KP3111
High Precision 5V Default Output
Integrated with 500V MOSFET and High Voltage Startup Circuit
Ultra Low System BOM Cost
Support Buck and Buck/Boost Topology
On/OFF Peak Current Mode Control
Less than 50mW Standby Power
Built-in 31kHz Oscillator with Frequency Shuffling
Built-in Soft Start
Very Low VDD Operation Current
Build in Protections:
Over Load Protection (OLP)
On-Chip Thermal Shutdown (OTP)
Cycle-by-Cycle Current Limiting (OCP)
Leading Edge Blanking (LEB)
VDD UVLO
SOP-8, TO-92 and SOT23-3 Package Available
KP3111 is a low cost, highly integrated PWM power switch for non-isolated buck and buck-boost applications.
KP3111 combines a 500V power MOSFET with the ON/OFF PWM controller in one chip. The IC can achieve high precision 5V default Output at universal AC input. In KP3111, PWM switching frequency with shuffling is fixed to 31kHz. The IC has built-in green mode control for light and zero loadings, which can achieve less than 50mW standby power.
KP3111 integrates functions and protections of Under Voltage Lockout (UVLO), Cycle-by-cycle Current Limiting (OCP), On-chip Thermal Shutdown (OTP), Over Load Protection (OLP) Short Load Protection (SLP), etc.
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