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FAN5330 Folha de dados(PDF) 1 Page - Fairchild Semiconductor

Nome de Peças FAN5330
Descrição Electrónicos  High Efficiency Serial LED Driver with 30V Integrated Switch
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Fabricante Electrônico  FAIRCHILD [Fairchild Semiconductor]
Página de início  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN5330 Folha de dados(HTML) 1 Page - Fairchild Semiconductor

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©2005 Fairchild Semiconductor Corporation
1
www.fairchildsemi.com
August 2005
FAN5330 Rev. 1.0.1
FAN5330
High Efficiency Serial LED Driver with 30V Integrated
Switch
Features
■ 1.5MHz Switching Frequency
■ Low Noise
■ Adjustable Output Voltage
■ 0.7W Output Power Capability
■ Low Shutdown Current: <1µA
■ Cycle-by-Cycle Current Limit
■ Low Feedback Voltage (110mV)
■ Over-Voltage Protection
■ Fixed-Frequency PWM Operation
■ Internal Compensation
■ Thermal Shutdown
■ 5-Lead SOT23 Package
Applications
■ Cell Phones
■ PDAs
■ Handheld Equipment
■ Display Bias
■ LED Bias
Description
The FAN5330 is an LED driver that features fixed frequency
mode operation and an integrated FET switch. This device is
designed to operate at high switching frequencies in order to
minimize switching noise measured at the battery terminal of
hand-held communications equipment. Quiescent current in
both normal and shutdown mode is designed to be minimal in
order to extend battery life. Normal or shutdown mode can be
selected by a logic level shutdown circuitry.
The low ON-resistance of the internal N-channel switch ensures
high efficiency and low power dissipation. A cycle-by-cycle cur-
rent limit circuit keeps the peak current of the switch below a
typical value of 1.5A. The FAN5330 is available in a 5-lead
SOT23 package.
Typical Application
Figure 1. Typical Application Diagram
SHDN
VIN
VOUT
R
GND
V
IN
FB
SW
CIN
6.8µH to 10µH
1
3
2
4
5
2.2
µF
COUT
L
BAT54
ILED
0.47
µF
ON
OFF


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