Overview
The LM4120AIM5-2.5 from 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. It operates with input voltages ranging from 2 V to 12 V and consumes a typical supply current of 160 µA. The LM4120AIM5-2.5 features an enable pin and can source and sink up to 5 mA of output current. It is available in a standard 5-pin SOT-23 package and is ideal for battery-powered and portable applications due to its low dropout voltage and power-down capability.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOT-23-5 |
| Output Voltage | 2.5 V |
| Initial Accuracy | 0.2% (Grade A), 0.5% (Standard) |
| Temperature Coefficient | 50 ppm/°C |
| Input Voltage Range | 2 V to 12 V |
| Supply Current | 160 µA (typical) |
| Output Current | ±5 mA |
| Dropout Voltage | 120 mV (typical at 1 mA) |
| Operating Temperature Range | −40°C to 85°C (industrial), −40°C to 125°C (extended) |
| Enable Pin | Yes |
Key Features
- High output voltage accuracy: 0.2% for Grade A devices and 0.5% for Standard devices.
- Low temperature coefficient: 50 ppm/°C from −40°C to 125°C.
- Low dropout voltage: 120 mV typical at 1 mA.
- Source and sink current capability: up to ±5 mA.
- Low supply current: 160 µA typical, less than 2 µA in power-down mode.
- Enable pin for power management.
- Compact SOT-23-5 package.
Applications
- Battery-powered and portable applications due to low dropout voltage and power-down capability.
- Instrumentation and process control.
- Automotive and industrial applications.
- Test equipment and data acquisition systems.
- Precision regulators and battery chargers.
- Base stations and communications equipment.
- Medical equipment requiring precise voltage references).
Q & A
- What is the output voltage accuracy of the LM4120AIM5-2.5?
The output voltage accuracy is 0.2% for Grade A devices and 0.5% for Standard devices.
- What is the temperature coefficient of the LM4120AIM5-2.5?
The temperature coefficient is 50 ppm/°C from −40°C to 125°C).
- What is the input voltage range for the LM4120AIM5-2.5?
The input voltage range is from 2 V to 12 V).
- How much current does the LM4120AIM5-2.5 consume in typical operation?
The device consumes a typical supply current of 160 µA).
- What is the maximum output current of the LM4120AIM5-2.5?
The device can source and sink up to ±5 mA of output current).
- Does the LM4120AIM5-2.5 have an enable pin?
Yes, the device features an enable pin for power management).
- What is the operating temperature range for the LM4120AIM5-2.5?
The operating temperature range is −40°C to 85°C (industrial), and −40°C to 125°C (extended)).
- In what package is the LM4120AIM5-2.5 available?
The device is available in a standard 5-pin SOT-23 package).
- What are some typical applications for the LM4120AIM5-2.5?
Typical applications include battery-powered and portable devices, instrumentation, automotive and industrial applications, test equipment, data acquisition systems, precision regulators, battery chargers, base stations, communications equipment, and medical equipment).
- How does the LM4120AIM5-2.5 perform in power-down mode?
In power-down mode, the device current drops to less than 2 µA).
