rt9202b Richtek Technology Corporation, rt9202b Datasheet - Page 2

• Manufacturer Part Number: rt9202b
• Description: Single Synchronous Buck Dc-dc Controller
• Manufacturer: Richtek Technology Corporation

RT9202B
Typical Application Circuit
www.richtek.com
2
H : shutdown
H : shutdown
SHND
SHND
2N7002
2N7002
Q1
Q1
5V
Figure 2. RT9202B powered from 12V and 5V
1uF
C4
1uF
C4
Figure 1. RT9202B powered from 5V only
8
7
6
5
8
7
6
5
PHASE
OCSET
FB
VCC
PHASE
OCSET
FB
VCC
RT9202B
RT9202B
20K
R1
20K
R1
UGATE
LGATE
UGATE
LGATE
BOOT
BOOT
GND
GND
120
R3
120
R3
R4 10
1
2
3
4
10nF
1
2
3
4
10nF
255
C6
R2
250
C6
R2
0.1uF
V
2.5V
V
2.5V
OUT
C2
OUT
1uF
C2
D1
MA732
1000uF
1000uF
C3
C3
5uH
5uH
L2
R4
10
L1
ML
MU
ML
MU
DS9202B-03 March 2007
1uF
C5
1uF
C5
12V
5V
5V
470uF
C1
470uF
C1