Overview
The LT2940IMS#TRPBF from Analog Devices Inc. is a high-side current and differential voltage monitor integrated circuit. This device is designed to measure high-side current and differential voltage, multiply these values, and output a current proportional to the instantaneous power. It is available in a 12-lead MSOP package and operates over a temperature range of –40°C to 85°C, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Operating Voltage Range | 6 | 80 | V | ||
| Operating Temperature Range | –40 | 85 | °C | ||
| Power Monitor Output Compliance Voltage | VCC ≤ 12V, IPMON ≥ 0μA | 0 | VCC – 4.5 | V | |
| CMPOUT Output Low Voltage | CMP+ High, ICMPOUT = 3mA | 0.2 | 0.4 | V | |
| LATCH Input Open Voltage | 1.25 | 1.5 | 1.95 | V | |
| LATCH Input High Voltage | 2.0 | 2.2 | 2.5 | V | |
| LATCH Input Allowable Leakage in Open State | ±10 | μA |
Key Features
- High-side current and differential voltage measurement
- Outputs a current proportional to instantaneous power
- Operates over a wide voltage range of 6V to 80V
- Available in 12-lead MSOP package
- Temperature range: –40°C to 85°C
- Low output voltage compliance: VCC – 4.5V for VCC ≤ 12V
- LATCH input for external control
Applications
The LT2940IMS#TRPBF is suitable for various applications requiring precise power monitoring, such as:
- Power supply monitoring and control
- High-side current sensing in automotive and industrial systems
- Power management in data centers and server systems
- Energy monitoring in renewable energy systems
- General-purpose power and current monitoring in electronic devices
Q & A
- What is the operating voltage range of the LT2940IMS#TRPBF?
The operating voltage range is 6V to 80V. - What is the temperature range for the LT2940IMS#TRPBF?
The temperature range is –40°C to 85°C. - What type of package is the LT2940IMS#TRPBF available in?
The device is available in a 12-lead MSOP package. - How does the LT2940IMS#TRPBF measure power?
The device measures high-side current and differential voltage, then outputs a current proportional to the instantaneous power. - What is the typical output low voltage for the CMPOUT pin?
The typical output low voltage for the CMPOUT pin is 0.4V when CMP+ is high and ICMPOUT = 3mA. - Can the LT2940IMS#TRPBF be used in automotive systems?
Yes, it can be used for high-side current sensing in automotive systems. - What is the purpose of the LATCH input on the LT2940IMS#TRPBF?
The LATCH input allows for external control of the device. - Is the LT2940IMS#TRPBF suitable for power supply monitoring?
Yes, it is suitable for power supply monitoring and control. - What is the maximum allowable leakage current for the LATCH input in the open state?
The maximum allowable leakage current for the LATCH input in the open state is ±10 μA. - Can the LT2940IMS#TRPBF be used in data centers and server systems?
Yes, it can be used for power management in data centers and server systems.
