RT5771A
Typical Operating Characteristics
Efficiency vs. Output Current
100
90
80
1.06
1.07
Output Voltage vs. Output Current
Efficiency (%)
70
60
50
40
30
20
10
0
0
Output Voltage (V)
V
IN
= 5V, V
OUT
= 3.3V
V
IN
= 3.3V, V
OUT
= 1.05V
V
IN
= 5V, V
OUT
= 1.05V
1.05
1.04
1.03
1.02
V
IN
= 5V
V
IN
= 3.3V
I
OUT
= 0A to 3A
1.01
0.5
1
1.5
2
2.5
3
0
0.5
1
V
OUT
= 1.05V, I
OUT
= 0A to 3A
1.5
2
2.5
3
Output Current (A)
Output Current (A)
Output Voltage vs. Output Current
3.32
3.31
1.4
Switching Frequency vs. Temperature
Switching Frequency (MHz)
1
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
-50
-25
0
25
Output Voltage (V)
3.30
3.29
3.28
3.27
V
IN
= 3.3V
V
IN
= 5V
V
IN
= 5V, V
OUT
= 3.3V, I
OUT
= 0A to 3A
3.26
0
0.5
1
1.5
2
2.5
3
V
OUT
= 1.05V, I
OUT
= 0.6A
50
75
100
125
Output Current (A)
Temperature (°C)
Switching Frequency vs. Temperature
1.4
0.65
0.64
Reference Voltage vs. Temperature
Switching Frequency (MHz)
1
1.3
Reference Voltage (V)
V
IN
= 5V, V
OUT
= 3.3V, I
OUT
= 0.6A
-50
-25
0
25
50
75
100
125
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.63
0.62
0.61
0.60
0.59
0.58
0.57
0.56
0.55
-50
-25
0
25
50
75
100
125
I
OUT
= 0.6A
Temperature (°C)
Temperature (°C)
Copyright
©
2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
6
DS5771A-02 June 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
