MP1530 – TRIPLE OUTPUT STEP-UP PLUS LINEAR REGULATORS FOR TFT BIAS
TYPICAL PERFORMANCE CHARACTERISTICS
Circuit of Figure 3, VIN = 5V, VMAIN = 13V, IMAIN = 200mA, VGL = -8.5V, IGL = 10mA, VGH = 27V,
IGH = 10mA, TA = +25C, unless otherwise noted.
Efficiency vs
Step-Up Converter
Load Current
Load Regulation
(Step-Up Converter Only)
13.005
13.000
12.995
12.990
12.985
12.980
12.975
12.970
12.965
100
90
80
70
60
50
40
30
V
=5V
IN
V
=3.3V
IN
V
=7.5V
MAIN
1
10
I
100
(mA)
1000
1
10
100
1000
LOAD CURRENT (mA)
MAIN
Positive Linear Regulator
Load Regulation
Negative Linear Regulator
Load Regulation
27.05
27.03
27.01
26.99
26.97
26.95
26.93
26.91
26.89
26.87
26.85
-8.465
-8.475
-8.485
-8.495
-8.505
-8.515
-8.525
-8.535
-8.545
-8.555
-8.565
0
10
20
I
30
40
50
0
10
20
I
30
40
50
(mA)
(mA)
GH
GL
Power-On Sequence
Power-On Sequence
V
V
EN
CT
5V/div.
1V/div.
V
MAIN
5V/div.
V
V
MAIN
GL
5V/div.
10V/div.
V
GL
10V/div.
V
V
GH
GH
10V/div.
10V/div.
10ms/div.
10ms/div.
MP1530 Rev. 1.41
5/25/2011
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