MAX8795A Maxim Integrated Products, MAX8795A Datasheet - Page 12

• Manufacturer Part Number: MAX8795A
• Description: TFT-LCD DC-DC Converter
• Manufacturer: Maxim Integrated Products

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TFT-LCD DC-DC Converter with
Operational Amplifiers
(Circuit of Figure 1, V
12
-0.2
-0.4
-0.6
-0.8
-1.0
0.4
0.2
0
______________________________________________________________________________________
-16
GATE-OFF REGULATOR LINE REGULATION
I
NEG
= 50mA
-14
INPUT VOLTAGE (V)
IN
3.6
3.5
3.4
3.3
3.2
3.1
3.0
2.9
2.8
= 5V, V
6
-12
8
MAIN
SUP SUPPLY CURRENT
vs. SUP VOLTAGE
10
= 14V, V
V
-10
SUP
12
(V)
GON
14
-0.2
-0.4
-0.6
-0.8
-1.0
Typical Operating Characteristics (continued)
= 25V, V
0.2
0
16
GATE-OFF REGULATOR LOAD REGULATION
0
18
GOFF
10
LOAD CURRENT (mA)
= -10V, T
20
A
30
= +25°C, unless otherwise noted.)
I
BOOST
= 0mA
40
A: INPUT SIGNAL, 5V/div
B: OUTPUT SIGNAL, 5V/div
V
SUP
RAIL-TO-RAIL INPUT/OUTPUT
= 15V
50
OPERATIONAL-AMPLIFIER
4µs/div
A: V
B: V
MAIN
POS
, 20V/div
, 10V/div
POWER-UP SEQUENCE
MAX8795A toc14
4ms/div
0V
0V
A
B
C: V
D: V
NEG
COM
MAX8795A toc12
, 10V/div
, 20V/div
0V
0V
0V
A
0V
B
C
D