EL7530IY(2004) Ver la hoja de datos (PDF) - Intersil

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EL7530IY
(Rev.:2004)

Monolithic 600mA Step-Down Regulator with Low Quiescent Current

Intersil 

EL7530

Performance Curves and Waveforms (Continued)

All waveforms are taken at VIN=3.3V, VO=1.8V, IO=600mA with component values shown on page 1 at room ambient temperature, unless

otherwise noted.

IO

(200mA/DIV)

∆VO

(50mV/DIV)

50µs/DIV

FIGURE 18. PWM LOAD TRANSIENT RESPONSE (100mA TO

500mA)

100

1.4MHz

80

5MHz

12MHz

60

40

20

0

0

200 400 600 800 1K 1.2K

IO (mA)

FIGURE 19. EFFICIENCY vs IO (PWM MODE)

1

12MHz

0.6

1.4MHz

0.2

5MHz

0

-0.2

-0.6

0

200 400 600 800

IO (mA)

1K 1.2K

FIGURE 20. LOAD REGULATION (PWM MODE)

0.5

0.3

0.1

1.4MHz

-0.1

12MHz

-0.3

5MHz

-0.5

0

200 400 600 800

VIN (V)

1K 1.2K

FIGURE 21. LINE REGULATION @ 500mA (PWM MODE)

IO=150mA

SYNC

(2V/DIV)

LX

(2V/DIV)

IO=50mA

SYNC

(2V/DIV)

LX

(2V/DIV)

2µs/DIV

FIGURE 22. PFM-PWM TRANSITION TIME

2µs/DIV

FIGURE 23. PFM-PWM TRANSITION TIME

7

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