RT8268 RICHTEK [Richtek Technology Corporation], RT8268 Datasheet - Page 6

• Manufacturer Part Number: RT8268
• Description: 2A, 24V, 400kHz Step-Down Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT8268
Typical Operating Characteristics
www.richtek.com
6
0.930
0.925
0.920
0.915
0.910
0.905
0.900
0.75
0.70
0.65
0.60
0.55
0.50
0.45
100
90
80
70
60
50
40
30
20
10
0
-50
-50
0
Quiescent Current vs. Temperature
0.25
-25
-25
Efficiency vs. Load Current
V
0.5
REF
0
0
Load Current (A)
0.75
vs. Temperature
Temperature
Temperature
25
25
1
50
50
1.25
V
IN
(°C)
(°C)
= 12V, I
75
75
1.5
V
V
V
OUT
IN
IN
V
OUT
100
100
IN
1.75
= 12V
= 24V
= 3.3V
= 12V
= 0A
125
125
2
3.295
3.293
3.291
3.289
3.287
3.285
3.283
100
4.7
4.2
3.7
3.2
2.7
2.2
90
80
70
60
50
40
30
20
10
0
0
0
0
Output Voltage vs. Output Current
10
0.25
0.25
Current Limit vs. Duty Cycle
V
V
Efficiency vs. Load Current
IN
IN
20
= 24V
= 12V
0.5
0.5
30
Load Current (A)
Load Current (A)
0.75
Duty Cycle (%)
0.75
40
DS8268-02 March 2011
50
1
1
60
1.25
1.25
70
1.5
1.5
80
V
V
V
OUT
IN
IN
1.75
1.75
= 12V
= 24V
90
= 5V
100
2
2