RT8280 RICHTEK [Richtek Technology Corporation], RT8280 Datasheet - Page 6

• Manufacturer Part Number: RT8280
• Description: 3A, 24V, 3MHz Step-Down Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT8280
Typical Operating Characteristics
Copyright
www.richtek.com
6
0.810
0.805
0.800
0.795
0.790
0.785
0.780
5.30
5.25
5.20
5.15
5.10
5.05
5.00
4.95
4.90
4.85
4.80
4.75
4.70
©
100
90
80
70
60
50
40
30
20
10
2012 Richtek Technology Corporation. All rights reserved.
0
0.0
-50
0.0
Reference Voltage vs. Temperature
Output Voltage vs. Output Current
-25
Efficiency vs. Output Current
0.5
0.5
V
0
IN
1.0
Temperature (°C)
1.0
Output Current (A)
Output Current (A)
= 12V, V
25
1.5
1.5
OUT
50
= 3.3V, f
V
IN
2.0
2.0
= 12V, I
V
V
IN
75
IN
SW
= 19V
= 12V
= 2.2MHz
2.5
OUT
2.5
100
= 0A
3.0
125
3.0
is a registered trademark of Richtek Technology Corporation.
3.35
3.34
3.33
3.32
3.31
3.30
3.29
0.90
0.85
0.80
0.75
0.70
0.65
0.60
100
90
80
70
60
50
40
30
20
10
0
0.0
-50
3
Quiescent Current vs. Temperature
Output Voltage vs. Input Voltage
-25
0.5
6
Efficiency vs. Output Current
9
0
1.0
Output Current (A)
Temperature (°C)
Input Voltage (V)
12
25
1.5
DS8280-02 March 2012
V
OUT
15
V
50
IN
= 5V, f
= 12V, R
2.0
18
75
V
SW
V
IN
IN
RT
= 2.2MHz
= 19V
2.5
= 12V
I
OUT
100
21
= Open
= 0A
3.0
125
24