Current Mode PWM Controller 6-Pin SOT-26 T/R

This highly integrated PWM controller provides several enhancements designed to meet the low standby-power needs of low-power SMPS. To minimize standby power consumption, a 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 meet even strict power conservation requirements. The BiCMOS fabrication process enables reducing the startup current to 9µA and the operating current to 3mA. To further improve power conservation, a large startup resistance can be used. Built-in synchronized slope compensation ensures the stability of peak current mode control. Proprietary internal compensation provides a constant output power limit over a universal AC input range (90VAC to 264VAC). Pulse-by-pulse current limiting ensures safe operation even during short-circuits. To protect the external power MOSFET from being damaged by supply over voltage, the SG6860’s output driver is clamped at 17V. SG6860 controllers can improve the performance and reduce the production cost of power supplies. The SG6860 can replace linear and RCC-mode power adapters. It is available in 6-pin SOT-26 package.

• Green-Mode PWM
• Supports the “Blue Angel” Eco Standard
• Low Startup Current: 9µA
• 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 (Latch off)
• Gate Output Voltage Clamped at 17V Low Cost
• Few External Components Required
• Small SOT-26 Package