The SSC620S/SSC620D is a current-mode PWM power supply IC controller from Sanken. The document states that the IC uses secondary current detection for constant current control, a BCD process, low power consumption and few external components. It operates in PWM mode during normal operation and switches automatically to burst mode at light load; a startup circuit is included.
The document covers features, the SSC620S/SSC620D lineup, DIP-8 and SOP-8 package outlines and pin arrangements, the internal block diagram, terminal functions, electrical characteristics, an application circuit example and design calculation notes. It lists protection functions including OCP, OLP, OVP and TSD. This manual is written in Chinese.
| Package options | DIP-8 and SOP-8 |
|---|---|
| Average oscillation frequency | 90 to 110 kHz (100 kHz typ.) |
| Maximum ON duty | 70 to 82% (76% typ.) |
| OCP threshold | 0.71 to 0.85 V (0.78 V typ.) |
| OLP delay time | 0.84 to 1.56 sec (1.2 sec typ.) |
| OVP operating supply voltage | 28.8 to 35.2 V (32 V typ.) |
| Thermal shutdown temperature | 125°C min. |
It is a current-mode PWM power supply IC controller.
The device is offered in DIP-8 and SOP-8 packages.
The listed protections are OCP, OLP, OVP and TSD.