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PDF ( 数据手册 , 数据表 ) EV0074

零件编号 EV0074
描述 Triple Output TFT Bias Converter
制造商 MPS
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EV0074 数据手册, 描述, 功能
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TM
The Future of Analog IC Technology TM
DESCRIPTION
The EV0074 evaluation board is designed to
demonstrate the capabilities of MPS’ MP1530
triple output step-up converter which is capable of
powering a TFT panel from a regulated 3.3V or 5V.
The MP1530 includes a 1.4MHz fixed-frequency
step-up converter and a positive and negative
linear regulator. The linear regulators are powered
from a charge-pump driven by the step-up
converter switch node (SW).
A single on/off control enables all 3 outputs. The
outputs are internally sequenced at power on and
power off for ease of use. An internal soft-start
prevents overloading the input source at startup.
Cycle-by-cycle over current protection limits
component overstress.
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
VMAIN
IMAIN
VGH
IGH
VGL
IGL
Value
2.7 – 5.5
+13
350
+27
20
–8.5
20
Units
V
V
mA
V
mA
V
mA
EV0074 (MP1530)
Triple Output
TFT Bias Converter
EVALUATION BOARD
FEATURES
2.7 to 5.5V Operating Input Range
2.8A Switch Current Limit
3 Outputs In Single Package
Step-Up Converter up to 22V
Positive 20mA Linear Regulator
Negative 20mA Linear Regulator
250mInternal Power MOSFET Switch
Up to 95% Efficiency
1µA Shutdown Mode
Fixed 1.4MHz Frequency
Positive Regulator up to 38V
Negative Regulator down to –20V
Internal Power-On Sequencing
Adjustable Soft-Start/Fault Timer
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Under Voltage Lockout
Ready Flag
APPLICATIONS
TFT LCD Displays
Portable DVD Players
Tablet PCs
Car Navigation Displays
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
EV0074 EVALUATION BOARD
Dimensions (2.4”X x 2.2”Y x 0.5”Z)
Board Number
EV0074
MPS IC Number
MP1530
Efficiency vs
Load Current
Step-Up Converter Only
100 VMAIN = 13V VIN=5.0V
90
80 VIN=3.3V
70
60
50
40
30
20
10
10 100 1000
LOAD CURRENT (mA)
MP1530-EC02
EV0074 (MP1530) Rev. 1.2
www.MonolithicPower.com
8/23/2005
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
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