RT2855A/B
Typical Operating Characteristics
Output Voltage vs. Output Current
Efficiency vs. Output Current
1.10
1.09
1.08
1.07
1.06
1.05
1.04
1.03
1.02
1.01
1.00
100
90
80
70
60
50
40
30
20
10
0
VIN = 5V
VIN = 12V
VIN = 18V
VIN = 18V
VIN = 12V
VIN = 5V
RT2855A, VOUT = 1.05V
VOUT = 1.05V
0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0
Output Current (A)
0.001
0.01
0.1
1
10
Output Current (A)
Feedback Voltage vs. Input Voltage
Feedback Voltage vs. Temperature
0.780
0.775
0.770
0.765
0.760
0.755
0.750
0.745
0.740
0.80
0.79
0.78
0.77
0.76
0.75
0.74
0.73
0.72
0.71
0.70
VIN = 12V, VOUT = 0.765V, IOUT = 0.6A
VIN = 12V, VOUT = 0.765V, IOUT = 0.6A
4
6
8
10
12
14
16
18
-50
-25
0
25
50
75
100
125
Input Voltage (V)
Temperature (°C)
Shutdown Current vs. Temperature
Quiescent Current vs. Temperature
30
25
20
15
10
5
1000
950
900
850
800
750
700
650
600
VIN = 12V, VOUT = 1.05V, IOUT = 0A
VIN = 12V, VOUT = 1.05V, IOUT = 0A
0
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
Temperature (°C)
Temperature (°C)
Copyright 2015 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS2855A/B-01 September 2015
www.richtek.com
11
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
