SG6846A Datasheet (Fairchild Semiconductor) - Highly Integrated Green-Mode PWM Controller

SG6846A, Highly Integrated Green-Mode PWM Controller

The SG6846A is especially designed for SMPS with surge-current output, incorporated with a two-level OCP function.

Besides the cycle-by-cycle current limiting, if the switching current is higher than two thirds the peakcurrent threshold for 1700ms, over-current protection is activated such that the

SG6846A Features

* Low Startup Current: 8µA

* Low Operating Current: 3.7mA

* Peak-Current Mode of Operation with Cycle-by- Cycle Current Limiting

* PWM Frequency Continuously Decreasing with Burst Mode at Light Loads

* VDD Over-Voltage Protection (OVP)

* AC Input Brownout Protection with Hyst