Overview
The LM4120AIM5X-3.3/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 suitable for a variety of applications, particularly in 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 features an enable pin for power-down mode, where the device current drops to less than 2 µA. Available in a standard 5-pin SOT-23 package, this device is ideal for applications requiring precise voltage referencing with minimal power consumption.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (5) | - |
| Body Size (Nom) | 1.60 mm × 2.90 mm | - |
| Output Voltage Options | 1.8, 2.048, 2.5, 3, 3.3, 4.096, 5 V | V |
| Output Voltage Accuracy (Grade A) | ±0.2% | % |
| Output Voltage Accuracy (Standard) | ±0.5% | % |
| Temperature Coefficient | 50 ppm/°C | ppm/°C |
| Source and Sink Current Output | ±5 mA | mA |
| Supply Current (Typical) | 160 µA | µA |
| Dropout Voltage (Typical at 1 mA) | 120 mV | mV |
| Industrial Temperature Range | −40°C to 85°C | °C |
| Extended Temperature Range (Contact TI) | −40°C to 125°C | °C |
Key Features
- Small Package: Available in a standard 5-pin SOT-23 package.
- Low Dropout Voltage: Typical dropout voltage of 120 mV at 1 mA.
- High Output Voltage Accuracy: Grade A devices have an initial accuracy of 0.2%, while standard devices have an initial accuracy of 0.5%.
- Source and Sink Current Output: Capable of sourcing and sinking up to ±5 mA.
- Low Supply Current: Typical supply current of 160 µA.
- Low Temperature Coefficient: 50 ppm/°C ensured from −40°C to 125°C.
- Enable Pin: Allows for power-down mode, reducing device current to less than 2 µA.
- Fixed Output Voltages: Available in seven fixed output voltage options.
Applications
- Portable, Battery-Powered Equipment: Ideal for devices requiring low power consumption and high precision.
- Instrumentation and Process Control: Suitable for applications needing stable voltage references.
- Automotive and Industrial: Used in various automotive and industrial systems requiring precise voltage referencing.
- Test Equipment: Utilized in test and measurement equipment for stable voltage outputs.
- Data Acquisition Systems: Provides precise voltage references for data acquisition systems.
- Precision Regulators: Used in precision voltage regulator circuits.
- Battery Chargers: Employed in battery charging systems for accurate voltage control.
- Base Stations and Communications: Used in communication equipment and base stations.
- Medical Equipment: Suitable for medical devices requiring high precision and reliability.
Q & A
- What is the typical supply current of the LM4120?
The typical supply current of the LM4120 is 160 µA.
- 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 temperature coefficient of the LM4120?
The temperature coefficient of the LM4120 is 50 ppm/°C.
- What is the maximum source and sink current output of the LM4120?
The LM4120 can source and sink up to ±5 mA.
- What is the typical dropout voltage of the LM4120 at 1 mA?
The typical dropout voltage of the LM4120 at 1 mA is 120 mV.
- What is the industrial temperature range of the LM4120?
The industrial temperature range of the LM4120 is −40°C to 85°C.
- Does the LM4120 have an enable pin?
Yes, the LM4120 features an enable pin for power-down mode.
- What is the package type of the LM4120?
The LM4120 is available in a standard 5-pin SOT-23 package.
- Is the LM4120 suitable for battery-powered applications?
Yes, the LM4120 is ideal for battery-powered and portable applications due to its low power consumption and high precision.
- What are some common applications of the LM4120?
The LM4120 is used in portable equipment, instrumentation, automotive and industrial systems, test equipment, data acquisition systems, precision regulators, battery chargers, base stations, communications, and medical equipment.
