Overview
The LM2596SX-3.3/NOPB is a monolithic integrated circuit designed as a step-down (buck) switching regulator. It is part of the LM2596 series from Texas Instruments (originally developed by National Semiconductor). This regulator is capable of driving a 3-A load with excellent line and load regulation. It is available in fixed output voltages, including 3.3 V, and is known for its simplicity and high efficiency.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Input Voltage Range | 4.5 V | 40 V | V | |
| Output Voltage | 3.168 V | 3.3 V | 3.432 V | V |
| Output Load Current | 3 A | A | ||
| Oscillator Frequency | 127 kHz | 150 kHz | 173 kHz | kHz |
| Operating Temperature Range | -40°C | 125°C | °C | |
| Package Type | TO-263 (KTT) | |||
| Number of Pins | 5 | |||
| Efficiency | 73% | 90% | % |
Key Features
- Available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version.
- Adjustable version output voltage range: 1.2 V to 37 V ±4% maximum over line and load conditions.
- 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
The LM2596SX-3.3/NOPB is suitable for a variety of applications, including:
- Power supplies for electronic devices.
- Industrial control systems.
- Home theater systems.
- EPOS (Electronic Point of Sale) systems.
- Any application requiring a high-efficiency step-down DC-DC converter.
Q & A
- What is the input voltage range of the LM2596SX-3.3/NOPB?
The input voltage range is from 4.5 V to 40 V.
- What is the maximum output current of the LM2596SX-3.3/NOPB?
The maximum output current is 3 A.
- What is the typical oscillator frequency of the LM2596SX-3.3/NOPB?
The typical oscillator frequency is 150 kHz.
- What is the operating temperature range of the LM2596SX-3.3/NOPB?
The operating temperature range is from -40°C to 125°C.
- What package type is the LM2596SX-3.3/NOPB available in?
The LM2596SX-3.3/NOPB is available in a TO-263 (KTT) package.
- How many external components are required for the LM2596SX-3.3/NOPB?
Only four external components are required.
- Does the LM2596SX-3.3/NOPB have thermal shutdown protection?
- What is the typical standby current of the LM2596SX-3.3/NOPB in low power mode?
The typical standby current is 80 µA.
- Can the LM2596SX-3.3/NOPB be used in high-efficiency applications?
- Are standard inductors available for use with the LM2596SX-3.3/NOPB?
