EUP2624
Typical Operating Characteristics
620kHz Efficiency vs. Load Current
95
90
85
80
620kHz Switching Frequency vs. Temperature
630
V
OUT
=8V
V
IN
=5.5V
SWITCHING FREQUENCY (kHA)
620
610
600
590
580
570
560
550
-40 -30 -20 -10
EFFICIENCY (%)
75
70
65
60
55
50
45
40
35
30
1
10
100
V
IN
=3V
V
IN
=2.5V
V
IN
=5.5V
V
IN
=2.5V
1000
0
10
20
30
40
0
50
60
70
80
90
LOAD CURRENT (mA)
TEMPERATURE( C)
FSLCT Pin Current vs. FSLCT Pin Voltage
6.6
Switching Current Limit vs. Temperature
3.2
FSLCT PIN CURRENT(uA)
6.4
6.2
V
OUT
=8V
3.0
CURRENT LIMIT (A)
6.0
T=-40 C
5.8
0
2.8
V
IN
=5.5V
T=25 C
5.6
5.4
5.2
0
2.6
2.4
T=85 C
0
2.2
V
IN
=3V
V
IN
=2.5V
0
10
20
30
40
0
2.0
5.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-40 -30 -20 -10
50
60
70
80
90
FSLCT VOLTAGE(V)
TEMPERATURE( C)
2.50
620kHz Switching I
Q
vs. Temperature
4.00
3.75
1.25MHz Switching I
Q
vs. Temperature
2.25
SWITCHING I
Q
(mA)
V
IN
=5.5V
3.50
V
IN
=5.5V
SWITCHING I
Q
(mA)
V
IN
=2.5V
2.00
3.25
3.00
2.75
2.50
2.25
2.00
1.75
1.75
1.50
1.25
V
IN
=2.5V
1.00
-40
-30
-20
-10
0
10
20
30
40
0
50
60
70
80
90
1.50
-40
-30
-20
-10
0
10
20
30
40
0
50
60
70
80
90
TEMPERATURE( C)
TEMPERATURE( C)
DS2624 Ver1.0
July .2006
5
EUTECH [ EUTECH MICROELECTRONICS INC ]
