40 to 125 |
| ACS733KLATR-40AB-T | 40 | 33 | 3.3 | 40 to 125 |
| ACS733KLATR-40AU-T | 40 (Unidirectional) | 66 | 3.3 | 40 to 125 |
| ACS733KLATR-65AB-T | 65 | 20 | 3.3 | 40 to 125 |
| Key Electrical Characteristics: | ||||
| Primary Conductor Resistance (RIP) | 1 m (typical) | |||
| Bandwidth | 1 MHz (analog output) | |||
| Isolation Voltage (Dielectric Strength) | 3.6 kVRMS | |||
| Isolation Voltage (Basic Isolation Working) | 616 VRMS | |||
| Overcurrent Fault Detection | Fast and externally configurable (50% to 200% of IPR(MAX)) | |||
| Supply Voltage (ACS732) | 4.75 V to 5.25 V | |||
| Supply Voltage (ACS733) | 3.14 V to 3.46 V | |||
| Zero Current Output Voltage (Bidirectional) | 0.5 VCC (nominal) | |||
| Zero Current Output Voltage (Unidirectional) | 0.1 VCC (nominal) | |||
| Fault Response Time (tRESPONSE(F)) | 0.2 to 0.75 s (typical) | |||
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