RT6220
Typical Operating Characteristics
Performance waveforms are tested on the evaluation board of the Typical Application Circuit, V
IN
= 12V, V
OUT
= 1V, L = 1μH,
T
J
= 25°C, unless otherwise noted.
Efficiency vs. Load Current
100
95
90
100
95
Efficiency vs. Load Current
Efficiency (%)
85
80
75
70
65
60
0.001
Efficiency (%)
90
85
80
75
70
0.001
V
IN
= 7.4V
V
IN
= 12V
V
IN
= 19V
V
IN
= 7.4V
V
IN
= 12V
V
IN
= 19V
V
OUT
= 1V, f
SW
= 500kHz,
L = 1μH, DCR = 3.3mΩ, EN = 2V
0.01
0.1
1
10
V
OUT
= 3.3V, f
SW
= 500kHz,
L = 2.2μH, DCR = 7mΩ, EN = 2V
0.01
0.1
1
10
Load Current (A)
Load Current (A)
Efficiency vs. Load Current
100
95
Switching Frequency vs. Load Current
600
Switching Frequency (kHz)
1
500
400
300
200
100
0
0.001
Efficiency (%)
90
85
80
75
70
0.001
V
IN
= 7.4V
V
IN
= 12V
V
IN
= 19V
V
BYP
= V
OUT
= 5V, f
SW
= 500kHz,
L = 2.2μH, DCR = 7mΩ, EN = 2V
0.01
0.1
1
10
V
IN
= 7.4V,
V
OUT
= 1V, EN = 2V
0.01
0.1
1
10
Load Current (A)
Load Current (A)
Switching Frequency vs. Load Current
600
600
Switching Frequency vs. Load Current
Switching Frequency (kHz)
1
Switching Frequency (kHz)
1
500
400
300
200
100
0
0.001
500
400
300
200
100
0
0.001
V
IN
= 12V,
V
OUT
= 1V, EN = 2V
0.01
0.1
1
10
V
IN
= 19V,
V
OUT
= 1V, EN = 2V
0.01
0.1
1
10
Load Current (A)
Copyright
©
2019 Richtek Technology Corporation. All rights reserved.
Load Current (A)
is a registered trademark of Richtek Technology Corporation.
DS6220-10
December 2019
www.richtek.com
9
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
