el7530 Intersil Corporation, el7530 Datasheet - Page 7

• Manufacturer Part Number: el7530
• Description: Monolithic 600ma Step-down Regulator With Low Quiescent Current
• Manufacturer: Intersil Corporation

Performance Curves and Waveforms
All waveforms are taken at V
otherwise noted.
FIGURE 18. PWM LOAD TRANSIENT RESPONSE (100mA TO
FIGURE 20. LOAD REGULATION (PWM MODE)
-0.2
-0.6
0.6
0.2
FIGURE 22. PFM-PWM TRANSITION TIME
1
0
0
I
O
500mA)
=150mA
200
400
IN
50µs/DIV
2µs/DIV
= 3.3V, V
I
7
O
600
(mA)
O
800
= 1.8V, I
12MHz
1.4MHz
1K
O
5MHz
= 600mA with component values shown on page 1 at room ambient temperature, unless
∆V
(50mV/DIV)
I
(200mA/DIV)
O
1.2K
SYNC
(2V/DIV)
LX
(2V/DIV)
O
(Continued)
EL7530
FIGURE 21. LINE REGULATION @ 500mA (PWM MODE)
100
FIGURE 19. EFFICIENCY vs I
-0.1
-0.3
-0.5
80
60
40
20
0.5
0.3
0.1
FIGURE 23. PFM-PWM TRANSITION TIME
0
0
0
I
O
1.4MHz
=50mA
200
200
400
400
2µs/DIV
I
O
V
600
(mA)
IN
600
(V)
5MHz
O
800
12MHz
800
(PWM MODE)
1.4MHz
1K
5MHz
12MHz
1K
1.2K
1.2K
SYNC
(2V/DIV)
LX
(2V/DIV)
July 12, 2006
FN7434.6