RT7231/32/33/34
Typical Operating Characteristics
Efficiency vs. Output Current
Efficiency vs. Output Current
100
100
90
80
70
60
50
40
30
20
10
0
RT7231/33
90
RT7232/34
80
70
VIN = 5V
VIN = 12V
VIN = 18V
VIN = 5V
VIN = 12V
VIN = 18V
60
50
40
30
20
10
VOUT = 1.05V
VOUT = 1.05V
1 10
0
0.001
0.01
0.1
0.001
0.01
0.1
1
10
18
4
Output Current (A)
Output Current (A)
Output Voltage vs. Input Voltage
Feedback Threshold Voltage vs. Temperature
1.060
0.780
1.058
1.056
1.054
1.052
1.050
1.048
1.046
1.044
1.042
1.040
0.775
0.770
0.765
0.760
0.755
VIN = 4.5V to 18V, VOUT = 1.05V
VIN = 12V, VOUT = 1.05V, IOUT = 0A
0.750
4
6
8
10
12
14
16
-50
-25
0
25
50
75
100
125
Input Voltage (V)
Temperature (°C)
Output Voltage vs. Output Current
Output Voltage 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
1.10
1.09
1.08
1.07
1.06
1.05
1.04
1.03
1.02
1.01
1.00
RT7231/33
RT7232/34
VIN = 18V
VIN = 12V
VIN = 5V
VIN = 18V
VIN = 12V
VIN = 5V
VOUT = 1.05V
VOUT = 1.05V
3.5 4
0
0.5
1
1.5
2
2.5
3
3.5
0
0.5
1
1.5
2
2.5
3
Output Current (A)
Output Current (A)
Copyright 2013 Richtek Technology Corporation. All rights reserved.
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is a registered trademark of Richtek Technology Corporation.
www.richtek.com
8
DS7231/32/33/34-00 March 2013
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
