Overview
The LM2596S-5.0/NOPB is a SIMPLE SWITCHER® power converter from Texas Instruments, designed as a 150 kHz, 3A step-down (buck) voltage regulator. This monolithic integrated circuit provides all the active functions necessary for a step-down switching regulator, capable of driving a 3A load with excellent line and load regulation. The LM2596 series is available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version.
The device operates at a fixed switching frequency of 150 kHz, allowing the use of smaller filter components compared to lower frequency switching regulators. It is packaged in a 5-pin TO-263 (D2PAK) surface mount package, making it suitable for a variety of applications including appliances, grid infrastructure, EPOS, and home theater systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Topology | Buck (Step Down) | |
| Input Voltage Min | 4.5 | V |
| Input Voltage Max | 40 | V |
| Output Voltage Nom | 5 | V |
| Max Output Current | 3 | A |
| No. of Pins | 5 | |
| IC Case / Package | TO-263 (D2PAK) | |
| IC Mounting | Surface Mount | |
| Switching Frequency Typ | 150 kHz | |
| Operating Temperature Min | -40°C | |
| Operating Temperature Max | 125°C | |
| Efficiency | 80% |
Key Features
- Fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version
- Input voltage range up to 40 V
- 3-A output load current
- Requires only four external components
- Excellent line and load regulation specifications
- 150 kHz fixed-frequency internal oscillator
- TTL shutdown capability
- Low power standby mode, IQ typically 80 µA
- High efficiency
- Uses readily available standard inductors
- Thermal shutdown and current-limit protection
Applications
- Appliances
- Grid infrastructure
- EPOS (Electronic Point of Sale) systems
- Home theater applications
Q & A
- What is the LM2596S-5.0/NOPB?
The LM2596S-5.0/NOPB is a SIMPLE SWITCHER® 150 kHz, 3A step-down (buck) voltage regulator from Texas Instruments.
- What are the available output voltages for the LM2596 series?
The LM2596 series is available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version.
- What is the input voltage range for the LM2596S-5.0/NOPB?
The input voltage range is from 4.5 V to 40 V.
- How many external components are required for the LM2596S-5.0/NOPB?
The regulator requires only four external components.
- What is the switching frequency of the LM2596S-5.0/NOPB?
The switching frequency is 150 kHz.
- What is the maximum output current of the LM2596S-5.0/NOPB?
The maximum output current is 3 A.
- What type of package does the LM2596S-5.0/NOPB come in?
The device is packaged in a 5-pin TO-263 (D2PAK) surface mount package.
- Does the LM2596S-5.0/NOPB have thermal protection features?
Yes, it includes thermal shutdown and current-limit protection.
- What is the efficiency of the LM2596S-5.0/NOPB?
The efficiency is approximately 80%.
- What are some common applications for the LM2596S-5.0/NOPB?
Common applications include appliances, grid infrastructure, EPOS systems, and home theater applications.
