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MP3204 Folha de dados(PDF) 1 Page - Monolithic Power Systems

Nome de Peças MP3204
Descrição Electrónicos  1.3MHz Fixed Frequency 5 White LED Driver with Open LED Protection
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Fabricante Electrônico  MPS [Monolithic Power Systems]
Página de início  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP3204 Folha de dados(HTML) 1 Page - Monolithic Power Systems

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MP3204
1.3MHz Fixed Frequency
5 White LED Driver with Open LED Protection
MP3204 Rev. 1.3
www.MonolithicPower.com
1
9/23/2005
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
The Future of Analog IC Technology
TM
TM
DESCRIPTION
The MP3204 is a step-up converter designed
for driving up to 5 series white LEDs from a
single cell Lithium Ion battery. The MP3204
uses current mode, fixed frequency architecture
to regulate the LED current, which is measured
through an external current sense resistor. Its
low 104mV feedback voltage reduces power
loss and improves efficiency. The OV pin
monitors the output voltage and turns off the
converter if an over-voltage condition is present
due to an open circuit condition.
The MP3204 includes under-voltage lockout,
current limiting and thermal overload protection
preventing damage in the event of an output
overload. The MP3204 is available in a small
6-pin TSOT23 package.
EVALUATION BOARD REFERENCE
Board Number
Dimensions
EV3204DJ-00A
1.9”X x 1.8”Y x 0.4”Z
FEATURES
• On Board Power MOSFET
• Drives up to 5 Series White LEDs
• Up to 87% Efficiency
• Over 1MHz Fixed Switching Frequency
• Low 104mV Feedback Voltage
• Soft-Start/PWM Dimming
• UVLO, Thermal Shutdown
• Internal Current Limit
• Open Load Shutdown
• Available in a TSOT23-6 Package
APPLICATIONS
• Cell Phones
• Handheld Computers and PDAs
• Digital Still Cameras
• Small LCD Displays
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
MP3204
VIN
5V
LED1
LED2
LED3
LED4
LED5
EN
MP3204-TAC-S01
FB
OV
EN
1
5
3
2
4
6
SW
IN
GND
88
87
86
85
84
83
82
81
80
79
78
77
5
101520
LED CURRENT (mA)
MP3204-EC01
Efficiency vs
LED Current
3 LEDs
4 LEDs
VIN=3.6V
5 LEDs


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