ACTIVE
SSC1S311A
Package：SOIC8
SSC1S311A is the controller IC of a quasi-resonant mode for a switching power supplies. The IC incorporates a startup circuit and a standby function to reduce a power consumption and standby power. In normal operation, the quasi-resonant mode operation achieves high efficiency and low noise. In addition, in medium to low load conditions, the operation mode is automatically changed from the quasi-resonant mode to the bottom-skip mode to improve efficiency. The IC is provided in the SOIC8 package. The power supply that is a low component counts and a high performance-to-cost can be achieved by the rich set of protection features.
Features
-
● Multi-Mode Control
● Automatic Standby Function
● Input Power at No Load:
<30mW at 100VAC
<50mW at 230VAC
● Bottom-Skip Function
● Step-on Burst Oscillation Function
● Bias Assist Function
● Soft-Start Function
● Adjustable Startup Voltage
● Maximum On-time Limitation Function
● VCC Operational Range Expanded
● Leading Edge Blanking (LEB) Function
● Protection Functions
Overcurrent Protection (OCP): Pulse-by-pulse
Overvoltage Protection (OVP): Auto-restart
Overload Protection (OLP): Auto-restart
Thermal Shutdown (TSD): Auto-restart
Application
-
● Digital Appliance
● Office Automation (OA) Equipment
● White Goods
● Industrial Apparatus
● Communication Facilities
Specifications
| Control Method | Quasi-Resonant |
|---|---|
| Type | Controller |
| Output Current | W |
| RDS(ON) (max.) | Ω |
| VDSS (min.) | V |
| VCC (max.) | 35 V |
| Oscillating Frequency(typ.) | ― kHz |
| OCP | YES |
| OLP | Auto Restart |
| OVP | Auto Restart |
| Brown-in / out | NO |
| TSD | Auto Restart |
| Power Consumption at No Load | |
| Package Weight (Typ.) | 0.077 g |
Typical Application
Block Diagram
Pin Configuration Definitions
Selection Guide
SSC1S310A Series| Part Number | Protection Operation (OVP, OLP, TSD) |
|---|---|
| SSC1S311A | Auto-restart |
| SSC1S312A | Latched Shutdown |
Questions or Comments?
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