Overview
The LM4120AIM5-2.5/NOPB from Texas Instruments is a precision low-power, low dropout bandgap voltage reference. This device is designed to provide a stable output voltage with high accuracy and low temperature drift. 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/NOPB is particularly suited for battery-powered and portable applications due to its low dropout voltage, low supply current, and power-down capability, which reduces the device current to less than 2 µA in power-down mode.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Reference Voltage | 2.5 V | |
| Tolerance | ±0.2% | |
| Package | SOT-23-5 | |
| Operating Temperature Range | −40°C to 85°C | Industrial range; extended range up to 125°C available upon request |
| Maximum Output Current | ±5 mA | Source and sink capability |
| Supply Current | 160 µA (typical) | |
| Dropout Voltage | 120 mV (typical at 1 mA) | |
| Temperature Coefficient | 50 ppm/°C | |
| Enable Pin | Available |
Key Features
- Small SOT23-5 Package: Compact design suitable for space-constrained applications.
- Low Dropout Voltage: Typical dropout voltage of 120 mV at 1 mA.
- High Output Voltage Accuracy: Initial accuracy of ±0.2% for grade A devices.
- 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 over the operating temperature range.
- Enable Pin: Allows for power-down mode with current less than 2 µA.
- Fixed Output Voltages: Available in several fixed output voltages including 1.8, 2.048, 2.5, 3, 3.3, 4.096, and 5 V.
Applications
- Portable, Battery-Powered Equipment: Ideal for devices requiring low power consumption and high accuracy.
- Instrumentation and Process Control: Suitable for precision measurement and control systems.
- Automotive and Industrial: Used in various automotive and industrial applications requiring stable voltage references.
- Test Equipment: Employed in test and measurement equipment for precision voltage referencing.
- Data Acquisition Systems: Used in data acquisition systems to ensure accurate voltage levels.
- Precision Regulators: Utilized in precision voltage regulator circuits.
- Battery Chargers: Used in battery charging systems to maintain precise voltage levels.
- Base Stations and Communications: Applied in telecommunications and base station equipment.
- Medical Equipment: Employed in medical devices requiring high precision and reliability.
Q & A
- What is the reference voltage of the LM4120AIM5-2.5/NOPB?
The reference voltage of the LM4120AIM5-2.5/NOPB is 2.5 V with a tolerance of ±0.2%.
- What is the typical supply current of the LM4120AIM5-2.5/NOPB?
The typical supply current is 160 µA.
- What is the maximum output current of the LM4120AIM5-2.5/NOPB?
The device can source and sink up to ±5 mA.
- What is the operating temperature range of the LM4120AIM5-2.5/NOPB?
The industrial operating temperature range is −40°C to 85°C, with an extended range up to 125°C available upon request.
- Does the LM4120AIM5-2.5/NOPB have an enable pin?
Yes, the device includes an enable pin for power-down mode.
- What is the dropout voltage of the LM4120AIM5-2.5/NOPB?
The typical dropout voltage is 120 mV at 1 mA.
- What are the available fixed output voltages for the LM4120 series?
The LM4120 series is available in several fixed output voltages including 1.8, 2.048, 2.5, 3, 3.3, 4.096, and 5 V.
- Is the LM4120AIM5-2.5/NOPB suitable for battery-powered applications?
Yes, it is ideal for battery-powered and portable applications due to its low power consumption and low dropout voltage.
- What is the temperature coefficient of the LM4120AIM5-2.5/NOPB?
The temperature coefficient is 50 ppm/°C.
- What package type does the LM4120AIM5-2.5/NOPB come in?
The device is packaged in a 5-pin SOT-23 package.
