RT7237A データシートの表示（PDF） - Richtek Technology
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RT7237A Datasheet PDF : 15 Pages
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Typical Operating Characteristics
100
90
80
70
60
50
40
30
20
10
0
0.01
Efficiency vs. Output Current
VIN = 4.5V
VIN = 12V
VIN = 17V
VOUT = 3.3V
0.1
1
10
Output Current (A)
Reference Voltage vs. Temperature
0.85
0.84
0.83
0.82
0.81
VIN = 4.5V
VIN = 12V
VIN = 17V
0.80
0.79
0.78
0.77
0.76
0.75
-50 -25
VOUT = 3.3V, IOUT = 1A
0
25 50 75 100 125
Temperature (°C)
Switching Frequency vs. Input Voltage
380
370
360
350
340
330
320
310
IOUT = 0.5A
300
4
6
8
10 12 14 16 18
Input Voltage (V)
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS7237A-01 September 2012
RT7237A
3.320
3.315
3.310
3.305
3.300
3.295
3.290
3.285
3.280
4
Output Voltage vs. Input Voltage
VOUT = 3.3V, IOUT = 1A
6
8
10 12 14 16 18
Input Voltage (V)
Output Voltage vs. Output Current
3.38
3.36
3.34
3.32
3.30
VIN = 4.5V
VIN = 12V
VIN = 17V
3.28
3.26
3.24
3.22
0
RT7237AH, VOUT = 3.3V
0.25 0.5 0.75 1 1.25 1.5 1.75 2
Output Current (A)
Switching Frequency vs. Temperature
380
370
360
VIN = 4.5V
350
VIN = 12V
VIN = 17V
340
330
320
310
300
-50 -25
IOUT = 0.5A
0
25 50 75
Temperature (°C)
100 125
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