RT9202CS ETC, RT9202CS Datasheet - Page 2

• Manufacturer Part Number: RT9202CS
• Description: SINGLE SYNCHRONOUS BUCK PWM DC-DC CONTROLLER
• Manufacturer: ETC

RT9202
Typical Application Circuit
www.richtek.com
2
SHDN
H: shutdown
H: shutdown
SHDN
Q1
2N7002
Q2
2N7002
C4
1µF
5
8
7
6
C4
1µF
8
7
6
5
PHASE
OCSET
FB
VCC
Fig.1 RT9202 powered from 5V only
Fig.2 RT9202 powered from 12V
PHASE
OCSET
FB
VCC
RT9202
RT9202
20K
R1
120
R3
UGATE
LGATE
20K
R1
BOOT
120
R3
UGATE
GND
LGATE
BOOT
GND
4
1
2
3
1
2
3
4
R4
10
10nF
250
R2
C6
V
2.5V
10nF
255
R2
OUT
C6
V
2.5V
C2
1µF
OUT
0.1µF
C2
R4
10
+
+
MA732
C3
1000µF
C3
1000µF
D1
5µH
5µH
L1
L2
MU
ML
MU
ML
DS9202-02 August 2002
C5
1µF
C5
1µF
12V
5V
5V
+
+
C1
470µF
C1
470µF