RT2805A
Typical Operating Characteristics
Efficiency vs. Output Current
100
90
1.230
Reference Voltage vs. Input Voltage
Efficiency (%)
70
60
50
40
30
20
10
V
IN
= 12V
V
IN
= 32V
V
IN
= 36V
Reference Voltage (V)
V
OUT
= 5V
80
1.226
1.222
1.218
1.214
V
OUT
= 5V, I
OUT
= 0A
1.210
0
0
1
2
3
4
5
4
8
12
16
20
24
28
32
36
Output Current (A)
Input Voltage (V)
Reference Voltage vs. Temperature
1.230
1.228
5.008
5.004
5.000
Output Voltage vs. Output Current
Reference Voltage (V)
1.226
1.224
1.222
1.220
1.218
1.216
1.214
1.212
Output Voltage (V)
4.996
4.992
4.988
4.984
4.980
4.976
4.972
4.968
4.964
4.960
0
V
IN
= 36V
V
IN
= 24V
V
IN
= 12V
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
I
OUT
= 0A
1.210
-50
-25
0
25
50
75
100
125
V
OUT
= 5V
1
2
3
4
5
Temperature (°C)
Output Current (A)
Frequency vs. Input Voltage
540
530
520
540
530
520
Frequency vs. Temperature
Frequency (kHz)
Frequency (kHz)
510
500
490
480
470
460
450
440
4
8
12
16
20
24
28
32
36
510
500
490
480
470
460
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
V
OUT
= 5V
-50
-25
0
25
50
75
100
125
V
OUT
= 5V, I
OUT
= 0A
450
440
Input Voltage (V)
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
Temperature (°C)
is a registered trademark of Richtek Technology Corporation.
DS2805A-00 November 2012
www.richtek.com
7
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
