RT8272 RICHTEK [Richtek Technology Corporation], RT8272 Datasheet - Page 6

• Manufacturer Part Number: RT8272
• Description: 3A, 24V, 1.2MHz Step-Down Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT8272
www.richtek.com
6
(50mV/Div)
V
(2A/Div)
OUT
I
OUT
6.2
5.8
5.4
5.0
4.6
4.2
3.8
3.4
3.0
5.0
4.8
4.6
4.4
4.2
4.0
3.8
3.6
3.4
3.2
3.0
-50
10
V
I
OUT
IN
= 12V, V
= 1.5A to 3A
-25
20
Current Limit vs. Duty Cycle
Load Transient Response
UVLO vs. Temperature
OUT
30
0
Temperature ( ° C)
Time (100μs/Div)
= 3.3V
Duty Cycle (%)
40
25
50
50
60
75
100
Rising
Falling
70
125
80
(100mV/Div)
V
(2A/Div)
OUT
I
OUT
1.40
1.30
1.20
1.10
1.00
0.90
0.80
0.70
0.60
0.50
0.40
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
-50
-50
V
I
OUT
IN
Quiescent Current vs. Temperature
Enable Threshold vs. Temperature
= 12V, V
= 0A to 3A
-25
-25
Load Transient Response
OUT
0
0
Temperature (°C)
Temperature ( ° C)
Time (100μs/Div)
= 3.3V
25
25
DS8272-02 March 2011
V
50
50
IN
= 12V, V
75
75
OUT
Rising
Falling
100
100
= 3.3V
125
125