Green mode Quasi-resonant ICs
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Status:Available
FA5571 is a quasi-resonant switching power supply control IC with excellent standby characteristics. Despite its compact 8-pin package, it has a wide variety of functions and reduces the number of external components, thereby enabling the configuration of space-saving and cost-effective power supplies.
Features
- Quasi-resonant switching power supply
- Power supply with excellent standby characteristics
- Incorporates a startup circuit to achieve low power consumption
- Low current consumption of 1.35 mA during operation
- Built-in maximum frequency limiting function: 120 kHz
- Light-load operation: Built-in burst function
- Built-in drive circuit that can directly connect power MOSFETs
- Output current: 0.5 A (sink) / 0.25 A (source)
- Built-in overload protection: Spring return
- Built-in latch protection with secondary overvoltage detection
- Built-in transformer short-circuit protection
- Built-in low-voltage malfunction prevention circuit (18 V ON/8 V OFF)
- Package: SOP-8
Applications
- Switching Power Supplies
Specifications
| Controller type | QR |
|---|---|
| Applied circuit Detail | Flyback |
| Frequency (kHz) | Selfoscillation (Max.120kHz) |
| VCC(V) | 10 to 28 |
| Built-in start up circuit (V) | 500 |
| Over load protection | Auto-Recovery |
| Over voltage protection | Latch (ZCD) |
| Package | SOP-8 |
Documentation Tools
| Datasheet | FA5571N |
|---|---|
| Selection Guide | Power Supply Control IC Selection Guide |
