Overview
The LM2585SX-ADJ/NOPB is a monolithic integrated circuit designed by Texas Instruments, specifically tailored for flyback, step-up (boost), and forward converter applications. This regulator is part of the SIMPLE SWITCHER family and is known for its simplicity and cost-effectiveness, requiring a minimal number of external components. It is available in various output voltage versions, including fixed outputs of 3.3 V, 5 V, 12 V, and an adjustable output option.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TO-263 (KTT), 5 pins |
| Operating Temperature Range | -40°C to 125°C |
| Input Voltage Range | 4 V to 40 V |
| Output Current Max | 3 A |
| Output Voltage Max | 12 V (fixed), adjustable |
| Switching Frequency | 100 kHz |
| Output Voltage Tolerance | ±4% over line and load conditions |
| Power Switch | 3-A NPN, 65 V stand-off |
Key Features
- Requires few external components
- Family of standard inductors and transformers available
- NPN output switches 3 A, can stand off 65 V
- Wide input voltage range: 4 V to 40 V
- Current-mode operation for improved transient response, line regulation, and current limit
- 100-kHz switching frequency
- Internal soft-start function reduces in-rush current during start-up
- Output transistor protected by current limit, undervoltage lockout, and thermal shutdown
Applications
The LM2585SX-ADJ/NOPB is suitable for a variety of power conversion applications, including flyback, step-up (boost), and forward converters. It is particularly useful in systems that require a wide input voltage range and high efficiency. Typical applications include power supplies for industrial equipment, consumer electronics, and automotive systems where robust and reliable power conversion is essential.
Q & A
- What is the input voltage range of the LM2585SX-ADJ/NOPB?
The input voltage range is from 4 V to 40 V. - What is the maximum output current of the LM2585SX-ADJ/NOPB?
The maximum output current is 3 A. - What are the available output voltage options for the LM2585SX-ADJ/NOPB?
The available output voltage options include fixed outputs of 3.3 V, 5 V, 12 V, and an adjustable output. - What is the switching frequency of the LM2585SX-ADJ/NOPB?
The switching frequency is 100 kHz. - Does the LM2585SX-ADJ/NOPB have built-in protection features?
Yes, it includes current limit, undervoltage lockout, and thermal shutdown protection. - What is the operating temperature range of the LM2585SX-ADJ/NOPB?
The operating temperature range is from -40°C to 125°C. - What type of package is the LM2585SX-ADJ/NOPB available in?
The LM2585SX-ADJ/NOPB is available in a TO-263 (KTT) package with 5 pins. - Does the LM2585SX-ADJ/NOPB have a soft-start function?
Yes, it has an internal soft-start function to reduce in-rush current during start-up. - What is the output voltage tolerance of the LM2585SX-ADJ/NOPB?
The output voltage tolerance is ±4% over line and load conditions. - Can the LM2585SX-ADJ/NOPB be used in flyback, step-up, and forward converter applications?
Yes, it is designed for these types of applications.
