DESCRIPTION
●This highly integrated PWM controller provides several special enhancements designed to meet the low standby-power needs of low-power SMPS. To minimize standby power consumption, the proprietary green-mode function provides off-time modulation to linearly decrease the switching frequency under light-load conditions. This green-mode function enables the power supply to easily meet even the strictest power conservation requirements.
●FEATURES
●■ Green-Mode PWM
●■ Supports the “Blue Angel” Standard
●■ Low Start-up Current (9uA)
●■ Low Operating Current (3mA)
●■ Leading-Edge Blanking
●■ Constant Output Power Limit
●■ Universal Input
●■ Built-in Synchronized Slope Compensation
●■ Current Mode Operation
●■ Cycle-by-cycle Current Limiting
●■ Under Voltage Lockout (UVLO)
●■ Programmable PWM Frequency with Frequency Hopping
●■ VDD Over Voltage Protection (Auto Restart)
●■ Gate Output Voltage Clamped at 17V
●■ Low Cost
●■ Few External Components Required
●■ Small SOT-26 and Dip 8 Packages
●APPLICATIONS
●General-purpose switching mode power supplies and flyback power converters, such as
●■ Battery chargers for cellular phones, cordless phones, PDAs, digital cameras, and power tools
●■ Power adapters for ink jet printers, video game consoles, and portable audio players
●■ Open-frame SMPS for TV/DVD standby and other auxiliary supplies, home appliances, and consumer electronics
●■ Replacements for linear transformers and RCC SMPS
●■ PC 5V standby power.
