Silergy Technology SY22817ABC
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $94,999.99 | $94,999.99 |
| 15+ | $91,999.99 | $1,379,999.85 |
| 25+ | $89,999.99 | $2,249,999.75 |
| 50+ | $84,999.99 | $4,249,999.50 |
| 100+ | $74,999.99 | $7,499,999.00 |
| N+ | $15,000.00 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Silergy Technology |
| Product Series | |
| Packaging | Strip | |
| Output Isolation | Either |
| Internal Switch(s) | No |
| Voltage - Breakdown | - |
| Topology | Flyback |
| Voltage - Start Up | - |
| Voltage - Supply (Vcc/Vdd) | 9.25V ~ 20V |
| Duty Cycle | - |
| Frequency - Switching | 125kHz |
| Power (Watts) | - |
| Fault Protection | Current Limiting, Over Voltage, UVLO |
| Control Features | - |
| Operating Temperature | -40°C ~ 105°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | SOT-23-6 |
| Supplier Device Package | - |
| ROHS |
The Silergy SY22817ABC is a PSR quasi-resonant flyback controller that drives an external switch for isolated AC-DC conversion. It operates at 125kHz from a 9.25V to 20V Vcc supply and includes Current Limiting, Over Voltage, and UVLO protection. Supplied in a SOT-23-6 package, it is rated for -40°C to 105°C ambient temperatures.
- PSR quasi-resonant flyback control reduces secondary-side sensing components.
- External-switch architecture offers design flexibility for varied power levels.
- 125kHz switching frequency supports compact flyback designs.
- Current Limiting, Over Voltage, and UVLO protection enhance reliability.
- Compact SOT-23-6 package suits space-constrained layouts.
PSR Quasi-Resonant Flyback Adapters
As a primary-side regulation quasi-resonant flyback controller driving an external switch, the SY22817ABC simplifies isolated adapter designs by reducing secondary-side sensing components.
Compact Chargers
The 125kHz switching frequency and SOT-23-6 package enable compact flyback charger designs with a 9.25V to 20V Vcc supply.
Consumer Power Supplies
Current Limiting, Over Voltage, and UVLO protection safeguard the converter across a -40°C to 105°C ambient range.
Bias and Auxiliary Supplies
The small SOT-23-6 footprint and external-switch flexibility suit space-constrained isolated bias supply designs.
- Q: What topology does the SY22817ABC use?
- A: It is a PSR quasi-resonant flyback controller.
- Q: Does it have an integrated switch?
- A: No, it drives an external switch.
- Q: What is the Vcc supply range?
- A: 9.25V to 20V.
- Q: What switching frequency does it use?
- A: 125kHz.
- Q: What protections are included?
- A: Current Limiting, Over Voltage, and UVLO.
- Q: What topology does the SY22817ABC use?
- A: It is a PSR quasi-resonant flyback controller.
- Q: Does it have an integrated switch?
- A: No, it drives an external switch.
- Q: What is the Vcc supply range?
- A: 9.25V to 20V.
- Q: What switching frequency does it use?
- A: 125kHz.
- Q: What protections are included?
- A: Current Limiting, Over Voltage, and UVLO.

SY22817ABC.pdf