Typical operating characteristics (continued) – Rainbow Electronics MAX1779 User Manual
Page 7
MAX1779
Low-Power Triple-Output TFT LCD DC-DC
Converter
_______________________________________________________________________________________
7
100
µs/div
LOAD TRANSIENT WITHOUT INTEGRATOR
(L = 10
µH, 500µs PULSE)
MAX1779-16
A. V
MAIN
= 5V, 50mV/div
B. V
MAIN
= 5mA to 50mA, 25mA/div
INTG = REF,
FIGURE 6
5.0V
0
4.9V
A
B
50mA
10
µs/div
LOAD TRANSIENT WITHOUT INTEGRATOR
(L = 10
µH, 5µs PULSE)
MAX1779-17
A. V
MAIN
= 5V, 100mV/div
B. I
L
, 200mA/div
C. I
MAIN
= 10mA to 100mA, 100mA/div
INTG = REF, FIGURE 6
5.0V
0
400mA
A
B
100mA
200mA
0
C
Typical Operating Characteristics (continued)
(Circuit of Figure 5, V
IN
= +3.3V, T
A
= +25°C, unless otherwise noted.)
100
µs/div
LOAD TRANSIENT
(L = 33
µH, 500µs PULSE)
MAX1779-18
A. V
MAIN
= 5V, 50mV/div
B. I
MAIN
= 10mA to 100mA, 50mA/div
FIGURE 5
5.1V
0
A
B
4.9V
100mA
5V
100
µs/div
LOAD TRANSIENT WITHOUT INTEGRATOR
(L = 33
µH, 500µs PULSE)
MAX1779-19
A. V
MAIN
= 5V, 50mV/div
B. I
MAIN
= 10mA to 100mA, 50mA/div
INTG = REF, FIGURE 5
5.1V
0
A
B
4.9V
100mA
5.0V
10
µs/div
LOAD TRANSIENT
(L = 33
µH, 5µs PULSE)
MAX1779-20
A. V
MAIN
= 5V, 50mV/div
B. I
MAIN
= 20mA to 200mA, 100mA/div
FIGURE 5
5.1V
0
A
B
4.9V
200mA
5.0V
200
µs/div
STARTUP WAVEFORM
(L = 10
µH)
MAX1779-21
A. V
SHDN
= 0 to 2V, 2V/div
B. V
MAIN
= 5V, 1V/div
C. I
L
, 500 mA/div
FIGURE 6
, R
MAIN
= 100
Ω
2V
0
A
B
3V
500mA
0
5V
C