rt8070 Richtek Technology Corporation, rt8070 Datasheet - Page 6

• Manufacturer Part Number: rt8070
• Description: 4a, 2mhz, Synchronous Step-down Converter
• Manufacturer: Richtek Technology Corporation

RT8070
Typical Operating Characteristics
www.richtek.com
6
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
0.94
100
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
90
80
70
60
50
40
30
20
10
0
-50
-50
0
Switching Frequency vs. Temperature
0.5
-25
-25
Efficiency vs. Output Current
V
IN
1
V
UVLO vs. Temperature
IN
0
0
= 5V, V
Output Current (A)
V
R
Temperature (°C)
Temperature (°C)
IN
RT
1.5
= 5V, V
= 330kΩ
25
25
OUT
2
Rising
Falling
= 1.1V, I
OUT
50
50
= 1.1V, I
2.5
OUT
75
75
3
OUT
= 0A to 4A
100
100
= 0.6A,
3.5
125
125
4
1.130
1.125
1.120
1.115
1.110
1.105
1.100
1.095
1.090
1.085
1.080
1.075
1.070
0.84
0.83
0.82
0.81
0.80
0.79
0.78
0.77
0.76
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
-50
-50
0
Reference Voltage vs. Temperature
Output Voltage vs. Output Current
0.5
Enable Voltage vs. Temperature
-25
-25
1
V
0
0
IN
Output Current (A)
Temperature (°C)
Temperature (°C)
= 5V, V
1.5
25
25
DS8070-03 March 2011
OUT
2
50
= 1.1V, I
50
V
IN
2.5
Rising
Falling
= 5V, V
75
75
OUT
3
OUT
= 0A to 4A
100
100
3.5
= 1.1V
125
125
4