MP1530 – TRIPLE OUTPUT STEP-UP PLUS LINEAR REGULATORS FOR TFT BIAS
TYPICAL PERFORMANCE CHARACTERISTICS
(continued)
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.
Normal Operation
I
MAIN
200mA/div.
V
SW
5V/div.
V
MAIN AC
50mV/div.
V
MAIN AC
100mV/div.
Load Transient on
V
MAIN
I
MAIN
= 20mA - 200mA Step
I
INDUCTOR
0.5A/div.
400ns/div.
Fault Timer
V
MAIN
Shorted to V
IN
1.256
1.254
V
MAIN
5V/div.
V
CT
1V/div.
V
GL
10V/div.
Reference Voltage vs
Temperature
1.252
V
REF
(V)
1.250
1.248
1.246
1.244
1.242
1.240
V
GH
20V/div.
2ms/div.
1.238
-50
0
50
100
TEMPERATURE (°C)
150
Oscillator Frequency vs
Temperature
1.50
1.47
FREQUENCY (MHz)
1.44
1.41
1.38
1.35
1.32
1.29
1.26
-50
0
50
100
TEMPERATURE (°C)
150
MP1530 Rev. 1.4
5/19/2006
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5
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