UC3863 Overview
The UC3863 is a high performance current mode PWM controller ideally suited for low standby power. The PWM switching frequency is programmable externally at normal operation. Low VDD startup current make the power reliable on startup design and a large value resistor could be used in the startup circuit to minimize the standby power.
UC3863 Key Features
- UTC proprietary frequency hopping technology for Improved EMI performance
- Power-saving mode for high light-load and standby efficiency
- Dynamic peak current limiting for constant output power
- Built-in synchronized slope pensation
- OTP,OLP,OVP and VDD clamp for higher security
- Programmable PWM Frequency
- Gate output voltage clamped at 15V
- Low start-up current
- Cycle-by-cycle Current Limiting
- Under voltage lockout (UVLO)
UC3863 Applications
- UTC proprietary frequency hopping technology for Improved EMI performance
- Power-saving mode for high light-load and standby efficiency
- Dynamic peak current limiting for constant output power
- Built-in synchronized slope pensation
- OTP,OLP,OVP and VDD clamp for higher security
