l   Wide Common Mode Range: 0V ~ 36V

l   Accuracy:

§   Offset Voltage: ±500μV (Max)

§   Offset Voltage Drift: 0.5μV/°C (Max)

l   Programmable Threshold:

§   Adjust Using Single Resistor

§   Programmable from 0 mV to 250 mV

l   Active Quiescent Current: 135μA (Typ)

l   Selectable Disable Mode

§   Disabled Quiescent Current: 1.2μA (Max)

§   Disabled Input Bias Current: 500nA (Max)

l   Three Selectable Response Times: 10μs, 50μs, 100μs

l   Three Selectable Hysteresis: 2 mV, 4 mV, 8 mV

l   Open Drain Output with Latch Mode Available

l   Packages: DFN2×2-10 and MSOP10

The SY24640 is a current sensing comparator with over-current protection and used for the over-current protection applications.

It measures the voltage developed across a shunt resistor and compares this voltage with an externally configured threshold. Independent of the supply voltage, the common voltage range of SY24640 is between 0V to 36V and the differential input range from 0mV to 250mV.

An open drain alert output can be configured to operate in either transparent mode or latched mode. The device response time setting is selectable, which allows over-current alerts to be issued within 10μs.

The SY24640 operates from a single 2.7V to 5.5V supply, drawing a typical supply current of 135μA. The device is provided in DFN2×2-10 and MSOP10 packages, and is specified over the extended operating temperature range of –40°C to +125°C.