Overview
The LM2587S-ADJ/NOPB is a versatile DC-DC converter IC produced by Texas Instruments. This monolithic integrated circuit is designed for various switching regulator applications, including flyback, step-up (boost), and forward converters. The device is known for its wide input voltage range of 4V to 40V and its ability to deliver up to 5A of output current. It is available in several output voltage versions, including fixed voltages (3.3V, 5V, 12V) and an adjustable version. The LM2587S-ADJ/NOPB is packaged in a TO-263 (D2Pak) package, making it suitable for a variety of power supply designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4V to 40V | V |
| Output Current | Up to 5A | A |
| Output Voltage Range | 1.23V to 60V (adjustable) | V |
| Switch Voltage | Up to 65V | V |
| Switching Frequency | 100 kHz | Hz |
| Package Type | TO-263 (D2Pak) | - |
| Thermal Shutdown | Yes | - |
| Current Limiting | Yes | - |
| Undervoltage Lockout | Yes | - |
| Soft-Start Function | Yes | - |
Key Features
- Requires few external components, making it cost-effective and simple to use.
- Wide input voltage range: 4V to 40V.
- High output current capability: up to 5A.
- Current-mode operation for improved transient response, line regulation, and current limiting.
- Fixed 100 kHz switching frequency.
- Internal soft-start function to reduce in-rush current during start-up.
- Output transistor protected by current limit, undervoltage lockout, and thermal shutdown.
- System output voltage tolerance of ±4% over line and load conditions.
Applications
- Flyback regulators.
- Multiple-output regulators.
- Simple boost regulators.
- Forward converters.
Q & A
- What is the input voltage range of the LM2587S-ADJ/NOPB?
The input voltage range is from 4V to 40V.
- What is the maximum output current of the LM2587S-ADJ/NOPB?
The maximum output current is up to 5A.
- What are the available output voltage options for the LM2587S-ADJ/NOPB?
The output voltage can be fixed at 3.3V, 5V, or 12V, or it can be adjustable from 1.23V to 60V.
- What is the switching frequency of the LM2587S-ADJ/NOPB?
The switching frequency is fixed at 100 kHz.
- Does the LM2587S-ADJ/NOPB have built-in protection features?
Yes, it includes current limiting, undervoltage lockout, and thermal shutdown.
- What package type is the LM2587S-ADJ/NOPB available in?
The device is packaged in a TO-263 (D2Pak) package.
- Does the LM2587S-ADJ/NOPB have a soft-start function?
Yes, it includes an internal soft-start function to reduce in-rush current during start-up.
- What is the output voltage tolerance of the LM2587S-ADJ/NOPB?
The system output voltage tolerance is ±4% over line and load conditions.
- Can the LM2587S-ADJ/NOPB be used in multiple configurations?
Yes, it can be used as a flyback regulator, multiple-output regulator, simple boost regulator, and forward converter.
- Is the LM2587S-ADJ/NOPB RoHS compliant?
Yes, the LM2587S-ADJ/NOPB is RoHS compliant.
