RT7285D
Typical Operating Characteristics
Efficiency vs. Load Current
100
90
80
100
90
80
Efficiency vs. Load Current
Efficiency (%)
70
60
50
40
30
20
10
0
0
0.3
0.6
0.9
1.2
1.5
V
IN
=
V
IN
=
V
IN
=
V
IN
=
5V
9V
12V
18V
Efficiency (%)
70
60
50
40
30
20
V
IN
= 12V
V
IN
= 15V
V
IN
= 18V
V
OUT
= 1.2V
10
0
0
0.3
0.6
0.9
V
OUT
= 5V
1.2
1.5
Load Current (A)
Load Current (A)
Reference Voltage vs. Input Voltage
0.610
0.610
Reference Voltage vs. Temperature
Reference Voltage (V)
Reference Voltage (V)
V
IN
= 4.5V to 18V, V
OUT
= 1.2V, I
OUT
= 0V
0.605
0.605
0.600
0.600
0.595
0.595
V
IN
= 12V, I
OUT
= 0A
0.590
-50
-25
0
25
50
75
100
125
0.590
4.5
6.5
8.5
10.5
12.5
14.5
16.5
18.5
Input Voltage (V)
Temperature (°C)
Output Voltage vs. Load Current
1.230
600
Switching Frequency vs. Input Voltage
Switching Frequency (kHz)
1
1.226
1.222
Output Voltage (V)
1.218
1.214
1.210
1.206
1.202
1.198
1.194
1.190
0
0.3
V
IN
= 18V
V
IN
= 12V
V
IN
= 9V
V
IN
= 5V
V
IN
= 4.5V
580
560
540
520
V
IN
= 4.5V to 18V, V
OUT
= 1.2V
500
0.6
0.9
1.2
1.5
4
6
8
10
V
OUT
= 1.2V, I
OUT
= 0A
12
14
16
18
Load Current (A)
Input Voltage (V)
Copyright
©
2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
6
DS7285D-04 March 2018
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
