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| MP1530DQ-LF-Z Datasheet, PDF (1/16 Pages) MPS Industries, Inc. – Triple Output Step-Up Plus Linear Regulators for TFT Bias | |||
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The Future of Analog IC Technology
MP1530
Triple Output Step-Up
Plus Linear Regulators for TFT Bias
DESCRIPTION
The MP1530 combines a triple output step-up
converter with linear regulators to provide a
complete DC/DC solution. It is designed to
power TFT LCD panels from a regulated 3.3V
or 5V supply.
This device integrates a 1.4MHz
fixed-frequency step-up converter with positive
and negative linear regulators. The step-up
converter switch node drives two charge
pumps, which supply powers to their respective
linear regulators. The positive and negative
linear regulator inputs can withstand up to 38V
and down to -20V, respectively.
A single on/off control enables all 3 outputs.
The outputs are internally sequenced at startup
for ease of use. An internal soft-start prevents
input overload at startup. Cycle-by-cycle current
limiting reduces component stress.
The MP1530 is available in a tiny 3x3mm, 16-
pin QFN package or a 16-pin TSSOP package.
EVALUATION BOARD REFERENCE
Board Number
Dimensions
EV0055
2.4âX x 2.3âY x 0.4âZ
TYPICAL APPLICATION
VIN
3.3V/5V
OFF ON
TO
SW
VGL
CT
EN
COMP
RDY
IN
SW
FB1
IN2
MP1530
IN3
GL
FB2
GH
FB3
REF
GND
PGND
FEATURES
ï· 2.7 to 5.5V Operating Input Range
ï· 2.8A Switch Current Limit
ï· 3 Outputs In a Single Package
ï§ Step-Up Converter up to 22V
ï§ Positive 20mA Linear Regulator
ï§ Negative 20mA Linear Regulator
ï· 250m⦠Internal Power MOSFET Switch
ï· Up to 95% Efficiency
ï· 1.4MHz Fixed Frequency
ï· Internal Power-On Sequencing
ï· Adjustable Soft-Start/Fault Timer
ï· Cycle-by-Cycle Over Current Protection
ï· Under Voltage Lockout
ï· Ready Flag
ï· 16-Pin, QFN (3x3mm) or TSSOP Packages
APPLICATIONS
ï· TFT LCD Displays
ï· Portable DVD Players
ï· Tablet PCs
ï· Car Navigation Displays
For MPS green status, please visit MPS website under Quality Assurance.
âMPSâ and âThe Future of Analog IC Technologyâ are Trademarks of Monolithic
Power Systems, Inc.
Efficiency vs
Load Current
(Step-Up Converter Only)
100
VIN = 5.0V
90
VMAIN
80
VIN = 3.3V
70
60
50
40
VGH
30
VMAIN = 13V
20
1
10
100
1000
LOAD CURRENT (mA)
MP1530 Rev. 1.41
www.MonolithicPower.com
1
5/25/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
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