EL7531(2005) データシートの表示（PDF） - Intersil
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EL7531 Datasheet PDF : 10 Pages
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EL7531
Performance Curves and Waveforms (Continued)
All waveforms are taken at VIN=3.3V, VO=1.8V, IO=1A with component values shown on page 1 at room ambient temperature, unless otherwise
noted.
IO
(0.5A/DIV)
∆VO
(100mV/DIV)
IO
(0.5A/DIV)
∆VO
(100mV/DIV)
100µs/DIV
FIGURE 19. LOAD TRANSIENT RESPONSE (22mA to 1A)
50µs/DIV
FIGURE 20. PWM LOAD TRANSIENT RESPONSE (0A TO 1A)
IO
(0.5A/DIV)
∆VO
(100mV/DIV)
50µs/DIV
FIGURE 21. PWM LOAD TRANSIENT RESPONSE (0.25A TO
0.75A)
IO=50mA
SYNC
(2V/DIV)
LX
(2V/DIV)
2µs/DIV
FIGURE 23. PFM-PWM TRANSITION TIME
7
IO=150mA
SYNC
(2V/DIV)
LX
(2V/DIV)
2µs/DIV
FIGURE 22. PFM-PWM TRANSITION TIME
3
2
1
0
-1
PFM
-2
PWM
-3
0
200 400 600 800 1000 1200
IOUT (mA)
FIGURE 24. PFM-PWM LOAD REGULATION
FN7428.6
August 5, 2005
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