RT5112A
Typical Operating Characteristics
Shutdown Current vs. Temperature
Buck1 Quiescent Current vs. Input Voltage
12
1.0
11
10
9
0.8
0.6
0.4
0.2
8
7
VBUCK1 = 1.1V, Temperature = 25°C
HWEN = L
100 125
6
0.0
2.5
3.0
3.5
4.0
4.5
-50
-25
0
25
50
75
Temperature (°C)
Input Voltage (V)
Buck1 Quiescent Current vs. Temperature
Buck1 Efficiency
12
100
90
80
70
60
50
11
10
9
VINB1 = 3.4V
VINB1 = 3.8V
VINB1 = 4.35V
8
7
VINB1 = 3.8V, VBUCK1 = 1.1V
VBUCK1 = 1.1V
0.8 1.0 1.2
6
-50
-25
0
25
50
75
100
125
0.0
0.2
0.4
0.6
Temperature (°C)
Load Current (A)
Buck1 Load Regulation
Buck1 Output Voltage Ripple vs. Load Current
1.13
1.12
1.11
1.10
1.09
1.08
30
25
VINB1 = 4.35V
VINB1 = 3.8V
VINB1 = 3.4V
20
15
10
5
VINB1 = 4.35V
VINB1 = 3.8V
VINB1 = 3.4V
VBUCK1 = 1.1V
1.0
VBUCK1 = 1.1V
0.8 1.0 1.2
0
0.0
0.2
0.4
0.6
0.8
1.2
0.0
0.2
0.4
0.6
Load Current (A)
Load Current (A)
Copyright 2019 Richtek Technology Corporation. All rights reserved.
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is a registered trademark of Richtek Technology Corporation.
www.richtek.com
14
DS5112A-02 August 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
