SC410 SEMTECH [Semtech Corporation], SC410 Datasheet - Page 8

• Manufacturer Part Number: SC410
• Description: 3A EcoSpeed TM Step-Down Regulator with LDO and Ultrasonic Power Save
• Manufacturer: SEMTECH [Semtech Corporation]

Typical Characteristics
Characteristics are based on a circuit with V
0.6
0.2
1.4
1.2
600
500
400
300
200
0.8
0.4
90
70
60
50
700
100
80
1
0
0
0.0
6
0.0
I
OUT
= 1.5A
V
V
IN
IN
= 12V
0.5
9
= 8V
Effi ciency — Power Loss
Switching Frequency
V
0.1
IN
12
V
V
1.0
On-Time vs. V
IN
IN
= 12V
V
= 8V
= 18V
IN
Input Voltage (V)
= 18V
I
I
OUT
OUT
V
15
1.5
IN
(A
(A
V
= 24V
DC
IN
DC
= 18V
)
)
V
IN
V
IN
IN
= 12V, L = 2.2μH (DCR = 35mΩ), C
IN
18
1.0
V
2.0
= 24V
= 24V
IN
= 12V
V
IN
Efficiency
= 8V
21
P
2.5
LOSS
3.0
24
10.0
1.0
4.0
3.0
2.0
0.0
OUT
-0.6
-1.2
-1.8
-2.4
0.15
0.13
0.05
0.03
0.20
0.18
0.10
0.08
0.00
-0.6
-1.2
-1.8
-2.4
1.8
1.2
0.6
0.6
1.8
1.2
0
0
= 66μF, V
0
0.0
6
I
OUT
V
IN
V
= 12V
= 1.5A
IN
= 18V
OUT
0.5
9
= 3.3V, V
V
V
V
IN
Switching Ripple
IN
IN
Line Regulation
Load Regulation
1.0
= 24V
12
= 8V
0.1
= 18V
LDO
V
IN
= 5V, R
Input Voltage (V)
= 12V
I
OUT
I
OUT
1.5
15
(A
TON
(A
DC
DC
)
= 90.9kΩ.
)
V
V
IN
IN
2.0
= 24V
= 8V
18
1.0
2.5
21
SC410
3.0
24
10.0
8