FAN100

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Primary-Side-Regulation PWM Controller

General Description

The primary-side PWM controller FAN100 significantly simplifies power supply design that requires CV and CC regulation capabilities. The FAN100 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 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 FAN100 can reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability. FAN100 controller is available in an 8-pin SOP package.

Product Status/Pricing/Packing

Fairchild 1,000 piece Budgetary Pricing. *
If there is no sample button displayed at the top of the page, please contact one of the Fairchild distributors or your local sales office to obtain samples.
Top mark packaging information for product FAN100 is available. **

Product	Product Status	Eco Status	*Pricing	Package Type	Leads	Packing Method	Package Drawing	**Package Marking Convention	RoHS IPC1752	RoHS/REACH/JIG Certificate of Compliance
FAN100MY	Full Production	Green as of Aug 2008	$0.44	SO-8	8	TAPE REEL		Line 1:$Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2:FAN100 Line 3:MYL

Primary Side Regulation

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Qualification Support

Customer qualification data for the FAN100MY

Features

Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary-Feedback Circuitry
Accurate Constant Current Achieved by Fairchild’s Proprietary TRUECURRENT™ Technique
Green Mode: Frequency Reduction at Light Load
Fixed PWM Frequency at 42kHz with Frequency Hopping to Reduce EMI
Low Startup Current: 10µA Maximum
Low Operating Current: 3.5mA
Peak-Current-Mode Control in CV Mode
Cycle-by-Cycle Current Limiting
Over-Temperature Protection with Auto-Restart
Brownout Protection with Auto-Restart
V_DD Over-Voltage Protection with Auto-Restart
V_DD Under-Voltage Lockout (UVLO)
Gate Output Maximum Voltage Clamped at 18V
SOP-8 Package