Push-Pull Control Chip with Soft-Start and Integrated Protection Features
Mornsun's newest fixed input push-pull control chip SCM1212A integrates soft-start function, output short-circuit protection and over-temperature protection to effectively improve product reliability. SCM1212A (SOT23-5 package) is functionally the same as the SCM1201A (SOT23-6 package) except the package, so the chip meets the market's demand for different pin packages.
This control chip can be widely used in isolated power supplies, industrial process control, isolated communication power, medical equipment, telecommunications equipment and other fields.
SCM1212A has geminate power MOS, and it can work normally at a low input voltage of 4.5V and will not be damaged under the impact of a high input voltage of 40V. The internal power MOS has a high symmetry driving, thereby reducing the degree of bias of the push-pull topology.
The detailed information for three key technologies:
- Soft-start Function. Avoids the damage caused by high current during start up and ensure normal startup with full load under CC load mode.
- Output short-circuit protection. This protection has good consistency, and it is not affected by the parameter deviation during power processing, nor by the high and low temperature test conditions.
- Over-temperature protection. When it exceeds the specified temperature range, the chip automatically enters the sleep state, and it can resume automatically when the temperature drops to the set value again.
Product Features
- 5- to 8-V input voltage range
- Built-in geminate power MOS
- High MOS symmetry driving
- Built-in soft-start
- Output short-circuit protection
- Over-temperature protection
- Operation junction temperature: -40 to +125℃
- Providing matched transformer (recommend TTB05xx-1T series)
