MAX1779 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX1779 Datasheet PDF : 18 Pages
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Low-Power Triple-Output TFT LCD DC-DC
Converter
Typical Operating Characteristics (continued)
(Circuit of Figure 5, VIN = +3.3V, TA = +25°C, unless otherwise noted.)
LOAD TRANSIENT WITHOUT INTEGRATOR
(L = 10µH, 500µs PULSE)
MAX1779-16
LOAD TRANSIENT WITHOUT INTEGRATOR
(L = 10µH, 5µs PULSE)
MAX1779-17
LOAD TRANSIENT
(L = 33µH, 500µs PULSE)
5.1V
MAX1779-18
5.0V
5.0V
A
A
5V
A
4.9V
400mA
200mA
B
4.9V
50mA
0
100mA
B 100mA
B
C
0
0
0
100µs/div
A. VMAIN = 5V, 50mV/div
B. VMAIN = 5mA to 50mA, 25mA/div
INTG = REF, FIGURE 6
LOAD TRANSIENT WITHOUT INTEGRATOR
(L = 33µH, 500µs PULSE)
5.1V
MAX1779-19
5.0V
A
4.9V
100mA
B
0
10µs/div
A. VMAIN = 5V, 100mV/div
B. IL, 200mA/div
C. IMAIN = 10mA to 100mA, 100mA/div
INTG = REF, FIGURE 6
LOAD TRANSIENT
(L = 33µH, 5µs PULSE)
5.1V
MAX1779-20
5.0V
A
4.9V
200mA
B
0
100µs/div
A. VMAIN = 5V, 50mV/div
B. IMAIN = 10mA to 100mA, 50mA/div
FIGURE 5
2V
0
5V
3V
500mA
0
STARTUP WAVEFORM
(L = 10µH)
MAX1779-21
A
B
C
100µs/div
A. VMAIN = 5V, 50mV/div
B. IMAIN = 10mA to 100mA, 50mA/div
INTG = REF, FIGURE 5
10µs/div
A. VMAIN = 5V, 50mV/div
B. IMAIN = 20mA to 200mA, 100mA/div
FIGURE 5
200µs/div
A. VSHDN = 0 to 2V, 2V/div
B. VMAIN = 5V, 1V/div
C. IL, 500 mA/div
FIGURE 6, RMAIN = 100Ω
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