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The Future of Analog IC Technology
EV0074 (MP1530)
Triple Output
TFT Bias Converter
EVALUATION BOARD
EV0074 (MP1530) Rev. 1.2
8/23/2005
www.MonolithicPower.com
1
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2005 MPS. All Rights Reserved.
TM
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
Symbol
Input Voltage
V
IN
Output Voltage 1
V
MAIN
Output Current 1
I
MAIN
Output Voltage 2
V
GH
Output Current 2
I
GH
Output Voltage 3
V
GL
Output Current 3
I
GL
Value
2.7 – 5.5
+13
350
+27
20
–8.5
20
Units
V
V
mA
V
mA
V
mA
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
250m
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
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
100
90
80
70
60
50
40
30
20
E
10
10
100
1000
LOAD CURRENT (mA)
MP1530-EC02
Efficiency vs
Load Current
Step-Up Converter Only
V
MAIN
= 13V
V
IN
=3.3V
V
IN
=5.0V