Packaging information
| Package | Pins VSSOP (DGK) | 8 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 1,000 | SMALL T&R |
Features for the LM5023
- Critical Conduction Mode
- Peak-Current Mode Control
- Skip-Cycle Mode for Low-Standby Power
- Hiccup Mode for Continuous Overload Protection
- Cycle-by-Cycle Overcurrent Protection Maintains
Accuracy Over the Universal AC Line - Line-Voltage Feedforward
- OVP Protection by Sensing the Auxiliary Winding
- Integrated 0.7-A Peak Gate Driver
- Direct Opto-Coupler Interface
- Leading Edge Blanking of Current Sense Signal
- Maximum Frequency Clamp 130 kHz
- Programmable Soft-Start
- Thermal Shutdown
- 8-Pin VSSOP Package
Description for the LM5023
The LM5023 is a quasi-resonant pulse width modulated (PWM) controller which contains all of the features needed to implement a highly efficient off-line power supply. The LM5023 uses the transformer auxiliary winding for demagnetization detection to ensure critical conduction mode (CrCM) operation. The LM5023 features a hiccup mode for overcurrent protection with an auto restart to reduce the stress on the power components during an overload. A skip-cycle mode reduces power consumption at light loads for energy conservation applications (ENERGY STAR®, CEPCP, and so forth). The LM5023 also uses the transformer auxiliary winding for output overvoltage protection (OVP); if an OVP fault is detected the LM5023 latches off the controller.