MCP6546T-I/MS

Current - Output (Typ):	30mA
Base Part Number:	MCP6546
Supplier Device Package:	8-MSOP
Mounting Type:	Surface Mount
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 85°C
Hysteresis:	6.5mV
Propagation Delay (Max):	8µs
CMRR, PSRR (Typ):	70dB CMRR, 80dB PSRR
Current - Quiescent (Max):	1µA
Series:	--
Current - Input Bias (Max):	1pA @ 5.5V
Voltage - Input Offset (Max):	7mV @ 5.5V
Voltage - Supply, Single/Dual (±):	1.6 V ~ 5.5 V
Output Type:	CMOS, Open-Drain, Rail-to-Rail, TTL
Number of Elements:	1
Type:	General Purpose
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Overview of Linear-Comparators

Linear-Comparators are a type of electronic device which compare two different voltage levels or two different current levels and then provide an output signal indicating the relationship between the input levels. One type of linear-comparator is the MCP6546T-I/MS, which is a programmable power supply current comparator IC.

MCP6546T-I/MS Application Field and Working Principle

The MCP6546T-I/MS is a programmable power supply current comparator IC designed for portable devices, such as cell phones and laptops. The device is designed to save power by monitoring the battery\'s current across a shunt resistor and then reporting the current value to a host controller. It has two low voltage input channels (positive and negative) and an output channel for reporting the current through the shunt resistor.The MCP6546T-I/MS works by comparing the voltage across the shunt resistor to a predetermined threshold voltage, and then sending an output signal of either LOW or HIGH to the host controller depending on the comparison. This allows the host controller to take action to either increase or decrease the power supplied to the device based on the input current.The output signal triggers a comparator interrupt when the input current changes by greater than 4mA, and provides over-current protection of up to 8A. As an example, if the positive input voltage exceeds the negative input voltage by more than the predetermined threshold, the output signal will be HIGH, and the controller can take action to reduce the power supplied to the device.

Conclusion

The MCP6546T-I/MS is a powerful programmable current comparator IC designed for portable devices, such as cell phones and laptops. The device can save power by monitoring the battery\'s current across a shunt resistor, and then it provides an output signal to the host controller so that the controller can take action to increase or decrease the power supply based on the current level. The IC is designed to provide over-current protection of up to 8A and can trigger a comparator interrupt when the input current changes by greater than 4mA.

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