Overview
The LM2586SX-ADJ/NOPB is a versatile and highly integrated switching regulator from Texas Instruments, designed for various power conversion applications. This monolithic integrated circuit is part of the SIMPLE SWITCHER family and is specifically tailored for flyback, step-up (boost), and forward converter configurations. The device is available in several output voltage versions, including 3.3V, 5V, 12V, and an adjustable output. It requires a minimal number of external components, making it cost-effective and easy to implement.
Key Specifications
| Parameter | Typical | Minimum | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range | - | 4 | 40 | V |
| Output Switch Voltage | - | 0 | 60 | V |
| Output Switch Current | - | - | 3 | A |
| Junction Temperature Range | - | -40 | 125 | °C |
| Switching Frequency Range | - | 100 kHz | 200 kHz | - |
| Output Voltage Tolerance | - | - | ±4% | - |
| Shutdown Current | - | - | 60 μA | - |
| Package Types | - | - | TO-220, DDPAK/TO-263 | - |
Key Features
- Requires few external components, making it cost-effective and simple to use.
- NPN output switches with a current rating of 3A and a voltage standoff of 65V.
- Wide input voltage range from 4V to 40V.
- Adjustable switching frequency from 100 kHz to 200 kHz, with frequency synchronization capability.
- External shutdown capability with a shutdown current of less than 60 μA.
- Internal soft-start function to reduce in-rush current during startup.
- Current-mode operation for improved transient response, line regulation, and cycle-by-cycle current limiting.
- Output transistor protected by current limit, undervoltage lockout, and thermal shutdown.
- System output voltage tolerance of ±4% maximum over line and load conditions.
Applications
- Flyback regulators.
- Forward converters.
- Multiple-output regulators.
- Simple boost regulators.
Q & A
- What is the input voltage range of the LM2586SX-ADJ/NOPB?
The input voltage range is from 4V to 40V.
- What is the maximum output switch current of the LM2586SX-ADJ/NOPB?
The maximum output switch current is 3A.
- What are the available output voltage versions for the LM2586SX-ADJ/NOPB?
The device is available in 3.3V, 5V, 12V, and adjustable output voltage versions.
- Does the LM2586SX-ADJ/NOPB have an internal soft-start function?
- Can the switching frequency of the LM2586SX-ADJ/NOPB be adjusted?
- What is the shutdown current of the LM2586SX-ADJ/NOPB?
The shutdown current is less than 60 μA.
- What protection features does the LM2586SX-ADJ/NOPB have for the output transistor?
The output transistor is protected by current limit, undervoltage lockout, and thermal shutdown.
- What is the output voltage tolerance of the LM2586SX-ADJ/NOPB?
The system output voltage tolerance is ±4% maximum over line and load conditions.
- Can the LM2586SX-ADJ/NOPB be used in multiple-output regulator configurations?
- What are the typical applications of the LM2586SX-ADJ/NOPB?
Typical applications include flyback regulators, forward converters, multiple-output regulators, and simple boost regulators.
