


Note: The purchased components are stored in your JLCPCB parts library for future PCBA orders only, and cannot be shipped separately.
| Attributes | Value | |
|---|---|---|
| Category | Power Management (PMIC)/AC-DC Controllers and Regulators | |
| Manufacturer | POWER INTEGRATIONS | |
| Package | TO-220-7C | |
| Operating Temperature | -40℃~+150℃ | |
| Frequency - Switching | 66kHz~132kHz | |
| Duty Cycle(Max) | 66.5% | |
| Feedback System | Primary-side feedback | |
| Working Mode | PWM Modulation | |
| Isolation | Isolation | |
| Features | Over Voltage Protection、Under Voltage Protection、Overtemperature protection (OTP)、Brown-in/Brown-out detection、Adjustable soft-start、Light load efficient mode、Under-voltage lockout、EMI optimization (spread spectrum)、Leading edge blanking、Adjustable current limiting | |
| Topology | Flyback | |
| Voltage - Breakdown | 700V |

* Images are for reference only
Note: The purchased components are stored in your JLCPCB parts library for future PCBA orders only, and cannot be shipped separately.

* Images are for reference only
Note: The purchased components are stored in your JLCPCB parts library for future PCBA orders only, and cannot be shipped separately.
TOP243YN technical specifications, attributes, and parameters.
| Attributes | Value | |
|---|---|---|
| Category | Power Management (PMIC)/AC-DC Controllers and Regulators | |
| Manufacturer | POWER INTEGRATIONS | |
| Package | TO-220-7C | |
| Operating Temperature | -40℃~+150℃ | |
| Frequency - Switching | 66kHz~132kHz | |
| Duty Cycle(Max) | 66.5% | |
| Feedback System | Primary-side feedback | |
| Working Mode | PWM Modulation | |
| Isolation | Isolation | |
| Features | Over Voltage Protection、Under Voltage Protection、Overtemperature protection (OTP)、Brown-in/Brown-out detection、Adjustable soft-start、Light load efficient mode、Under-voltage lockout、EMI optimization (spread spectrum)、Leading edge blanking、Adjustable current limiting | |
| Topology | Flyback | |
| Voltage - Breakdown | 700V |
From components to fully assembled PCBs. JLCPCB supports PCB assembly for the TOP243YN. Sign up to receive and start your assembly today →
Step 1 - Pre-order the parts you need from JLCPCB.
Step 2 - Place a PCBA order to have those parts assembled onto your boards.
Step 3 - JLCPCB manufactures and assembles your boards in as fast as 3 days.

TOP243YN datasheets or manufacturer documentation.
Datasheet: TOP243YN Datasheet (PDF)
The TOP243YN schematic symbol and PCB footprint are available in the EasyEDA PCB design tool.