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RT9232 Datasheet(PDF) 2 Page - Richtek Technology Corporation

Part No. RT9232
Description  Programmable Frequency Synchronous Buck PWM Controller
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Maker  RICHTEK [Richtek Technology Corporation]
Homepage  http://www.richtek.com
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RT9232 Datasheet(HTML) 2 Page - Richtek Technology Corporation

 
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RT9232
2
DS9232-06 March 2007
www.richtek.com
Typical Application Circuit
Functional Pin Description
No
Pin Name
Pin Function
1
RT
Oscillator Frequency Setting
2
SENSE
Sense VIN Power Condition
3
SS
Soft Start Time Interval Setting
4
COMP
Feedback Compensation
5
FB
Voltage Feedback
6
EN
Chip Enable (Active High)
7
GND
IC Signal Reference Ground
8
PHASE
Return Path for Upper MOSFET
9
UGATE
Upper MOSFET Gate Drive
10
BOOT
Input Supply for Upper Gate Drive
11
PGND
Power Ground
12
LGATE
Lower MOSFET Gate Drive
13
PVCC
Input Supply for Lower Gate Drive
14
VCC
Internal IC Supply (12V Bias)
VCC
PVCC
SS
RT
SENSE
UGATE
PHASE
RT9232
14
2
9
8
1
3
13
EN
GND
COMP
LGATE
PGND
FB
12
11
5
4
7
6
BOOT
562
3.01k
0.1uF
10uF
2.2uH
1uH
3.3V - 12V
V
IN
V
OUT
CE1
1000uF
22uF
10
V
CC
1nF
IPD09N03LA
0
0
V
CC
10k
10nF
15k
1k
10nF
CE3
IPD06N03LA
0.1uF
2.2
2200uF
CE4
510uF
10uF 0.1uF
0.1uF
1000uF
CE2
+
CE0
470uF
1N4148
0.22uF
0.22uF
51k
33pF
1k
1nF
2.2
C
SS
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
D1
Q1
Q2
L1
L2


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