RT6541A
Typical Operating Characteristics
Efficiency vs. Output Current
100
90
Switching Frequency vs. Output Current
800
V
CC
= V
EN
= 5V, VID = 1V
V
IN
=
V
IN
=
V
IN
=
V
IN
=
5V
7.4V
12V
20V
Switching Frequency (kHz)
1
700
600
500
400
300
200
100
0
0.001
Efficiency (%)
80
70
60
50
V
IN
=
V
IN
=
V
IN
=
V
IN
=
5V
7.4V
12V
20V
V
CC
= V
EN
= 5V, VID = 1V
40
0.001
0.01
0.1
1
10
0.01
0.1
1
10
Output Current (A)
Output Current (A)
Output Voltage vs. Output Current
1.06
200
180
Quiescent Current vs. Input Voltage
LPM = 1
Quiescent Current (µA)
1
1.04
160
140
120
100
80
60
40
20
0
5
10
Output Voltage (V)
1.02
1.00
V
IN
=
V
IN
=
V
IN
=
V
IN
=
20V
12V
7.4V
5V
LPM = 0
0.98
V
CC
= V
EN
= 5V, VID = 1V
0.96
0.001
0.01
0.1
1
10
V
CC
= V
EN
= 5V, No Switching
15
20
25
Output Current (A)
Input Voltage (V)
Shutdown Current vs. Input Voltage
6
Load Transient Response
V
IN
= 12V, V
CC
= V
EN
= 5V, V
OUT
= 1.05V,
I
LOAD
= 0A to 4.55A
Shutdown Current (µA)1
5
4
3
2
1
V
OUT
(40mV/Div)
I
LOAD
(5V/Div)
PHASE
(20V/Div)
LGATE
(50V/Div)
Time (500μs/Div)
V
CC
= 5V, V
EN
= 0V
0
5
10
15
20
25
Input Voltage (V)
Copyright
©
2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
8
DS6541A-02
September 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
