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RT9228GS Datasheet(PDF) 2 Page - Richtek Technology Corporation

Part # RT9228GS
Description  Advanced PWM and Dual Fixed Linear Power Controller
PDF  8 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9228GS Datasheet(HTML) 2 Page - Richtek Technology Corporation

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RT9228
2
DS9228-06
March 2007
www.richtek.com
Typical Application Circuit
Function Block Diagram
VIN2
GATE3
FB3
VOUT2
OSET1
PGOOD
UGATE1
PHASE2
RT9228
12
20
7
24
23
13
16
15
VID1
VID2
VID3
VID4
5
2
3
4
VID0
6
FB2
11
LGATE1
PGND
VSEN1
FB1
22
21
19
18
FAULT
SS
8
9
GND
VCC
1
14
C12
0.039uF
C1-4
4 x 1000uF
C20
1uF
R1
10
C5-6
2 x 1uF
1uH
L1
12V
15A
V
OUT3
RFD3055
Q3
C8
1000uF
C9
1000uF
C10
270uF
Q1
PHB95N03LT
Q2
PHB83N03LT
C7
1000pF
R2
1.21K
L2
3.5uH
R3
10K
R4
4.99K
C11
0.68uF
R5
732K
C13-19
7 x 1000uF
F1
5V
GND
1.5V
V
OUT2
2.5V
3.3V
POWERGOOD
V
OUT1
1.3V to 3.5V
+
-
+
-
+
-
+
-
+
-
+
-
Gate
Control
Logic
Power-On
Reset (POR)
FB2
TTL D/A
Converter
(DAC)
PWM
Oscillator
PWM
Comparator
Over Voltage
VCC
110%
90%
115%
Error
Amplifier
DACOUT
VOUT2
FAULT
GND
PGND
LGATE1
PHASE1
UGATE1
PGOOD
Lower
Drive
Compensation
OC1
3.3V
5V
11uA
Inhibit
Soft Start
& Fault Logic
+
-
OC2
+
-
+
-
+
-
+
-
0.3V
1.26V
3.3V
0.25A
FB3
GATE3
VIN2
VSEN1
OCSET1
SS
FB1
VCC
VCC
VCC



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