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.
SCM1212A has geminate power MOS, and it can work normally at a low input voltage of 4.5 V and will not be damaged under the impact of a high input voltage of 40 V. The internal power MOS has a high symmetry driving, thereby reducing the degree of bias of the push-pull topology.
 |
| SCM1201A Block Diagram. |
The detailed information for three key technologies at below:
- Soft-start Function.
It avoid 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.
 |
| SCM1201A Simplified Wiring Diagram. |
Product Application
It can be widely used in isolated power supply, industrial process control, isolated communication power, medical equipment, telecommunications equipment and other fields.
 |
| Output Voltage and Efficiency vs Output Current. |
Product Feature
- 4.5~8 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~+125 °C
- Providing matched transformer (recommend TTB05xx-1T series)
