RT6343
300kHz, 3.3V, 3.5A Step-Down Converter
C
0.1µF
BOOT
RT6343GQW
V
IN
2
1
9
L1
VIN
BOOT
4.5V to 42V
10µH
V
OUT
C1
2.2µF
C2
2.2µF
SW
3.3V/3.5A
D1
SS5P6
R1
31.6k
3
C5
47µF
C6
47µF
EN
Enable Signal
PWRGD
10
6
4
FB
PGOOD
R
RT
R2
10k
332k
R3
4.99k
5
7
RT/SYNC
COMP
C3
SS/TR
C
SS
0.01µF
C4
270pF
10nF
GND
8
PAD
11 (Exposed pad)
f
= 300kHz
SW
L1 = VCHA075D-100MS6
C5/C6 = GRM32ER61C476KE15L
C1/C2 = HMK316AC7225KL-TE
400kHz, 5V, 3.5A Step-Down Converter
C
0.1µF
BOOT
RT6343GQW
V
2
1
9
IN
L1
10µH
VIN
BOOT
8V to 42V
V
OUT
C1
2.2µF
C2
2.2µF
SW
5V/3.5A
D1
SS5P6
R1
52.3k
3
C5
47µF
C6
47µF
EN
Enable Signal
PWRGD
10
6
4
FB
PGOOD
R
RT
R2
10k
249k
R3
10k
5
7
RT/SYNC
COMP
C3
SS/TR
C
SS
0.01µF
C4
8.2nF
GND
8
PAD
11 (Exposed pad)
100pF
f
= 400kHz
SW
L1 = VCHA075D-100MS6
C5/C6 = GRM32ER61C476KE15L
C1/C2 = HMK316AC7225KL-TE
400kHz, 12V, 3.5A Step-Down Converter
C
0.1µF
BOOT
RT6363GQW
V
2
1
9
IN
L1
22µH
VIN
BOOT
14V to 42V
V
OUT
C1
2.2µF
C2
2.2µF
SW
12V/3.5A
D1
SS5P6
R1
140k
3
C5
10µF
C6
10µF
C7
10µF
EN
Enable Signal
PWRGD
10
6
4
FB
PGOOD
R
RT
R2
10k
249k
R3
6.34k
5
7
RT/SYNC
COMP
C3
SS/TR
C
SS
0.01µF
C4
8.2nF
GND
8
PAD
11 (Exposed pad)
150pF
f
= 400kHz
SW
L1 = 7443551221
C6/C7/C8 = UMK325AB7106KM
C1/C2 = HMK316AC7225KL-TE
Copyright 2019 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS6343-00 October 2019
www.richtek.com
15
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
