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UC1108 Datasheet Low-power Off-line Primary Side Regulation Controller

Manufacturer: Unisonic Technologies

Overview: UNISONIC TECHNOLOGIES CO., LTD UC1108 Preliminary LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER.

General Description

The UTC UC1108 is a primary control unit for switch mode charger and adapter applications.

The controlled variable is transferred by an auxiliary winding from the secondary to the primary side.

The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies.

Key Features

  • S.
  • 30mW No-load Input Power.
  • Primary side control for eliminating opto-coupler and secondary CV/CC control circuitry.
  • Proprietary CC tightening technique to achieve vertical CC profile.
  • Programmable output cable voltage drop compensation.
  • Compensation for external component temperature variations.
  • Random frequency adjustment to reduce system EMI.
  • Flyback topology in DCM operation.
  • Built-in soft start.
  • Over voltage protection.
  • Short circuit prote.

UC1108 Distributor & Price

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More Datasheets from Unisonic Technologies

Part Number Description
UC1100 LOW-POWER HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR
UC1103 HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR