Overview
The LM4120AIM5-5.0/NOPB, produced by Texas Instruments, is a precision low-power, low dropout bandgap voltage reference. This device is designed to provide high output voltage accuracy and low temperature coefficient, making it ideal for various applications requiring stable voltage references. The LM4120 operates with input voltages ranging from 2 V to 12 V and consumes a typical supply current of 160 µA. It features an enable pin and can source or sink up to 5 mA of current. The device is available in a small SOT23-5 package and is suitable for battery-powered and portable applications due to its low dropout voltage and power-down capability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage Options | 1.8, 2.048, 2.5, 3, 3.3, 4.096, 5 | V |
| Output Voltage Accuracy (Grade A) | 0.2% | |
| Output Voltage Accuracy (Standard Grade) | 0.5% | |
| Temperature Coefficient | 50 ppm/°C | |
| Source and Sink Current Output | ±5 mA | |
| Supply Current (Typical) | 160 µA | |
| Dropout Voltage (Typical at 1 mA) | 120 mV | |
| Industrial Temperature Range | −40°C to 85°C | |
| Extended Temperature Range (Contact TI for full specs) | −40°C to 125°C | |
| Package Type | SOT23-5 |
Key Features
- Small SOT23-5 package for compact designs.
- Low dropout voltage of 120 mV typical at 1 mA.
- High output voltage accuracy of 0.2% for Grade A devices and 0.5% for Standard Grade devices.
- Source and sink current output capability of ±5 mA.
- Low supply current of 160 µA typical.
- Low temperature coefficient of 50 ppm/°C.
- Enable pin for power-down mode, reducing current to less than 2 µA.
- Seven fixed output voltage options: 1.8, 2.048, 2.5, 3, 3.3, 4.096, and 5 V.
Applications
- Portable, battery-powered equipment.
- Instrumentation and process control.
- Automotive and industrial applications.
- Test equipment.
- Data acquisition systems.
- Precision regulators.
- Battery chargers.
- Base stations and communications equipment.
- Medical equipment.
Q & A
- What is the typical supply current of the LM4120?
The typical supply current of the LM4120 is 160 µA.
- What are the output voltage options for the LM4120?
The LM4120 is available with fixed output voltages of 1.8, 2.048, 2.5, 3, 3.3, 4.096, and 5 V.
- What is the temperature coefficient of the LM4120?
The temperature coefficient of the LM4120 is 50 ppm/°C.
- What is the maximum output current capability of the LM4120?
The LM4120 can source or sink up to 5 mA of current.
- What is the dropout voltage of the LM4120 at 1 mA?
The dropout voltage of the LM4120 is typically 120 mV at 1 mA.
- What is the purpose of the enable pin on the LM4120?
The enable pin allows the device to enter a power-down mode, reducing the current to less than 2 µA.
- What is the industrial temperature range of the LM4120?
The industrial temperature range of the LM4120 is −40°C to 85°C.
- Is the LM4120 suitable for battery-powered applications?
Yes, the LM4120 is ideal for battery-powered and portable applications due to its low dropout voltage and power-down capability.
- What package type is the LM4120 available in?
The LM4120 is available in a standard 5-pin SOT-23 package.
- Can the LM4120 operate in extended temperature ranges?
Yes, certain specifications are ensured over the extended temperature range of −40°C to 125°C. Contact TI for full specifications.
