MP1523DT MPS [Monolithic Power Systems], MP1523DT Datasheet

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MP1523DT

Manufacturer Part Number
MP1523DT
Description
6 White LEDs, 20mA Precision WLED Driver Evaluation Board
Manufacturer
MPS [Monolithic Power Systems]
Datasheet
1.MP1523DT.pdf (4 pages)

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The Future of Analog IC Technology
DESCRIPTION
The EV0035 is the evaluation board for the
MP1523, which is designed for driving up to six
(6) series WLEDs from a single cell Lithium Ion
battery. The board is set up to obtain 20mA
LED current. The current can be adjusted by
varying the resistor R2.
The MP1523 uses current limited, variable
frequency architecture to regulate the LED
current while maintaining high efficiency. The
BIAS pin measures the output voltage and turns
off the converter if an over voltage condition is
present to prevent damage due to an open
circuit condition. The LED current is measured
with an external current sense resistor. The low
0.4V full-scale regulation threshold and 0.5Ω
power switch minimize power loss to improve
efficiency.
ELECTRICAL SPECIFICATIONS
EV0035 EVALUATION BOARD
EV0035 Rev. 1.2
3/30/2006
Parameter
Input Voltage
# of WLEDs
LED Current
Board Number
EV0035
(L x W x H) 2.0” x 1.4” x 0.5”
(5.0cm x 3.5 x 1.2cm)
Symbol
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
I
V
LED
IN
MPS IC Number
MP1523DT
2.7 – 25
up to 6
Value
20
© 2006 MPS. All Rights Reserved.
www.MonolithicPower.com
Units
TM
TM
mA
V
FEATURES
•
•
•
•
APPLICATIONS
•
•
•
•
Power Systems, Inc.
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
2.7V to 25V Input Voltage Range
Drives up to 6 Series White LEDs
Surface-Mount Components
Fully Assembled and Tested
Cell Phones
Handheld Computers and PDAs
Digital Still and Video Cameras
Small LCD Displays
WLED Driver Evaluation Board
6 White LEDs, 20mA Precision
85
80
75
70
2.5
Efficiency vs V
3.0
V
IN
3.5
(V)
IN
EV0035
4.0
EV0035_AC01
4.5
1

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MP1523DT Summary of contents

Page 1

... LED Current I LED EV0035 EVALUATION BOARD ( 2.0” x 1.4” x 0.5” (5.0cm x 3.5 x 1.2cm) Board Number MPS IC Number EV0035 MP1523DT EV0035 Rev. 1.2 3/30/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited White LEDs, 20mA Precision WLED Driver Evaluation Board TM FEATURES • ...

Page 2

... GND FB Package Manufacturer 1206 0603 SMD 0603 0603 SOT23-5 MPS www.MonolithicPower.com © 2006 MPS. All Rights Reserved. LED1 LED2 C3 LED3 10nF LED4 LED5 LED6 EV0035_S01 Part Number TDK C3216X7R1H105K TDK C1608X7R1H103K ON MBR0540T1 Semiconductor Sumida CDRH3D16-150NC Panasonic ERJ-3GEYJ104V Panasonic ERJ-3GEYJ200V MP1523DT 2 ...

Page 3

TM EV0035 – 6 WHITE LEDs, 20mA PRECISION WLED DRIVER EVALUATION BOARD PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer EV0035 Rev. 1.2 3/30/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. Figure 2—Top Layer Figure 3—Bottom Layer www.MonolithicPower.com © ...

Page 4

TM EV0035 – 6 WHITE LEDs, 20mA PRECISION WLED DRIVER EVALUATION BOARD QUICK START GUIDE 1. Solder LED1 – LED6 onto the board. 2. Connect VCC to the power source’s positive output. 3. Connect GND to supply ground. 4. Remove ...

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