MP3205DJ MPS [Monolithic Power Systems], MP3205DJ Datasheet

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MP3205DJ

Manufacturer Part Number
MP3205DJ
Description
1.3MHz Fixed Frequency 5 White LED Driver
Manufacturer
MPS [Monolithic Power Systems]
Datasheet

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The Future of Analog IC Technology
GENERAL DESCRIPTION
The MP3205 is a step-up converter designed
for driving up to 5 series white LEDs from a
single cell Lithium Ion battery. The MP3205
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 MP3205 includes under-voltage lockout,
current limiting and thermal overload protection
preventing damage in the event of an output
overload. The MP3205 is available in a small
5-pin TSOT23 package.
ELECTRICAL SPECIFICATION
EV3205DJ-00A EVALUATION BOARD
EV3205DJ-00A Rev. 1.1
7/13/2005
Parameter
Input Voltage
Number of WLEDs
Board Number
EV3205DJ-00A
Dimensions (1.9”X x 1.8”Y x 0.4”Z)
Symbol
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
V
IN
MPS IC Number
MP3205DJ
2.5 to 6
Value
5
© 2005 MPS. All Rights Reserved.
www.MonolithicPower.com
Units
TM
TM
V
FEATURES
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Trademarks of
Monolithic Power Systems, Inc.
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
Cell Phones
Handheld Computers and PDAs
Digital Still Cameras
Small LCD Displays Application
88
87
86
85
84
83
82
81
80
79
78
77
1.3MHz Fixed Frequency
5
Efficiency vs
LED Current
EV3205DJ-00A
LED CURRENT (mA)
3 LEDs
5 White LED Driver
10
EVALUATION BOARD
4 LEDs
15
5 LEDs
V
IN
MP3205-EC01
=3.6V
20
1

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MP3205DJ Summary of contents

Page 1

... Small LCD Displays Application “MPS” and “The Future of Analog IC Technology” are Trademarks of Value Units Monolithic Power Systems, Inc. 2 MP3205DJ www.MonolithicPower.com © 2005 MPS. All Rights Reserved. EV3205DJ-00A 1.3MHz Fixed Frequency 5 White LED Driver EVALUATION BOARD Efficiency vs LED Current ...

Page 2

... LED4 IN SW LED5 MP3205 EN FB GND Package 0805 0805 SOD-323 D31FB 0805 0805 TSOT23-5 www.MonolithicPower.com © 2005 MPS. All Rights Reserved. EVALUATION BOARD EV3205_S01 Manufacturer Manufacturer P/N TDK C2012X5R1A225K TDK C2012X7R1E224K Diodes Inc. B0530WS-7 Toko 984FB-220M Panasonic ERJ-6GEYJ104V Panasonic ERJ-6GEYJ5R1V MPS MP3205DJ 2 ...

Page 3

TM PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer QUICK START GUIDE 1. Solder LED1 through LED5 to the board. 2. Connect the positive and negative terminals of power supply (2.5V to 6V) to VIN and GND pins, respectively. 3. ...

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