On-Bright Electronics OB2281A
OB2281A is a highly integrated current mode ■ Power on soft start reducing MOSFET Vds PWM control IC optimized for high performance, stress low standby power and cost effective offline ■ Frequency shuffling for EMI flyback converter applications. setting for constant output power limiting OB2281A offers comprehensive protection over universal input voltage range coverage with auto-recovery including Cycle-byCycle current limiting (OCP), over load protection o Over Load Protection (OLP) with autorecovery (OLP), VCC under voltage lockout...GENERAL DESCRIPTION
FEATURES
● Extended burst mode control for improved PWM switching frequency at normal operation is efficiency and low standby power design internally fixed and is trimmed to tight range. At no● Audio noise free operation load or light load condition, the IC operates in
● Over Load operation with increased frequency extended ‘burst mode’ to minimize switching loss.
● Comprehensive protection coverage Lower standby power and higher conversion o VCC Under Voltage Lockout with efficiency is thus achieved. hysteresis (UVLO) VCC low startup current and low operating current o VCC Over Voltage Protection (VCC OVP) contribute to a reliable power on startup and low o Cycle-by-cycle over current threshold standby design with OB2281A. setting for constant output power limiting OB2281A offers comprehensive protection over universal input voltage range coverage with auto-recovery including Cycle-byCycle current limiting (OCP), over load protection o Over Load Protection (OLP) w...