Overview
The LM4050AEM3-2.5 is a precision micropower shunt voltage reference produced by Texas Instruments. This device is part of the LM4050 series, which offers high precision and stability in a compact package. The LM4050AEM3-2.5 is specifically designed for applications requiring a fixed 2.5V output voltage, making it ideal for space-constrained designs where feedback resistors are not necessary.
The device operates within a wide temperature range, from -40°C to 125°C, and is available in both industrial and extended temperature versions. It behaves as a high-precision Zener diode, regulating voltage between its cathode and anode based on the supplied current.
Key Specifications
| Parameter | Test Conditions | MIN | TYP | MAX | Unit |
|---|---|---|---|---|---|
| Reverse Breakdown Voltage | IR = 100 μA | 2.500 | 2.500 | 2.500 | V |
| Reverse Breakdown Voltage Tolerance | Industrial Temperature Range | ±11 | ±11 | mV | |
| Reverse Breakdown Voltage Tolerance | Extended Temperature Range | ±15 | ±15 | mV | |
| Minimum Operating Current | TA = TJ = 25°C | 41 | 60 | 65 | μA |
| Average Reverse Breakdown Voltage Temperature Coefficient | IR = 100 μA, TA = TJ = 25°C | ±15 | ±15 | ppm/°C | |
| Reverse Breakdown Voltage Change with Operating Current | IRMIN ≤ IR ≤ 1 mA, TA = TJ = 25°C | 0.3 | 0.8 | 1.2 | mV |
Key Features
- High Precision: Initial accuracy of ±0.1% for the A-grade version.
- Wide Operating Current Range: 60 μA to 15 mA.
- Low Output Noise: 28 μVRMS output noise from 10 Hz to 10 kHz.
- No Output Capacitors Required: Internally compensated for stability without the need for external capacitors.
- Ultra-Small Package: Available in a 3-pin SC70 package, ideal for space-constrained applications.
- Temperature Stability: Guaranteed temperature coefficient of 50 ppm/°C over the -40°C to +125°C temperature range.
- Capacitive Load Tolerance: Stable operation with capacitive loads.
Applications
- Portable, Battery-Powered Equipment: Suitable for devices like handheld instruments and portable electronics.
- Notebook Computers and Cell Phones: Ideal for power management in mobile devices.
- Industrial Process Controls: Used in industrial automation and control systems.
- Automotive Systems: Applicable in automotive electronics requiring precise voltage references.
Q & A
- What is the fixed output voltage of the LM4050AEM3-2.5?
The fixed output voltage of the LM4050AEM3-2.5 is 2.5V.
- What is the temperature range for the LM4050AEM3-2.5?
The device operates from -40°C to 125°C.
- What is the minimum operating current for the LM4050AEM3-2.5?
The minimum operating current is 41 μA at 25°C.
- Does the LM4050AEM3-2.5 require external capacitors for stability?
No, the device is internally compensated and does not require external capacitors for stability.
- What is the typical output noise of the LM4050AEM3-2.5?
The typical output noise is 28 μVRMS from 10 Hz to 10 kHz.
- What is the maximum temperature coefficient of the LM4050AEM3-2.5?
The maximum temperature coefficient is 50 ppm/°C.
- Can the LM4050AEM3-2.5 handle capacitive loads?
- What package type is the LM4050AEM3-2.5 available in?
The device is available in a 3-pin SC70 package.
- What are some common applications of the LM4050AEM3-2.5?
Common applications include portable electronics, notebook computers, cell phones, industrial process controls, and automotive systems.
- What is the reverse breakdown voltage tolerance for the LM4050AEM3-2.5 in the industrial temperature range?
The reverse breakdown voltage tolerance is ±11 mV in the industrial temperature range.
