LMC7221BIM5X/NOPB

Overview

The LMC7221BIM5X/NOPB is a low-power, high-voltage analog comparator manufactured by Texas Instruments. It features an open-drain output and operates within a supply voltage range of 2.7 V to 15 V. The device draws a typical operating supply current of 14 uA and provides a maximum channel output current of 45 mA. Key electrical parameters include a response time of 4 us, an input offset voltage (Vos) of 5 mV, and an input bias current (Ib) of 0.4 pA. It offers a common-mode rejection ratio (CMRR) of 75 dB and a power-supply rejection ratio (PSRR) of 80 dB. The component supports rail-to-rail inputs and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Low power consumption with high voltage operation capability
• Rail-to-rail input compatibility for wide signal range
• Open-drain output configuration for flexible interfacing

Applications

• General purpose analog comparison circuits
• Battery-powered systems requiring low quiescent current
• High-voltage signal monitoring applications

Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free compliance and RoHS status as per manufacturer documentation. Confirm the 'X' designation corresponds to reel packaging specifications. Ensure the SOT-23-5 package variant matches the intended PCB footprint. Cross-reference the datasheet revision date to confirm parameter accuracy. Validate that the open-drain output requirements align with the system pull-up configuration.

Selection Notes

Select this component when rail-to-rail input capability is required alongside low power consumption in a compact SOT-23-5 package. The open-drain output necessitates an external pull-up resistor, which should be sized according to the desired switching speed and load conditions. Consider the 4 us response time for application timing constraints. Verify that the 15 V maximum supply voltage meets the system's operational limits.

Part Context

This part belongs to the LMC7221 series of low-power comparators from Texas Instruments. It shares functional similarities with other members of the family but is distinguished by its specific pinout and packaging in the SOT-23-5 form factor. The NOPB suffix typically denotes environmental compliance, while the 'X' often indicates tape-and-reel packaging for automated assembly processes.

Replacement Considerations

LMC7221BIM5/NOPB is a verified substitute offering identical electrical characteristics and functionality in the same SOT-23-5 package. Both parts share the same pinout and performance specifications, allowing for direct replacement without circuit modification.