RT7257D
Typical Operating Characteristics
Efficiency vs. Output Current
Output Voltage vs. Input Voltage
100
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.26
90
80
VIN = 12V
VIN = 17V
70
60
50
40
30
20
10
0
VOUT = 3.3V
10
VIN = 4.5V to 17V, VOUT = 3.3V, IOUT = 0.5A
0.01
0.1
1
4
6
8
10
12
14
16
18
Output Current (A)
Input Voltage (V)
Output Voltage vs. Temperature
Output Voltage vs. Output Current
3.34
3.400
3.375
3.350
3.325
3.300
3.275
3.250
3.225
3.200
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.26
VIN = 6V
VIN = 12V
VIN = 17V
VIN = 12V, VOUT = 3.3V, IOUT = 0.5A
25 50 75 100 125
VOUT = 3.3V
-50
-25
0
0
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7
Output Current (A)
3
Temperature (°C)
Switching Frequency vs. Input Voltage
Switching Frequency vs. Temperature
1.5
1.4
1.3
1.2
1.1
1.0
1.50
1.45
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
VIN = 4.5V
VIN = 12V
VIN = 17V
VOUT = 3.3V, IOUT = 0.3A
VOUT = 3.3V, IOUT = 0.3A
4.5
7
9.5
12
14.5
17
-50
-25
0
25
50
75
100
125
Input Voltage (V)
Temperature ( C)
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6
DS7257D-05 October 2016
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
