The LM5021MM-1/NOPB is an off-line Pulse Width Modulation (PWM) Controller contains all of the features needed to implement highly efficient off-line single-ended flyback and forward power converters using current-mode control. It features include an ultra-low (25μA) start-up current, which minimizes power losses in the high voltage start-up network. A skip cycle mode reduces power consumption with light loads for energy conserving applications (ENERGY STAR?, CECP and so forth). Additional features include under-voltage lockout, cycle-by-cycle current limit, hiccup mode overload protection, slope compensation, soft-start and oscillator synchronization capability. This high performance 8-pin IC has total propagation delays less than 100ns and a 1MHz capable oscillator that is programmed with a single resistor.
- Current mode control
- Skip cycle mode for low standby power
- Single resistor programmable oscillator
- Synchronizable oscillator
- Adjustable soft-start
- Direct opto-coupler interface
- Under voltage lockout (UVLO) with hysteresis
- Cycle-by-cycle over-current protection
- Hiccup mode for continuous overload protection
- Leading edge blanking of current sense signal
- Green product and no Sb/Br
工业, 电源管理, 音频, 计量, 自动化与过程控制, 通信与网络
(EN)
