Overview
The LM4120AIM5-3.0/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 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 and can source and sink up to 5 mA of current. The device is available in a compact 5-pin SOT-23 package and ensures performance over an industrial temperature range of −40°C to 85°C, with extended temperature range specifications available upon request.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Output Voltage Options | 1.8, 2.048, 2.5, 3, 3.3, 4.096, 5 V | |
| Output Voltage Accuracy | ±0.2% (Grade A), ±0.5% (Standard) | |
| Temperature Coefficient | 50 ppm/°C | −40°C to 125°C |
| Source and Sink Current | ±5 mA | |
| Supply Current | 160 µA Typical | |
| Dropout Voltage | 120 mV Typical at 1 mA | |
| Enable Pin | Yes | |
| Package | 5-pin SOT-23 | |
| Industrial Temperature Range | −40°C to 85°C | |
| Extended Temperature Range | −40°C to 125°C (Contact TI for full specs) |
Key Features
- Small SOT23-5 package for compact design
- Low dropout voltage: 120 mV typical at 1 mA
- High output voltage accuracy: ±0.2% (Grade A), ±0.5% (Standard)
- Source and sink current output: ±5 mA
- Low supply current: 160 µA typical
- Low temperature coefficient: 50 ppm/°C
- Enable pin for power management
- Seven fixed output voltage options
- Industrial temperature range: −40°C to 85°C
- Power-down mode with current less than 2 µA
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 over the range of −40°C to 125°C.
- What is the maximum source and sink current of the LM4120?
The LM4120 can source and sink up to ±5 mA of current.
- What is the dropout voltage of the LM4120?
The typical dropout voltage of the LM4120 is 120 mV at 1 mA.
- Does the LM4120 have an enable pin?
Yes, the LM4120 features an enable pin for power management.
- What is the package type of the LM4120?
The LM4120 is available in a 5-pin SOT-23 package.
- What is the industrial temperature range of the LM4120?
The industrial temperature range of the LM4120 is −40°C to 85°C.
- Can the LM4120 operate in extended temperature ranges?
Yes, the LM4120 can operate in an extended temperature range of −40°C to 125°C, but contact TI for full specifications.
- What is the current consumption in power-down mode?
In power-down mode, the device current drops to less than 2 µA.
