RT8289
Typical Operating Characteristics
Efficiency vs. Output Current
100
90
80
Output Voltage vs. Output Current
5.008
5.004
Output Voltage (V)
Efficiency (%)
70
60
50
40
30
20
10
0
0
V
IN
V
IN
V
IN
V
IN
=
=
=
=
8V
12V
24V
32V
5.000
4.996
4.992
4.988
4.984
V
IN
= 32V
V
IN
= 24V
V
IN
= 12V
V
OUT
= 5V
1
2
3
4
5
4.980
0
1
2
3
V
OUT
= 5V
4
5
Output Current (A)
Output Current (A)
Reference Voltage vs. Input Voltage
1.230
1.228
Reference Voltage vs. Temperature
1.230
1.228
Reference Voltage (V)
Reference Voltage (V)
1.226
1.224
1.222
1.220
1.218
1.216
1.214
1.212
1.210
4
8
12
16
20
24
1.226
1.224
1.222
1.220
1.218
1.216
1.214
1.212
1.210
V
IN
V
IN
V
IN
V
IN
=
=
=
=
8V
12V
24V
32V
I
OUT
= 0A
28
32
I
OUT
= 0A
-50
-25
0
25
50
75
100
125
Input Voltage (V)
Temperature (°C)
Frequency vs. Input Voltage
550
540
530
550
540
530
Frequency vs. Temperature
Frequency (kHz)1
520
510
500
490
480
470
460
450
4
8
12
16
Frequency (kHz)1
520
510
500
490
480
470
V
OUT
= 5V, I
OUT
= 0A
20
24
28
32
460
450
-50
-25
V
IN
V
IN
V
IN
V
IN
=
=
=
=
8V
12V
24V
32V
V
OUT
= 5V, I
OUT
= 0A
0
25
50
75
100
125
Input Voltage (V)
Temperature (°C)
DS8289-01 March 2011
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RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
