MP1530 – TRIPLE OUTPUT STEP-UP PLUS LINEAR REGULATORS FOR TFT BIAS
TYPICAL PERFORMANCE CHARACTERISTICS
Circuit of Figure 3, V
IN
= 5V, V
MAIN
= 13V, I
MAIN
= 200mA, V
GL
= -8.5V, I
GL
= 10mA, V
GH
= 27V,
I
GH
= 10mA, T
A
= +25°C, unless otherwise noted.
Efficiency vs
Load Current
100
90
(Step-Up Converter Only)
13.005
V
IN
=5V
V
IN
=3.3V
13.000
12.995
Step-Up Converter
Load Regulation
EFFICIENCY (%)
80
70
60
50
40
30
1
V
MAIN
(V)
12.990
12.985
12.980
12.975
V
MAIN
=7.5V
10
100
LOAD CURRENT (mA)
1000
12.970
12.965
1
10
100
I
MAIN
(mA)
1000
Negative Linear Regulator
Load Regulation
-8.465
-8.475
-8.485
-8.495
Positive Linear Regulator
Load Regulation
27.05
27.03
27.01
26.99
V
GL
(V)
V
GH
(V)
-8.505
-8.515
-8.525
-8.535
-8.545
-8.555
-8.565
0
10
20
30
I
GL
(mA)
40
50
26.97
26.95
26.93
26.91
26.89
26.87
26.85
0
10
20
30
I
GH
(mA)
40
50
Power-On Sequence
V
EN
5V/div.
V
MAIN
5V/div.
V
GL
10V/div.
V
CT
1V/div.
V
MAIN
5V/div.
V
GL
10V/div.
V
GH
10V/div.
Power-On Sequence
V
GH
10V/div.
10ms/div.
10ms/div.
MP1530 Rev. 1.4
5/19/2006
www.MonolithicPower.com
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4
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