TM
EV0055 (MP1530)
Triple Output Step-Up
Plus Charge Pump for TFT Bias
EVALUATION BOARD
The Future of Analog IC Technology
TM
DESCRIPTION
The EV0055 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.
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
250mΩ Internal 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
TFT LCD Displays
Portable DVD Players
Tablet PCs
Car Navigation Displays
ELECTRICAL SPECIFICATIONS
Parameter
Input Voltage
Output Voltage 1
Output Current 1
Output Voltage 2
Output Current 2
Output Voltage 3
Output Current 3
Symbol
V
IN
V
MAIN
I
MAIN
V
GH
I
GH
V
GL
I
GL
Value
2.7 – 5.5
+13
350
+27
20
–8.5
20
Units
V
V
mA
V
mA
V
mA
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•
•
•
•
•
•
•
•
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APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
EV0055 EVALUATION BOARD
Efficiency vs
Load Current
100
90
V
IN
=5V
V
IN
=3.3V
(Step-Up Converter Only)
EFFICIENCY (%)
80
70
60
50
40
Dimensions (2.4”X x 2.3”Y x 0.4”Z)
Board Number
EV0055
EV0055 Rev. 1.3
8/22/2005
30
MPS IC Number
MP1530DQ
1
10
100
LOAD CURRENT (mA)
1000
MP1530_EC01
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
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MPS [ MONOLITHIC POWER SYSTEMS ]
