DL6543A/B
RT6543A/B
Typical Application Circuit
1
RT6543A/B
CS_DIS
VSYS
0.1µF
0.1µF
0.22µH
C
OUT
V
OUT
20
VSYS
10
BOOT
11
12
13
14
100
820P 16.9k 0.22µF 1.4k
15P
16.9k
AUX_VSSSENSE
100
AUX_SENSE
5V
2.2
1µF
15
UGATE
PVCC
PH
LGATE
PGND
5V
2.2
1µF
16
10k
4
19
18
17
9
VCC
PGOOD
EN
VID0
VID1
FSWSEL
2
ISENSEP
3
ISENSEN
8
VOUT
COMP
5
EN
VID0
VID1
Refer to Table 1
FSWSEL
FSWSEL set up
FB 6
7
RGND
AGND
21 (Exposed pad)
C
OUT
ICL
TGL
C
OUT
type : 22F/6.3V
Y-Line (PCS)
17
19
U-Line (PCS)
22
20
Table 1. FSWSEL set up
FSWSEL
High (>4.5V)
Floating (2~3V)
Low (<0.4V)
Frequency setting
800kHz
600kHz
400kHz
Suggestion
Connect to VCC
Floating
Connect to GND
Copyright
©
2020 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS6543A/B-01 March 2020
www.richtek.com
9
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
