The INA300-Q1 is a high common-mode, current-sensing comparator thatdetects overcurrent conditions by measuring the voltage developed across acurrent-sensing or shunt resistor. The device measures this differential voltage signal oncommon-mode voltages that can vary from 0 V up to 36 V, independent of the supply voltage. TheINA300-Q1 device features an adjustable threshold range that is setusing a single external limit-setting resistor. A selectable hysteresisfeature enables adjustable operation of the comparator to accommodate the wide input signal rangeof 0 mV to 250 mV.
An open-drain alert output on the device can be configured to operate in either a transparent mode where the output status follows the input state, or in a latched mode where the alert output is cleared when the latch is cleared. The device response time setting is selectable, which enables overcurrent alerts to be issued in as fast as 10 μs.
The INA300-Q1 device operates from a single 2.7-V to 5.5-V supply, drawing a maximum supply current of 135 μA. The INA300-Q1 device is specified over the extended operating temperature range of –40°C to +125°C, and is available in a VSSOP-10 package.
Feature
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C6
- Wide Common-Mode Range: 0 V to 36 V
- Selectable Response Times:
- 10 μs, 50 μs, 100 μs
- Programmable Threshold:
- Adjust Using Single Resistor
- Programmable From 0 mV to 250 mV
- Accuracy:
- Offset Voltage: ±500 μV (Maximum)
- Offset Voltage Drift: 0.5 μV/°C (Maximum)
- Selectable Hysteresis:
- 2 mV, 4 mV, 8 mV
- Active Quiescent Current: 135 μA (Maximum)
- Selectable Disable Mode
- Disabled Quiescent Current: 3.5 μA (Maximum)
- Disabled Input Bias Current: 500 nA (Maximum)
- Open-Drain Output With Latch Mode Available
