Overview
The LM2596SX-ADJ/NOPB is a step-down (buck) switching regulator from Texas Instruments, designed to provide efficient and reliable voltage regulation. This monolithic integrated circuit is capable of driving a 3-A load with excellent line and load regulation. The adjustable output version of the LM2596 allows for an output voltage range of 1.2 V to 37 V, making it versatile for various applications. The device operates at a fixed switching frequency of 150 kHz, enabling the use of smaller filter components compared to lower frequency regulators.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Part Number | LM2596SX-ADJ/NOPB | |
| Package | TO-263 (KTT) | |
| Input Voltage Range | 4.5 V to 40 V | V |
| Output Voltage Range | 1.2 V to 37 V (adjustable) | V |
| Output Current | 3 A | A |
| Switching Frequency | 150 kHz | kHz |
| Operating Temperature Range | -40°C to 125°C | °C |
| Standby Current | Typically 80 µA | µA |
Key Features
- Adjustable output voltage range: 1.2 V to 37 V ±4% maximum over line and load conditions
- High efficiency and excellent line and load regulation
- Fixed-frequency internal oscillator at 150 kHz
- TTL shutdown capability and low power standby mode
- Thermal shutdown and current-limit protection
- Uses readily available standard inductors
- Requires only four external components for operation
- Available in TO-220 and TO-263 packages
Applications
- Appliances
- Grid infrastructure
- EPOS (Electronic Point of Sale) systems
- Home theater systems
- General power supply applications requiring high efficiency and reliability
Q & A
- What is the input voltage range of the LM2596SX-ADJ/NOPB?
The input voltage range is from 4.5 V to 40 V.
- What is the adjustable output voltage range of the LM2596SX-ADJ/NOPB?
The adjustable output voltage range is from 1.2 V to 37 V.
- What is the maximum output current of the LM2596SX-ADJ/NOPB?
The maximum output current is 3 A.
- At what frequency does the LM2596SX-ADJ/NOPB operate?
The device operates at a fixed switching frequency of 150 kHz.
- What are the key protection features of the LM2596SX-ADJ/NOPB?
The device includes thermal shutdown, current-limit protection, and TTL shutdown capability.
- What packages are available for the LM2596SX-ADJ/NOPB?
The device is available in TO-220 and TO-263 packages.
- How many external components are required for the LM2596SX-ADJ/NOPB to operate?
The device requires only four external components for operation.
- What is the typical standby current of the LM2596SX-ADJ/NOPB?
The typical standby current is 80 µA.
- What are some common applications for the LM2596SX-ADJ/NOPB?
Common applications include appliances, grid infrastructure, EPOS systems, and home theater systems.
- Can the LM2596SX-ADJ/NOPB be used in safety-critical applications?
It is important to consult the datasheet and relevant documentation to ensure compliance with safety-critical application requirements.
