Overview
The LM4120AIM5-5.0 is a precision low-power, low dropout bandgap voltage reference from Texas Instruments. This device is designed to provide high accuracy and stability, making it ideal for a variety of applications, including battery-powered and portable equipment. The LM4120 operates with input voltages ranging from 2 V to 12 V and consumes a typical supply current of 160 μA. It also features a power-down mode where the device current drops to less than 2 μA.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage Options | 1.8, 2.048, 2.5, 3, 3.3, 4.096, 5 | V |
| Output Current Source/Sink | ±5 | mA |
| Supply Current | 160 | μA |
| Dropout Voltage (Typical at 1 mA) | 120 | mV |
| Output Voltage Accuracy (Grade A) | ±0.2% | |
| Temperature Coefficient | 50 | ppm/°C |
| Industrial Temperature Range | −40°C to 85°C | |
| Extended Temperature Range | −40°C to 125°C (Contact TI for full specs) | |
| Package | SOT-23 (5-pin) | |
| Body Size (Nominal) | 1.60 mm × 2.90 mm |
Key Features
- Small SOT23-5 package
- Low dropout voltage: 120 mV typical at 1 mA
- High output voltage accuracy: 0.2% for Grade A devices
- Source and sink current output: ±5 mA
- Low supply current: 160 μA typical
- Low temperature coefficient: 50 ppm/°C
- Enable pin for remote operation and power-down capability
- Fixed output voltages: 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
- Communications equipment
- Medical equipment
Q & A
- What is the typical dropout voltage of the LM4120 at 1 mA load current?
The typical dropout voltage is 120 mV at 1 mA load current. - What are the available 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 maximum output current source/sink capability of the LM4120?
The LM4120 can source and sink up to ±5 mA. - What is the typical supply current of the LM4120?
The typical supply current is 160 μA. - What is the temperature coefficient of the LM4120?
The temperature coefficient is 50 ppm/°C. - What is the industrial temperature range of the LM4120?
The industrial temperature range is −40°C to 85°C. - Can the LM4120 operate in an extended temperature range?
Yes, it can operate in an extended temperature range of −40°C to 125°C, but contact TI for full specifications. - What package type is the LM4120 available in?
The LM4120 is available in a 5-pin SOT-23 package. - How does the enable pin function on the LM4120?
The enable pin allows for remote operation and power-down capability. It requires about 6 μA to start up the device and must be pulled to ground to shut down. - What are the recommended output capacitors for the LM4120?
The recommended output capacitors range from 0.022 μF to 1 μF, with ceramic or tantalum capacitors depending on the application.
