功能特点

OB2287/OB2288 is a high performance PWM control IC designed for high power AC/DC switch-mode power supply applications. OB2287 is designed for flyback applications while OB2288 is for forward mode with maximum duty cycle of 50%. OB2287/OB2288 is optimized by incorporating performance and protection features to support customer requirements with reduced application complexity, reduced BOM cost and reduced design cycle time.

参数指标

• 1500mA gate drive capability with optimized drive control

• Built in brown out/recovery control to improve system reliability without adding extra cost

• Power on soft start

• Built-in leading edge blanking(LEB) at sense input

• Frequency shuffling for system EMI improvement

• Wide VDD input range with VDD OVP latch and clamp protections.

• Noise immunity design

• Internal selectable latch shutdown to improve system reliability

• Available in DIP8 and SOP8 packages,RoHS compliant

Topology：Forward

Oper. Frequency：External

Max Vdd：28V

Freq. Shuffling：Y

Standby Power：<0.3W

VDD OVP：L

Power on Softstart：Y

OLP/SCP：A

OTP：A/L

Brownout：Y

PFC Control：--

Package：SOP8/DIP8

【Note：L:Latch； A:Auto-recovery】

应用领域

• LCD TV, LCD Monitor

• Power Adapter

• PC Power

• Notebook Adapter