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SOT25.pngAutomotive, 26V, 400kHz Bandwidth Uni-Directional, Low-Side and High-Side Current Monitor
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The ZXCT180Q is automotive AEC-Q qualified uni-directional current shunt monitor which is designed to be a cost-effective solution to deal with 26V common-mode in a smaller supply voltage range 2.7V to 5.5V powering the device.
The ZXCT180Q supports the small-signal bandwidths as high as 400kHz at 20V/V gain and fast large-signal slew rates of 2V/µs. This ability can be used to detect rapid changes in the sensed current and fast response to the output so that these features make the ZXCT180Q a good choice for applications such as low-side motor control and the system fault current detection.
OUT pin is a voltage proportional to the load current. Based on OUT pin configurations, ZXCT180 has Pinout A and B as a flexibility for users to choose a proper one for PCB layout. In addition, this device has four fixed voltage gain options in 20V/V, 50V/V, 100V/V, and 200V/V. It can measure voltage across shunts at common-mode voltages from -0.3V to 26V, independent of supply voltage with a maximum supply current of 370μA. All versions are AEC-Q100 grade 1 temperature range, -40°C to +125°C, and are offered in the SOT25 package.
| Compliance (Only Automotive supports PPAP) | Automotive |
|---|---|
| AEC Qualified | Yes |
| Type | Voltage output |
| Minimum S+ Common-Mode Sense Voltage (V) | -0.3 |
| Maximum S+ Common-Mode Sense Voltage (V) | 26 |
| Minimum VCC/VB Supply Voltage (V) | 2.7 |
| Maximum VCC/VB Supply Voltage (V) | 5.5 |
| Maximum Output Voltage (V) | (VS) - 0.03 |
| Voltage output Gain VOUT/VSENSE (V/V) | 20, 50, 100, 200 |
| % Accuracy @ VSENSE =100mV Ta (%) | 1 |
| Quiescent Current (µA) | 250 |
| Bandwidth typ (MHz) | 0.085 to 0.4 |
| Operating Ambient Temperature Range (°C) | -40 to 125 |
| Special Features | Uni-direction, high bandwidth |
Diodes Incorporated's current monitors are high-performance, high-side/power rail current measurement ICs. They greatly simplify the measurement of load currents without disturbing the ground plane/reference point.
The current monitor families contain variants with quiescent currents as low as 3µA, and others with operating voltages up to 60V, proving solutions for overcurrent detection in consumer, industrial, and automotive applications. The portfolio includes current output variants which via an external resistor to ground to provide adjustable gain, and voltage output variants with fixed gains.
Automotive-compliant variants are available which are qualified to AEC-Q100 Grade 1 in IATF 16949 facilities supporting PPAP documentation.
