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RT7255 Datasheet(PDF) 7 Page - Richtek Technology Corporation

Part # RT7255
Description  The RT7255 is a synchronous step-down
PDF  17 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT7255 Datasheet(HTML) 7 Page - Richtek Technology Corporation

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RT7255
Copyright © 2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS7255-00
June
2015
www.richtek.com
7
Typical Operating Characteristics
Efficiency vs. Load Current
0
10
20
30
40
50
60
70
80
90
100
0
0.3
0.6
0.9
1.2
1.5
Load Current (A)
VOUT = 1.2V
VIN = 5V
VIN = 9V
VIN = 12V
VIN = 17V
PWM
Efficiency vs. Load Current
0
10
20
30
40
50
60
70
80
90
100
0.01
0.1
1
10
Load Current (A)
PSM
VOUT = 1.2V
VIN = 5V
VIN = 9V
VIN = 12V
VIN = 17V
Referecnce Voltage vs. Input Voltage
0.590
0.593
0.595
0.598
0.600
0.603
0.605
0.608
0.610
4.5
6.5
8.5
10.5
12.5
14.5
16.5
18.5
Input Voltage(V)
VIN = 4.5V to 18V, VOUT = 1.2V, IOUT = 0A
PWM
Reference vs. Temperature
0.590
0.595
0.600
0.605
0.610
-50
-25
0
25
50
75
100
125
Temperature (°C)
VIN = 4.5V to 18V, VOUT = 1.2V, IOUT = 0A
PWM
VIN = 18V
VIN = 12V
VIN = 9V
VIN = 4.5V
Output Voltage vs. Load Current
1.190
1.198
1.206
1.214
1.222
1.230
0
0.3
0.6
0.9
1.2
1.5
Load Current (A)
PWM
VOUT = 1.2V
VIN = 9V
VIN = 5V
VIN = 4.5V
VIN = 17V
VIN = 12V
Output Voltage vs. Load Current
1.170
1.186
1.202
1.218
1.234
1.250
0
0.3
0.6
0.9
1.2
1.5
Load Current (A)
VOUT = 1.2V
VIN = 17V
VIN = 12V
VIN = 5V
PSM



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