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FAN100 Datasheet

  • FAN100

  • Primary-Side-Control PWM Controller

  • 14頁(yè)

  • FAIRCHILD

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FAN100 鈥?Primary-Side-Control PWM Controller
August 2008
FAN100
Primary-Side-Control PWM Controller
Features
Constant-Voltage (CV) and Constant-current (CC)
Control without Secondary-feedback Circuitry
Green Mode PWM Frequency Linearly Decreasing
Fixed PWM Frequency at 42kHz with Frequency
Hopping to Solve EMI Problem
Low Startup Current: 10渭A
Low Operating Current: 3.5mA
Peak-Current-Mode Control in CV Mode
Cycle-by-Cycle Current Limiting
V
DD
Over-Voltage Protection with Auto-Restart
V
DD
Under-Voltage Lockout (UVLO)
Gate Output Maximum Voltage Clamped at 18V
Fixed Over-temperature Protection with Latch
SOP-8 Package Available
Description
This highly integrated PWM controller, FAN100,
provides several features to enhance the performance
of low-power flyback converters. The proprietary
topology enables simplified circuit design for battery
charger applications. A low-cost, smaller, and lighter
charger results when compared to a conventional
design or a linear transformer. The startup current is
only 10碌A(chǔ), which allows use of large startup resistance
for further power saving.
To minimize the standby power consumption, the
proprietary green-mode function provides off-time
modulation to linearly decrease PWM frequency under
light-load conditions. This green-mode function assists
the power supply meeting the power conservation
requirements.
Using FAN100, a charger can be implemented with
fewest external components and minimized cost. A
typical output CV/CC characteristic envelope is shown
in Figure 1.
FAN100 controller is available in an 8-pin SOP package.
Applications
Battery chargers for cellular phones, cordless
phones, PDA, digital cameras, power tools
Replaces linear transformer and RCC SMPS
Related Resources
AN-6067 Design Guide for
FAN100/102/FSEZ1016A/1216
Figure 1. Typical Output V-I Characteristic
Ordering Information
Part Number
FAN100MY
Operating
Temperature Range
-40擄C to +105擄C
Eco Status
Green
Package
8-Lead, Small Outline
Package (SOP-8)
Packing Method
Tape & Reel
For Fairchild鈥檚 definition of 鈥済reen鈥?Eco Status, please visit:
http://www.fairchildsemi.com/company/green/rohs_green.html.
漏 2008 Fairchild Semiconductor Corporation
FAN100 Rev. 1.0.0
www.fairchildsemi.com

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