Overview
The CS30CL, produced by STMicroelectronics, is a high-side current sense amplifier designed to measure small differential voltages across a high-side shunt resistor and translate them into a ground-referenced output voltage. This component is particularly useful in applications where high-side current sensing is required, such as in wireless battery chargers, chargers for portable equipment, precision current sources, and wearable devices. The CS30CL features independent supply and input common-mode voltages, a wide common-mode operating range, and low current consumption, making it versatile and efficient for various use cases.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Temperature Range | -40°C to +125°C | |
| Package | SOT23-5L | |
| Gain | 100 V/V | |
| Supply Voltage Range | 4 to 24 V | |
| Common Mode Voltage Range | 2.8 to 30 V | |
| Maximum Junction Temperature | 150 °C | |
| Total Supply Current | 300 µA (max) | |
| Output Voltage Drift vs. Temperature | 0.4 mV/°C | |
| 3dB Bandwidth | 450 kHz | |
| Slew Rate | 0.9 V/µs | |
| Total Output Voltage Noise | 50 nV/√Hz |
Key Features
- Independent supply and input common-mode voltages.
- Wide common-mode operating range: 2.8 to 30 V.
- Wide common-mode surviving range: -0.3 to 60 V (load-dump).
- Low current consumption: ICC max = 300 µA.
- Internally fixed gain: 100 V/V for CS30CL.
- Buffered output.
- Tiny SOT23 packaging.
- High accuracy and low output voltage drift versus temperature.
Applications
- Wireless battery chargers.
- Chargers for portable equipment.
- Precision current sources.
- Wearable devices.
- Any application requiring high-side current sensing.
Q & A
- What is the primary function of the CS30CL?
The CS30CL is a high-side current sense amplifier that measures small differential voltages across a shunt resistor and translates them into a ground-referenced output voltage. - What is the gain of the CS30CL?
The gain of the CS30CL is internally fixed at 100 V/V. - What is the operating temperature range of the CS30CL?
The operating temperature range is -40°C to +125°C. - What is the maximum supply voltage for the CS30CL?
The maximum supply voltage is 24 V. - What is the common mode voltage range of the CS30CL?
The common mode voltage range is 2.8 to 30 V. - How much current does the CS30CL consume?
The total supply current is a maximum of 300 µA. - What is the output voltage drift versus temperature for the CS30CL?
The output voltage drift versus temperature is 0.4 mV/°C. - What is the 3dB bandwidth of the CS30CL?
The 3dB bandwidth is 450 kHz. - What is the slew rate of the CS30CL?
The slew rate is 0.9 V/µs. - What are some typical applications of the CS30CL?
Typical applications include wireless battery chargers, chargers for portable equipment, precision current sources, and wearable devices.
