The LM2586 regulator is a monolithic integrated circuit specifically designed for flyback, step-up (boost), and forward converter applications. The device is available in 4 different output voltage versions: 3.3V, 5.0V, 12V, and adjustable. Requiring a minimum number of external components, these regulators are cost-effective, and simple to use. Included in the datasheet are typical circuits of boost and flyback regulators.
The power switch is a 3.0A NPN device that can stand off 65V. Protecting the power switch are current and thermal limiting circuits and an under-voltage lockout circuit. This IC contains an adjustable frequency oscillator that can be programmed up to 200 kHz. The oscillator can also be synchronized with other devices so that multiple devices can operate at the same switching frequency.
LM2586 Pinout
LM2586 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | FREQ: ADJ.-ON’/OFF | Frequency Adjust-Complement On/Off Pin |
| 2 | COMP: | Compensation Pin |
| 3 | FB | FeedBack Pin |
| 4 | GND | Ground Pin |
| 5 | SW | Switch Pin |
| 6 | FREQ: SYNC | Frequency Synchrounus Pin |
| 7 | Vin | Input Voltage |
LM2586 Key Features
- Adjustable switching frequency: 100 kHz to 200 kHz
- External shutdown capability
- Draws less than 60 µA when shut down
- Frequency synchronization
- Current-mode operation for improved transient response, line regulation, and current limit
- Internal soft-start function reduces in-rush current during start-up
- Output transistor protected by current limit, under voltage lockout, and thermal shutdown
- System output voltage tolerance of ±4% max over line and load conditions
Application
- Flyback regulator
- Forward converter
- Multiple-output regulator
- Simple boost regulator
You can download this datasheet for LM2586 Adjustable 3A Flyback Voltage Regulator – Datasheet from the link given below:
