Overview
The LM2587S-3.3 is a switching regulator IC produced by Texas Instruments, designed for applications requiring efficient voltage conversion. This model is part of the SIMPLE SWITCHER® series, known for its ease of use and robust performance. The LM2587S-3.3 is particularly suited for applications in power management, offering a fixed 3.3V output. Its market positioning targets engineers and designers in industries such as industrial automation, consumer electronics, and automotive systems, where reliable and efficient power conversion is critical. The device stands out for its wide input voltage range, high output current capability, and compact surface-mount packaging.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Series | SIMPLE SWITCHER® | - | - |
| Function | Boost, Buck-Boost | - | - |
| Output Configuration | Positive | - | - |
| Topology | Boost, Flyback, Forward Converter | - | - |
| Output Type | Fixed | - | - |
| Output Number | 1 | - | - |
| Input Voltage (Min) | 4 | V | - |
| Input Voltage (Max) | 40 | V | - |
| Output Voltage (Min/Fixed) | 3.3 | V | - |
| Output Current | 5 | A (Switch) | - |
| Switching Frequency | 100 | kHz | - |
| Synchronous Rectifier | No | - | - |
| Operating Temperature | -40 to 125 | °C (TJ) | - |
| Mounting Type | Surface Mount | - | - |
| Package/Case | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | - | - |
Key Features
- Wide input voltage range (4V to 40V) for versatile applications.
- Fixed 3.3V output with high current capability (5A switch).
- Integrated 100kHz oscillator for compact magnetic component design.
- Current-mode control for improved transient response and line regulation.
- Internal soft-start function to reduce inrush current during startup.
- Protection features include current limiting, thermal shutdown, and undervoltage lockout.
Applications
The LM2587S-3.3 is widely used in power management systems across various industries. In industrial automation, it is employed in motor control and power supply units. In consumer electronics, it is utilized in battery-powered devices and portable equipment. Automotive applications include power converters for infotainment systems and advanced driver-assistance systems (ADAS). Its robust design and high efficiency make it suitable for applications requiring reliable voltage regulation in challenging environments.
Q & A
1. What is the output voltage of the LM2587S-3.3?
The LM2587S-3.3 provides a fixed output voltage of 3.3V.
2. What is the maximum input voltage supported by this device?
The maximum input voltage is 40V.
3. What is the output current capability of the LM2587S-3.3?
The device supports a switch current of up to 5A.
4. Does the LM2587S-3.3 include thermal protection?
Yes, it features thermal shutdown protection.
5. What is the switching frequency of this regulator?
The switching frequency is 100kHz.
6. Is the LM2587S-3.3 suitable for automotive applications?
Yes, it is commonly used in automotive power systems.
7. Does this device require external components for operation?
It requires minimal external components, making it cost-effective and easy to use.
8. What is the operating temperature range of the LM2587S-3.3?
It operates from -40°C to 125°C.
9. What package type is the LM2587S-3.3 available in?
It is available in a TO-263-6, D²Pak (5 Leads + Tab), TO-263BA package.
10. Can the LM2587S-3.3 be used in battery-powered devices?
Yes, its wide input voltage range and efficiency make it ideal for battery-powered applications.
