Overview
The LM26CIM5X-VPA/NOPB is a highly integrated thermostat (temperature switch) produced by Texas Instruments. This device combines an internal reference, temperature sensor, DAC, and comparator, making it a versatile component for temperature monitoring and control. The LM26 can be factory-programmed to have a trip point anywhere in the range of −55°C to +120°C, with various output functionalities such as overtemperature and undertemperature shutdown events. It is available in a compact 5-pin SOT-23 package, enhancing its suitability for a wide range of applications.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Power Supply Voltage (V+) | 2.7 | - | 5.5 | V |
| Power Supply Current | - | 16 | 40 | μA |
| Hysteresis Temperature | - | 2°C or 10°C | - | °C |
| Temperature Range | −55 | - | 125 | °C |
| Input Voltage | - | - | 6 | V |
| Package Type | - | - | SOT-23 (5-pin) | - |
| Junction-to-Ambient Thermal Resistance | - | - | 250 | °C/W |
Key Features
- No external components required for operation.
- Factory-programmable trip point between −55°C and +120°C in 1°C increments.
- Open-drain or push-pull digital output; supports overtemperature and undertemperature shutdown events.
- Internal temperature sensor with VTEMP output for temperature monitoring.
- Selectable hysteresis (2°C or 10°C) controlled by the HYST pin.
- Excellent power supply noise rejection.
- UL recognized component.
- VTEMP output allows for after-assembly system testing.
Applications
- Microprocessor thermal management.
- Appliances.
- Portable battery-powered systems.
- Fan control.
- Industrial process control.
- HVAC systems.
- Remote temperature sensing.
- Electronic system protection.
Q & A
- What is the LM26CIM5X-VPA/NOPB?
The LM26CIM5X-VPA/NOPB is a factory-preset thermostat (temperature switch) produced by Texas Instruments, integrating an internal reference, temperature sensor, DAC, and comparator.
- What is the temperature range for the trip point of the LM26?
The trip point can be factory-programmed to any temperature in the range of −55°C to +120°C in 1°C increments.
- What types of digital output are supported by the LM26?
The LM26 supports both open-drain and push-pull digital outputs, which can be programmed to indicate overtemperature or undertemperature shutdown events.
- How is the hysteresis controlled in the LM26?
The hysteresis is controlled by the state of the HYST pin, allowing for either 2°C or 10°C hysteresis.
- What is the purpose of the VTEMP output?
The VTEMP output provides a voltage proportional to the temperature, allowing for temperature monitoring and after-assembly system testing.
- What is the package type of the LM26CIM5X-VPA/NOPB?
The device is available in a 5-pin SOT-23 package.
- What are some common applications of the LM26?
Common applications include microprocessor thermal management, appliances, portable battery-powered systems, fan control, industrial process control, HVAC systems, remote temperature sensing, and electronic system protection.
- What is the power supply voltage range for the LM26?
The power supply voltage range is from 2.7 V to 5.5 V.
- What is the typical power supply current of the LM26?
The typical power supply current is 16 μA.
- Is the LM26CIM5X-VPA/NOPB UL recognized?
