产品目录 PRODUCT
产品详情
简单介绍:
上海图一SG6842為 高整合度、高功能PWM控制IC,SG6842應用於一般AD/DC 交換式電源供應器,SG6842符合系統設計工程師對於省電之要求,及降低產品設計成本之考量。SG6842系列產品採用崇貿的非導通時間調變(Off Time Modulation)專利,在輕載及空載時,SG6842其PWM頻率會隨著負載減輕而降低其頻率,並配合專利Burst Mode控制,將待機耗能降至*低程度。
详情介绍:
FEATURES
Linearly decreasing PWM frequency
Burst-mode at light load and zero load
Low start-up current (20uA)
Low operating current (4mA)
Internal latch circuit for OTP, OVP
Leading-edge blanking
Built-in synchronized slope compensation
Totem pole output with soft driving
Improved EMI
Constant power limit over a universal AC input
range
Current mode operation
Cycle-by-cycle current limiting
Under Voltage Lockout (UVLO)
Programmable PWM frequency
GATE output maximum voltage clamped at 18V
VDD Over Voltage Protection (OVP)
Programmable Over Temperature Protection (OTP)
Very few external components are required