RT8228A
7
RT8228A-06 January 2014 www.richtek.com
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Copyright 2014 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
Typical Operating Characteristics
Efficiency vs. Load Current
0
10
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1 1 10
Load Current (A)
Efficiency (%)
V
IN
= 8V, V
OUT
= 1V
DEM Mode
CCM Mode
Efficiency vs. Load Current
0
10
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1 1 10
Load Current (A)
Efficiency (%)
V
IN
= 12V, V
OUT
= 1V
DEM Mode
CCM Mode
Ω
Switching Frequency vs. Input Voltage
0
50
100
150
200
250
300
350
400
450
500
6 8 10 12 14 16 18 20 22 24 26
Input Voltage (V)
Switching Frequency (kHz) 1
CCM Mode, V
OUT
= 1V, No Load
Switching Frequency vs. Load Current
0
50
100
150
200
250
300
350
400
0.001 0.01 0.1 1 10
Load Current (A)
Switching Frequency (kHz) 1
V
IN
= 12V, V
OUT
= 1V
DEM Mode
CCM Mode
Switching Frequency vs. R
TON
Resistance
0
100
200
300
400
500
600
700
800
900
100 200 300 400 500 600 700 800
R
TON
Resistance (k )
Switching Frequency (kHz) 1
CCM Mode, V
IN
= 12V, V
OUT
= 1V, No Load
Efficiency vs. Load Current
0
10
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1 1 10
Load Current (A)
Efficiency (%)
V
IN
= 20V, V
OUT
= 1V
DEM Mode
CCM Mode
