MAX1516 Datasheet, PDF (9/26 Pages) Maxim Integrated Products – TFT-LCD DC-DC Converters with Operational Amplifiers

TFT-LCD DC-DC Converters with
Operational Amplifiers
Typical Operating Characteristics (continued)
(Circuit of Figure 1. V_IN = 5V, V_MAIN = 13V, V_GON = 24V, V_GOFF = -8V, V_OUT1 = V_OUT2 = V_OUT3 = V_OUT4 = V_OUT5 = 6.5V, T_A = +25°C
unless otherwise noted.)
POWER-UP SEQUENCE
MAX1516 toc12
A
0V
B
0V
0V
C
D
0V
4ms/div
A: V_MAIN, 10V/div
B: V_SRC, 20V/div
C: V_GOFF, 10V/div
D: V_GON, 20V/div
MAX1518 OPERATIONAL-AMPLIFIER
SUPPLY CURRENT vs. SUPPLY VOLTAGE
6
5
4
3
2
1
0
4.5
NO-LOAD
BUFFER CONFIGURATION
V_POS1 TO V_POS5 = V_SUP / 2
6.0 6.5 7.0 7.5 8.0 8.5
SUPPLY VOLTAGE (V)
OPERATIONAL-AMPLIFIER
RAIL-TO-RAIL INPUT/OUTPUT
MAX1516 toc14
V_SUP = 6V
A
0V
B
0V
40µs/div
A: INPUT SIGNAL, 2V/div
B: OUTPUT SIGNAL, 2V/div
OPERATIONAL-AMPLIFIER
LOAD-TRANSIENT RESPONSE
MAX1516 toc15
0V ^A
OPERATIONAL-AMPLIFIER
LARGE-SIGNAL STEP RESPONSE
MAX1516 toc16
V_SUP = 6V
A
OPERATIONAL-AMPLIFIER
SMALL-SIGNAL STEP RESPONSE
MAX1516 toc17
A
+50mA
B
0
-50mA
400ns/div
A: OUTPUT VOLTAGE, 1V/div, AC-COUPLED
B: OUTPUT CURRENT, 50mA/div
1µs/div
A: INPUT SIGNAL, 2V/div
B: OUTPUT SIGNAL, 2V/div
0V
0V
B
B
0V
0V
400ns/div
A: INPUT SIGNAL, 100mV/div
B: OUTPUT SIGNAL, 100mV/div
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