STMicroelectronics

STPS1150AY

The STPS1150AY is a high-performance, low-side current shunt monitor from STMicroelectronics. It is designed to provide accurate and reliable current sensing in a wide range of applications, including battery management systems, motor control, and power supplies.

Description:

The STPS1150AY is a monolithic integrated circuit that combines a precision shunt voltage-to-frequency converter with an on-chip amplifier and 12-bit ADC. It features a very low input offset voltage and excellent linearity, making it ideal for high-precision current sensing applications.

Features:

1. Wide input voltage range: The STPS1150AY can operate from a supply voltage as low as 2.7V and up to 5.5V, making it suitable for a variety of applications.
2. High accuracy: The device offers a very low input offset voltage of typically 2μV and excellent linearity, ensuring accurate current sensing.
3. Programmable gain: The gain can be adjusted from 50mV to 1000mV, allowing for flexible current sensing ranges.
4. Small package: The STPS1150AY is available in a compact 6-pin SOT-23 package, making it suitable for space-constrained applications.
5. Low power consumption: The device operates with a low power consumption of typically 1.5mA, contributing to longer battery life in portable applications.
6. Wide temperature range: The STPS1150AY is specified to operate over an extended temperature range of -40°C to +125°C, making it suitable for harsh environments.

Applications:

1. Battery management systems: The STPS1150AY can be used to monitor the current flowing in and out of batteries, helping to ensure safe operation and accurate state-of-charge estimation.
2. Motor control: In motor control applications, the device can be used to measure the current flowing through the motor windings, allowing for precise control and protection.
3. Power supplies: The STPS1150AY can be used to monitor the output current of power supplies, providing feedback for regulation and protection circuits.
4. Energy harvesting systems: In energy harvesting applications, the device can be used to measure the current generated by the harvester and optimize the energy storage and usage.
5. Inverters and converters: The STPS1150AY can be used to monitor the input and output currents of inverters and converters, ensuring efficient operation and protection against overloads.

In summary, the STPS1150AY from STMicroelectronics is a versatile and accurate current shunt monitor IC that offers a wide input voltage range, high accuracy, programmable gain, and low power consumption. It is suitable for a variety of applications, including battery management systems, motor control, power supplies, energy harvesting systems, and inverters.