rt8020 Richtek Technology Corporation, rt8020 Datasheet - Page 7

• Manufacturer Part Number: rt8020
• Description: Dual High-efficiency Step-down Dc-dc Converter
• Manufacturer: Richtek Technology Corporation

DS8020-03 August 2007
1.230
1.225
1.220
1.215
1.210
1.205
1.200
1.195
1.190
1.185
1.180
1.60
1.55
1.50
1.45
1.40
1.35
1.30
1.25
1.20
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
2.5
2.5
0
Output Current Limit vs. Input Voltage
Switching Frequency vs. Input Voltage
Output Voltage vs. Loading Current
2.8
2.8
0.1
3.1
3.1
0.2
V
3.4
3.4
0.3
IN
Loading Current (A)
Input Voltage (V)
Input Voltage (V)
= 3.6V, V
3.7
3.7
0.4
V
V
IN
IN
0.5
4
4
= 5.0V
= 3.6V
OUT
V
OUT
4.3
0.6
4.3
= 1.2V, I
= 1.2V @ T
4.6
4.6
0.7
OUT
4.9
0.8
4.9
= 300mA
A
= 25 C
5.2
5.2
0.9
5.5
5.5
1
1.25
1.24
1.23
1.22
1.21
1.20
1.19
1.18
1.17
1.16
1.15
1.55
1.45
1.35
1.25
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.6
1.5
1.4
1.3
1.2
-40 -25 -10
-40 -25 -10
-40 -25 -10
Switching Frequency vs. Temperature
Output Current Limit vs. Temperature
Output Voltage vs. Temperature
V
V
IN
IN
= 3.6V
= 3.3V
V
5
5
5
Temperature
Temperature
Temperature
IN
V
IN
= 3.6V, V
20
20
20
= 5.0V
35
35
35
OUT
50
50
50
( C)
( C)
( C)
= 1.2V, I
V
65
65
65
RT8020
IN
www.richtek.com
= 3.6V, I
80
80
80
OUT
V
OUT
95 110 125
95 110 125
95 110 125
= 300mA
OUT
= 1.2V
= 0A
7