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PDF EV1541DJ-TFT-00A Data sheet ( Hoja de datos )
| Número de pieza | EV1541DJ-TFT-00A | |
| Descripción | TFT Applications Evaluation Board | |
| Fabricantes | MPS | |
| Logotipo |  |
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TM
The Future of Analog IC Technology TM
GENERAL DESCRIPTION
The EV1541DJ-TFT-00A is the evaluation
board for TFT applications using the MP1541.
The MP1541 is a 5-pin thin SOT23 current
mode step up converter intended for small, low
power applications. The MP1541 switches at
1.3MHz and allows the use of tiny, low cost
capacitors and inductors 2mm or less in height.
Internal soft start results in small inrush current
and extends battery life. The MP1541 operates
from an input voltage as low as 2.5V and can
generate 12V at up to 200mA from a 5V supply.
The EV1541DJ-TFT-00A provides VOUT from
the boost output and also derives VP (positive)
and VN (negative) from the charge pumps off of
the boost switching node.
ELECTRICAL SPECIFICATIONS
Parameter
Input Voltage
Output Voltage 1
Output Current 1
Output Voltage 2
Output Current 2
Output Voltage 3
Output Current 3
Symbol
VIN
VOUT
IOUT
VN
IN
VP
IP
Value
3 – 3.6
5
200
–10
10
15
20
Units
V
V
mA
V
mA
V
mA
EV1541DJ-TFT-00A
MP1541 TFT Applications
Evaluation Board
EVALUATION BOARD
FEATURES
• 3V to 3.6V Operating Input Range
• Uses Tiny Capacitors and Inductors
• 1.3MHz Fixed Switching Frequency
• Internally Compensated
• Internal Soft Start
• 3 Outputs in a Single Package: Boost
Converter for 5V, Charge Pump for 15V,
and Negative Charge Pump for –10V
• UVLO, Thermal Shutdown
• Internal Current Limit
• Available in a TSOT23-5 Package
APPLICATIONS
• Handheld Computers and PDAs
• Digital Still and Video Cameras
• Small LCD Displays
“MPS” and “The Future of Analog IC Technology”, are Trademarks of Monolithic
Power Systems, Inc.
EV1541DJ-TFT-00A EVALUATION BOARD
Dimensions (2.0”X x 2.0”Y x 0.4”Z)
Board Number
EV1541DJ-TFT-00A
MPS IC Number
MP1541DJ
EV1541DJ-TFT-00A Rev. 1.0
www.MonolithicPower.com
6/8/2005
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
1
1 page  
TM
EV1541DJ-TFT-00A – MP1541 TFT APPLICATIONS EVALUATION BOARD
EVALUATION BOARD
QUICK START GUIDE
The output voltage of this board is set to 5V, –10V and 15V on VOUT, VN and VP, respectively. The
board layout accommodates most commonly used inductors and output capacitors.
1. Preset the power supply to 3V ≤ VIN ≤ 3.6V.
2. Turn off the power supply.
3. Connect the power supply terminals to:
a. Positive (+): VIN, EN
b. Negative (–): GND
4. Connect the load to:
a. Positive (+): VOUT, VP, GND (for the negative output)
b. Negative (–): GND, VN (for the negative output)
5. Turn on the power supply after making the connections.
6. The MP1541 is disabled on the evaluation board if only VIN is applied. To enable the MP1541,
EN needs to be pulled HIGH.
7. The output voltage VOUT can be changed by varying R1. Calculate the new value using the
formula:
R1
=
⎜⎜⎝⎛
VOUT
VFB
− 1⎟⎟⎠⎞R2
Where VFB = 1.25V and R2 = 10kΩ
For example, for VOUT = 7.5V
R1 =
⎜⎛
⎝
7.5V
1.25V
− 1⎟⎞ × 10kΩ
⎠
=
50kΩ
Therefore use a 49.9kΩ standard 1% value resistor.
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
EV1541DJ-TFT-00A Rev. 1.0
www.MonolithicPower.com
6/8/2005
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
5
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| PDF Descargar | [ Datasheet EV1541DJ-TFT-00A.PDF ] | |
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