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Product Description
Broadcom 600kHz Fully Integrated Hall-effect Linear Current Sensor - Overcurrent Detection - SSO-12 - Surface-Mount - Tape-and-Reel - UL1577 Approval - 1000 Per Reel - ACHL-7345CU-500E
ACHL-7345xU is a fully integrated Hall-effect based isolated linear current sensor device that is designed for AC or DC current sensing in automotive applications. The ACHL-7345xU consists of a precise, low-offset, linear Hall circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field that the Hall IC converts into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer.
A precise, proportional voltage is provided by the low-offset, chopper-stabilized CMOS Hall IC, which is programmed for accuracy after packaging. The output of the device has a positive slope (>VOCM) when an increasing current flows through the primary copper conduction path (from pin 1 to pin 6), which is the path used for current sampling.
The internal resistance of this conductive path is 0.7 mΩ typical, providing low power loss. The terminals of the conductive path are electrically isolated from the signal leads (pins 7 through 12). This performance is delivered in a compact, auto-insert, SSO-12 package that meets worldwide regulatory safety standards.
- Wide operating temperature: –40°C to +125°C
- Internal conductor resistance: 0.7 mΩ typical
- Output voltage proportional to AC or DC currents
- Current sensing range: ±50A
- Sensitivity: 25 mV/A typical
- Ratiometric output from supply voltage
- Single supply operation: 5.0V
- Bandwidth: 600 kHz typical
- Overcurrent fault feedback: 0.8 μs typical
- Total output error: ±1% typical
- Common mode transient immunity: >25 kV/μs
- Small footprint, low-profile SSO-12 package
- Worldwide safety approval: IEC/EN62368-1, UL/cUL1577
- Isolation voltage: 4.24 kVrms, 1 minute
Applications
- Current sensing in AC and servo motor drives
- Current sensing for industrial robot
- Low-power inverter current sensing
- Motor phase and rail current sensing
- Output phase current sensing in photovoltaic inverters
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