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