Overview
The LM2596T-ADJ/NOPB is a SIMPLE SWITCHER® power converter regulator from Texas Instruments, designed as a step-down (buck) switching regulator. This device is capable of driving a 3-A load with excellent line and load regulation. It is available in a standard 5-pin TO-220 package and offers fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version. The adjustable version allows for an output voltage range of 1.2 V to 37 V ±4% maximum over line and load conditions.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Input Voltage Range | 4.5 | 40 | V | |
| Output Voltage (Adjustable Version) | 1.2 | 37 | V | |
| Output Load Current | 3 | A | ||
| Switching Frequency | 127 | 150 | 173 | kHz |
| Operating Temperature Range | -40 | 125 | °C | |
| Package Type | TO-220 (NDH), 5 pins | |||
| Thermal Resistance (Junction to Ambient) | 50 | °C/W |
Key Features
- Adjustable output voltage range from 1.2 V to 37 V ±4% maximum over line and load conditions.
- Fixed output voltages of 3.3 V, 5 V, and 12 V available.
- High efficiency with up to 90% efficiency at certain operating conditions.
- Low power standby mode with a typical quiescent current of 80 µA.
- TTL shutdown capability and low power standby mode.
- Thermal shutdown and current-limit protection for self-protection.
- Requires only four external components for operation.
- Uses readily available standard inductors.
- 150 kHz fixed-frequency internal oscillator allowing smaller filter components.
Applications
The LM2596T-ADJ/NOPB is versatile and can be used in a variety of applications, including:
- Power supplies for electronic devices requiring step-down voltage conversion.
- Home theater systems and audio equipment.
- EPOS (Electronic Point of Sale) systems.
- Industrial control systems and automation.
- Consumer electronics and appliances.
Q & A
- What is the input voltage range of the LM2596T-ADJ/NOPB?
The input voltage range is from 4.5 V to 40 V.
- What are the available output voltage options for the LM2596T-ADJ/NOPB?
The device is available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version ranging from 1.2 V to 37 V.
- What is the maximum output load current of the LM2596T-ADJ/NOPB?
The maximum output load current is 3 A.
- What is the switching frequency of the LM2596T-ADJ/NOPB?
The switching frequency is 150 kHz.
- What is the operating temperature range of the LM2596T-ADJ/NOPB?
The operating temperature range is from -40°C to 125°C.
- What kind of package is the LM2596T-ADJ/NOPB available in?
The device is available in a 5-pin TO-220 (NDH) package.
- Does the LM2596T-ADJ/NOPB have built-in protection features?
Yes, it includes thermal shutdown and current-limit protection.
- How many external components are required to operate the LM2596T-ADJ/NOPB?
Only four external components are required.
- What is the typical quiescent current in standby mode?
The typical quiescent current in standby mode is 80 µA.
- Can the LM2596T-ADJ/NOPB be used with standard inductors?
Yes, it uses readily available standard inductors.
