CS30CL

Overview

The CS30CL is a high-side current sense amplifier manufactured by STMicroelectronics, designed to measure small differential voltages across a shunt resistor and translate them into a ground-referenced output voltage. It features an internally fixed gain of 20 V/V, a wide input common-mode operating range from 2.8 V to 30 V, and a surviving range up to 60 V. The device operates on a supply voltage between 4 V and 24 V with a maximum quiescent current of 300 µA. Key electrical parameters include a 450 kHz bandwidth, 0.9 V/µs slew rate, 200 µV input offset voltage, and 5.5 µA input bias current. It provides a buffered output capable of sourcing 60 mA and functions within a temperature range of -40°C to 125°C in a SOT-23-5 package.

Feature Summary

• Independent power supply and input common-mode voltage domains allow flexible circuit topology.
• Wide common-mode voltage range supports operation in high-voltage environments up to 30 V.
• Low quiescent current consumption enables efficient battery-powered or always-on monitoring applications.
• Integrated buffered output simplifies interface requirements for downstream signal processing.

Applications

• High-side current sensing in industrial control systems
• Battery management and protection circuits
• Power supply monitoring and load regulation

Procurement Notes

Verify the specific suffix 'CL' against the manufacturer's official datasheet to confirm the exact gain configuration and package variant. Ensure compatibility with the required operating temperature range and supply voltage constraints. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Cross-reference the ordering part number with the latest STMicroelectronics documentation to avoid discrepancies in pinout or electrical specifications.

Selection Notes

Select this component when a high-side measurement solution with independent supply and common-mode ranges is required. The fixed gain eliminates external resistor tolerance errors, while the low quiescent current benefits power-sensitive designs. Consider the SOT-23-5 package size for space-constrained layouts. Verify that the 450 kHz bandwidth meets the dynamic response needs of the application.

Part Context

The CS30CL belongs to the CS30 family of high-side current sense amplifiers from STMicroelectronics. This series is characterized by its ability to operate with independent supply and common-mode voltages, making it suitable for various power monitoring tasks. The family includes variants with different fixed gains to accommodate different shunt resistor values and voltage levels.

Replacement Considerations

Consult the official CS30 datasheet for confirmed substitute part numbers within the same product family. Ensure any replacement maintains the same gain, package type, and electrical characteristics.