RT8206A/B
Pin Configurations
(TOP VIEW)
32 31 30 29 28 27 26 25
32 31 30 29 28 27 26 25
24
23
22
21
20
19
18
17
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
REF
TON
VCC
ENLDO
NC
BOOT2
LGATE2
PGND
REF
TON
VCC
ENLDO
NC
BOOT2
LGATE2
PGND
GND
GND
GND
GND
SECFB
PVCC
NC
VIN
VIN
PVCC
LGATE1
BOOT1
LDO
NC
33
LGATE1
BOOT1
LDO
NC
33
9
10 11 12 13 14 15 16
9
10 11 12 13 14 15 16
WQFN-32L 5x5
RT8206A
WQFN-32L 5x5
RT8206B
Typical Application Circuit
V
IN
6V to 25V
R14
3.9
C13
10µF
C1
10µF
RT8206A/B
R9
C12
10µF
0
Q2
26
24
6
UGATE2
VIN
C18
0.1µF
R8
0
BOOT2
C11
L2
R4 0
4.7µH
0.1µF
15
17
Q1
Q3
V
OUT2
UGATE1
BOOT1
25
23
22
PHASE2
LGATE2
PGND
3.3V
R3 0
Q4
C17
220µF
R10
C2
L1
8µH
C14
0.1µF
6.
V
OUT1
5V
16
18
PHASE1
LGATE1
30
1
VOUT2
REF
C3
220µF
R5
C4
C15
0.22µF
R6
100k
9
BYP
13
PV
PV
PGOOD1
PGOOD2
CC
10
VOUT1
R13
100k
C5
0.1µF
D1
D3
28
14
CC
C6
0.1µF
D2
D4
3
5V Enable
ON
VCC
EN1
EN2
C9
1µF
C7
27 3.3V E
nable
OFF
0.1µF
LDO Control
4
V
IN
C8
0.1µF
ENLDO
ILIM1
R1
180k
12
31
R11
200k
20
R2
180k
SECFB/NC
R12
39k
11
32
ILIM2
TON
FB1
FB2
2
CP
C19
Frequency Co
ntrol
29
PWM/DEM/Ultra
sonic
SKIP
GND
R7 0
19
7
PVCC
LDO
C16
1µF
21, Exposed Pad (33)
C10
4.7µF
Figure 1. Fixed Voltage Regulator
www.richtek.com
2
DS8206A/B-03 December 2009
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
