Overview
The Texas Instruments LM2676SX-ADJ/NOPB is a high-efficiency, step-down (buck) switching voltage regulator. This component is part of the SIMPLE SWITCHER® power converter series and is designed to provide all the active functions necessary for a step-down switching regulator. It is capable of driving up to 3A loads with excellent line and load regulation characteristics. The LM2676SX-ADJ/NOPB is available in an adjustable output version, allowing the output voltage to be set between 1.2V and 37V. This regulator is known for its simplicity and ease of design, requiring a minimum number of external components.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Part Number | LM2676SX-ADJ/NOPB | |
| Package Type | TO-263-7 | |
| Converter Type | Step Down | |
| Number of Outputs | 1 | |
| Output Type | Adjustable | |
| Minimum Input Voltage | 8 V | |
| Maximum Input Voltage | 40 V | |
| Minimum Output Voltage | 1.2 V | |
| Maximum Output Voltage | 37 V | |
| Output Current | Up to 3 A | |
| Oscillator Frequency | 260 kHz | |
| Operating Junction Temperature | -40°C to 125°C | |
| Efficiency | Up to 94% | |
| Quiescent Current | 50 µA (standby) |
Key Features
- High Efficiency: The LM2676SX-ADJ/NOPB achieves high efficiency, up to 94%, through the use of a low ON-resistance DMOS power switch.
- Adjustable Output: The output voltage can be adjusted from 1.2V to 37V, providing flexibility in various applications.
- Simple Design: The SIMPLE SWITCHER® concept allows for a complete design using a minimum number of external components, simplifying the design process.
- Fixed Frequency Oscillator: A high fixed frequency oscillator (260 kHz) enables the use of physically smaller sized components.
- Thermal Shutdown and Current Limiting: Built-in thermal shutdown and current limiting protect the device from overheating and overcurrent conditions).
- Low Quiescent Current: The regulator has a low standby quiescent current of 50 µA when switched off).
- Precision Output Voltage: The output voltage is ensured to a ±2% tolerance over the full line and load conditions).
Applications
- Communication Modules: Suitable for use in communication equipment due to its high efficiency and reliability).
- Electricity Meters: Used in metering applications where precise voltage regulation is required).
- Motor Drives: Can be used in motor drive systems due to its ability to handle high current loads).
- Calling Button Operating Panels: Applicable in control panels and user interfaces where stable voltage is necessary).
Q & A
- What is the maximum output current of the LM2676SX-ADJ/NOPB?
The maximum output current is up to 3 A).
- What is the input voltage range for the LM2676SX-ADJ/NOPB?
The input voltage range is from 8 V to 40 V).
- What is the adjustable output voltage range for the LM2676SX-ADJ/NOPB?
The output voltage can be adjusted from 1.2 V to 37 V).
- What is the oscillator frequency of the LM2676SX-ADJ/NOPB?
The oscillator frequency is 260 kHz).
- Does the LM2676SX-ADJ/NOPB have built-in thermal shutdown and current limiting?
Yes, it has built-in thermal shutdown and current limiting).
- What is the quiescent current when the regulator is in standby mode?
The quiescent current in standby mode is 50 µA).
- What is the typical efficiency of the LM2676SX-ADJ/NOPB?
The typical efficiency is up to 94%).
- What is the operating junction temperature range for the LM2676SX-ADJ/NOPB?
The operating junction temperature range is from -40°C to 125°C).
- What type of package does the LM2676SX-ADJ/NOPB come in?
The LM2676SX-ADJ/NOPB comes in a TO-263-7 package).
- Is the LM2676SX-ADJ/NOPB RoHS compliant?
Yes, the LM2676SX-ADJ/NOPB is RoHS compliant).
