MAX8554 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX8554 Datasheet PDF : 24 Pages
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4.5V to 28V Input, Synchronous PWM Buck Controllers
for DDR Termination and Point-of-Load Applications
Typical Operating Characteristics (continued)
(VV+ = 12V, VOUT = 1.8V, circuit of Figure 1, TA = +25°C, unless otherwise noted.)
POWER-UP WAVEFORMS WITH 20A LOAD
(CIRCUIT OF FIGURE 1)
MAX8553/4 toc14
VIN
10V/div
VOUT
1V/div
VPOK
5V/div
IL
10A/div
0
2ms/div
POWER-DOWN WAVEFORMS WITH 20A LOAD
(CIRCUIT OF FIGURE 1)
MAX8553/4 toc15
VIN
10V/div
VOUT
1V/div
VPOK
5V/div
IL
10A/div
0
1ms/div
STARTUP/SHUTDOWN WAVEFORMS WITH
20A LOAD (CIRCUIT OF FIGURE 1)
MAX8553/4 toc16
VEN
5V/div
VOUT
1V/div
VPOK
5V/div
2A/div
IIN
0
2ms/div
SHORT CIRCUIT AND RECOVERY
(CIRCUIT OF FIGURE 1)
MAX8553/4 toc17
VLX
20V/div
IL
5A/div
1V/div
0A
0V
VOUT
200µs/div
10 ______________________________________________________________________________________
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