OB3398

DataSheet OB3398​

High Precision Off-line Primary-Side PWM Power Switch

FEATURES

• High Precise Constant Current Regulation at Universal AC input
• Primary-side Sensing and Regulation Without TL431 and Opto-coupler
• Programmable CC Regulation
• Adjustable Constant Current and Output Power Setting
• Built-in Secondary Constant Current Control with Primary Side Feedback
• Built-in Adaptive Current Peak Regulation
• Built-in Primary winding inductance compensation
• Power on Soft-start
• Built-in Leading Edge Blanking (LEB)
• Cycle-by-Cycle Current Limiting
• VDD Under Voltage Lockout with Hysteresis (UVLO)
• VDD OVP
• VDD Clamp

APPLICATIONS

• Low Power AC/DC offline SMPS for
• LED applications

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