RT8206A/B
V
IN
6V to 25V
R14
3.9
C13
C1
10µF
RT8206A/B
UGATE2
R9
0
C12
10µF
Q2
Q4
10µF
26
24
6
VIN
C18
0.1µF
R8
0
BOOT2
C11
L2
R4 0
15
17
Q1
Q3
UGATE1
BOOT1
4
.7µH
0.1µF
V
OUT2
25
23
22
PHASE2
LGATE2
PGND
3.3V
0
R3
C17
220µF
R10
C14
C2
0.1µF
L1
6.8µH
V
OUT1
5V
16
18
PHASE1
LGATE1
R17
11.5k
30
32
1
C22
VOUT2
FB2
C3
220µF
R5
C4
C21
0.1µF
9
BYP
R18
10k
REF
C15
0.22µF
10
R6
VOUT1
100k
C5
0.1µF
13
D1
PV
CC
PGOOD1
R13
100k
C6
D2
D4
3
28
14
0.1µF
VCC
PGOOD2
EN1
PV
CC
C9
1µF
C7
0.1µF
5V Enable
D3
ON
27 3.3V En
able
EN2
OFF
LDO Control
C8
4
R11
ENLDO
ILIM1
V
IN
0.1µF
200k
20
R1
SECFB/NC
180k
12
31
R12
39k
CP
R2
180k
C19
R15
15k
C23
ILIM2
TON
11
19
FB1
2
C20
0.1µF
Frequency Con
trol
R7 0
R16
10k
PVCC
29
C16
1µF
PWM/DEM/Ultras
onic
SKIP
GND
7
21, Exposed Pad (33)
LDO
C10
4.7µF
Figure 2. Adjustable Voltage Regulator
DS8206A/B-03 December 2009
www.richtek.com
3
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
