SC4539ULTRT Semtech, SC4539ULTRT Datasheet - Page 5

• Manufacturer Part Number: SC4539ULTRT
• Description: TVS
• Manufacturer: Semtech

Specifications of SC4539ULTRT

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Typical Characteristics
All data taken with V
100
90
86
82
78
74
70
90
86
82
78
74
70
80
60
40
20
0
2.8
2.8
0
5.5V
IN
3.3
OUT
3.3
6
Effi ciency vs. Input Voltage
Effi ciency vs. Input Voltage
= 20V (6 white LEDs), R
10mA
V
OUT
Effi ciency vs. I
3.9
3.9
12
20mA
I
BL
V
V
(mA)
IN
IN
(V)
(V)
4.4
4.4
18
30mA
ISET
3.6V
BL
LED
= 5.76kΩ (I
IN
5.0
5.0
24
2.8V
BL
IN
= 20mA), V
30
5.5
5.5
IN
= 3.6V, L = 22μH, and effi ciency (η) = P
-2.0
-4.0
-6.0
90
86
82
78
74
70
6.0
4.0
2.0
0.0
90
86
82
78
74
70
2.8
0
0
Normalized I
3.3
Effi ciency vs. Output Voltage
5
5
Effi ciency vs. Input Voltage
3.9
10
10
5.5V
BL
V
4 LED
V
6 LED
vs. Output Voltage
OUT
V
OUT
IN
LED
IN
(V)
(V)
/P
(V)
IN
4.4
15
unless otherwise noted.
15
3.3V
IN
SC4539
5.0
20
20
2.8V
5.5
IN
25
25
5