FAN102

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Primary-Side-Regulation PWM Controller

General Description

The primary-side PWM controller significantly simplifies power supply design that requires CV and CC regulation capabilities. The FAN102 controls the output voltage and current precisely with the information in the primary side of the power supply, not only removing the output current sensing loss, but eliminating all secondary feedback circuitry. The green-mode function with a low startup current (10µA) maximizes the light-load efficiency so the power supply can meet stringent standby power regulations. Compared with a conventional secondary-side regulation approach, the FAN102 can reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability.

Product Status/Pricing/Packing

Product Product Status Eco Status *Pricing Package Type Leads Packing Method Package Drawing **Package Marking Convention RoHS IPC1752 RoHS/REACH/JIG Certificate of Compliance
FAN102MY Full Production Green as of Aug 2008 $0.43 SO-8 8 TAPE REEL PDF Line 1:$Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code) &K
Line 2:FAN102
Line 3:MYI
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Features

  • Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary-Feedback Circuitry
  • Green Mode: Frequency Reduction at Light Load
  • Fixed PWM Frequency at 42kHz with Frequency Hopping to Solve EMI Problem
  • Cable Voltage Drop Compensation in CV Mode
  • Low Startup Current: 10µA
  • Low Operating Current: 3.5mA
  • Peak-Current-Mode Control in CV Mode
  • Cycle-by-Cycle Current Limiting
  • VDD Over-Voltage Protection with Auto-Restart
  • VDD Under-Voltage Lockout (UVLO)
  • Gate Output Maximum Voltage Clamped at 18V
  • Fixed Over-temperature Protection with Auto Restart
  • SOP-8 Package Available

Applications

  • TBA

Application Notes

Multilanguage - Chinese Multilanguage - English Multilanguage - Japanese Multilanguage - Korean