EV1541DJ-TFT-00A
MP1541 TFT Applications Evaluation Board
EVALUATION BOARD
The Future of Analog IC Technology
TM
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 2.5
V and can generate 12V at up to 200mA from a 5V supply. The EV1541DJ-TFT-00A provides V OUT from the boost output and also derives V P (positive) and V N (negative) from the charge pumps off of the boost switching node.
ELECTRICAL SPECIFICATIONS
Parameter Symbol Value Units Input Voltage V IN 3 – 3.6 V Output Voltage 1 V OUT 5
V Output Current 1 I OUT 200 mA Output Voltage 2 V N –10 V Output Current 2 I N 10 mA Output Voltage 3 V P 15 V Output Current 3
I P 20 mA
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
实时
监控系统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
MPS IC Number
EV1541DJ-TFT-00A MP1541DJ
EV1541DJ-TFT-00A – MP1541 TFT APPLICATIONS EVALUATION BOARD
EVALUATION BOARD
TM
EVALUATION BOARD SCHEMATIC
EV1541_TFT_S01
VGL
VN
--10V @ 10mA
EV1541DJ-TFT-00A – MP1541 TFT APPLICATIONS EVALUATION BOARD
EVALUATION BOARD TM
EV1541DJ-TFT-00A BILL OF MATERIALS
Qty Ref Value
Description Package
Manufacturer Manufacturer
P/N
1 C1 10µF Ceramic Cap, 10V, X5R 1210 TDK C3225X5R1A106K
3 C2, C10,
C17
NS Not
Stuffed
1 C3 4.7µF Ceramic Cap, 10V, X5R 1210 Taiyo Yuden LMK325BJ475KD
10
C4, C5,
C6, C7,
C8, C11,
C12, C13,
C14, C15
0.1µF Ceramic Cap, 50V, X7R 0805 TDK C2012X7R1H1 04K
2 C9, C16 1µF Ceramic Cap, 25V, X5R 0805 TDK C2012X5R1E105K 1 D1 Schottky Diodes, 40V, 1A SOD-12
3 Diodes Inc 1N5819HW-7
冲淋房6 D2, D3,
D4, D5,
D6, D7
Diode Rectifier, Dual, 30V,
200mA
SOT-123 Fairchild BAT54S
2 JP1, JP2 3-Pin Connector Header, 0.100 Sullins PTC03SAAN
1 L1 3.3µH
1.6A Sumida CDRH4D28CLD-3R3 1 R1 30.1kΩMetal Film Res, 1% 0805 Panasonic ERJ-6ENF3012V
1 R
2 10kΩMetal Film Res, 1% 0805 Panasonic ERJ-6ENF1002V黑陶工艺品
2 R3,
R5 100kΩMetal Film Res, 5% 0805 Panasonic ERJ-6GEYJ104V
3 R4, R6,
R7
NS Not
ca130
Stuffed
1 U1 DC-DC
Converter TSOT23-5MPS MP1541DJ 2 ZD1, ZD2 NS Not Stuffed
EV1541DJ-TFT-00A – MP1541 TFT APPLICATIONS EVALUATION BOARD
EVALUATION BOARD
TM
PRINTED CIRCUIT BOARD LAYOUT
Figure 1—Top Silk Layer
Figure 2—Top Layer
Figure 3—Bottom Layer
EV1541DJ-TFT-00A – MP1541 TFT APPLICATIONS EVALUATION BOARD
EVALUATION BOARD
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
故障检测晶塔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. TM
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 ≤ V IN ≤ 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:
客车门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 V OUT can be changed by varying R1. Calculate the new value using the
formula:
2R 1V V 1R FB OUT ⎟⎟⎠
⎞
⎜⎜⎝⎛−=
Where V FB = 1.25V and R2 = 10k Ω For example, for V OUT = 7.5V
Ω=Ω×⎟⎠
⎞
⎜
⎝⎛−=k 50k 101V 25.1V 5.71R Therefore use a 49.9k Ω standard 1% value resistor.
豫公网安备41160202000603
站长QQ:729038198
关于我们
投诉建议