UC3863A Overview
The UC3863A 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.
UC3863A 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
- OLP with automatic recovery
- OTP and OVP with automatic recovery
- VDD clamp for higher security
- Programmable PWM Frequency
- Gate output voltage clamped at 16V
- Low start-up current
UC3863A 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
- OLP with automatic recovery
- OTP and OVP with automatic recovery
- VDD clamp for higher security
