UC3873B Description
The UC3873B is a high performance current mode PWM controller ideally suited for low standby power. Low VDD startup current make the power reliable on startup design and a large 54 6 23 1 SOT-26 value resistor could be used in the startup circuit to minimize the standby power. At no load condition, the IC operates in power-saving mode for lower standby power, decreasing frequency for Higher conversion efficiency at...
UC3873B Key Features
- UTC proprietary frequency hopping technology for Improved EMI performance
- Power-saving mode for high light-load and standby efficiency
- Soft Start
- Dynamic peak current limiting for constant output power
- Built-in synchronized slope pensation
- OLP,OVP and VDD clamp for higher security
- 500/+500mA gate driver
- Programming OTP for higher security
- Fixed switch frequency 100kHz
- Gate output voltage clamped at 15V
UC3873B Applications
- UTC proprietary frequency hopping technology for Improved EMI performance
- Power-saving mode for high light-load and standby efficiency