Overview
The LM2596SX-5.0 is a monolithic integrated circuit designed by Texas Instruments (formerly National Semiconductor) for use as a step-down (buck) switching regulator. This device is part of the LM2596 series, which provides all the active functions necessary for a high-efficiency switching regulator. It is capable of driving a 3-A load with excellent line and load regulation. The LM2596SX-5.0 is specifically configured to provide a fixed output voltage of 5 V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 5 V | V |
| Input Voltage Range | 4.5 V to 40 V | V |
| Output Current | Up to 3 A | A |
| Switching Frequency | 150 kHz | kHz |
| Output Voltage Tolerance | ±4% over line and load conditions | % |
| Oscillator Frequency Tolerance | ±15% | % |
| Standby Current | Typically 80 μA | μA |
| Package Type | TO-263 (5-pin) | |
| Operating Temperature Range | -40°C to 125°C | °C |
Key Features
- High efficiency step-down switching regulator
- Fixed output voltage of 5 V, with other versions available at 3.3 V, 12 V, and adjustable output
- Input voltage range up to 40 V
- Output current up to 3 A
- 150 kHz fixed-frequency internal oscillator
- Requires only four external components for operation
- Excellent line and load regulation specifications
- TTL shutdown capability with typically 80 μA standby current
- Thermal shutdown and current-limit protection
- Uses readily available standard inductors
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 output voltage of the LM2596SX-5.0?
The output voltage of the LM2596SX-5.0 is fixed at 5 V.
- What is the input voltage range for the LM2596SX-5.0?
The input voltage range for the LM2596SX-5.0 is from 4.5 V to 40 V.
- How much output current can the LM2596SX-5.0 handle?
The LM2596SX-5.0 can handle up to 3 A of output current.
- What is the switching frequency of the LM2596SX-5.0?
The switching frequency of the LM2596SX-5.0 is 150 kHz.
- What kind of protection features does the LM2596SX-5.0 have?
The LM2596SX-5.0 includes thermal shutdown, current-limit protection, and a two-stage frequency reducing current limit for the output switch.
- How many external components are required to use the LM2596SX-5.0?
The LM2596SX-5.0 requires only four external components for operation.
- What is the standby current of the LM2596SX-5.0?
The standby current of the LM2596SX-5.0 is typically 80 μA.
- What package types are available for the LM2596SX-5.0?
The LM2596SX-5.0 is available in a TO-263 (5-pin) package.
- What is the operating temperature range for the LM2596SX-5.0?
The operating temperature range for the LM2596SX-5.0 is from -40°C to 125°C.
- Can I use the LM2596SX-5.0 in safety-critical applications?
No, the LM2596SX-5.0 should not be used in safety-critical applications without proper evaluation and validation.
