EL7563CM Datasheet

  • EL7563CM

  • Monolithic 4 Amp DC/DC Step-Down Regulator

  • 644.44KB

  • 16页

  • INTERSIL

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EL7563
Typical Performance Curves (20 Pin SO Package)
(Continued)
NOTE: The 28-Pin HTSSOP Package Offers Improved Performance
JUNCTION TEMPERATURE RISE (掳C)
60
50
40
30
20
10
0
500 LPF
0
1
2
I
O
(A)
3
4
NO AIRFLOW
T
J
RISE
200 LFM
100 LFM
45
40
35
30
25
20
15
10
5
0
1
1.5
2
2.5
I
O
(A)
3
3.5
4
FIGURE 9. EL7563CM JUNCTION TEMPERATURE RISE ON
DEMO BOARD
FIGURE 10. EL7563CRE JUNCTION TEMPERATURE RISE
ON DEMO BOARD - NO AIR FLOW
360
OSCILLATOR FREQUENCY (kHz)
350
340
330
320
310
300
290
280
-40
-20
0
20
40
60
80
I
O
=0A
I
O
=4A
F
S
(kHz)
1000
900
800
700
600
500
400
300
200
100
100
200
300
400
500
600
700
800
900 1000
TEMPERATURE (掳C)
C
OSC
(pF)
FIGURE 11. SWITCHING FREQUENCY vs TEMPERATURE
FIGURE 12. SWITCHING FREQUENCY vs C
OSC
8
1.5
7
V
IN
=3.6V
V
IN
=3V
V
IN
=3.3V
VTJ
1.1
4
0.9
-20
0
20
40
T
J
(掳C)
60
80
100
120
0
25
50
75
100
125
150
JUNCTION TEMPERATURE (掳C)
1.3
I
LMT
(A)
6
5
3
-40
FIGURE 13. CURRENT LIMIT vs T
J
FIGURE 14. VTJ vs JUNCTION TEMPERATURE
7
FN7296.2
May 13, 2005

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