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RT8805 Datasheet(PDF) 2 Page - Richtek Technology Corporation

Part # RT8805
Description  Two Phase General Purpose PWM Controller
PDF  15 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT8805 Datasheet(HTML) 2 Page - Richtek Technology Corporation

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RT8805
Preliminary
2
DS8805-01 November 2005
www.richtek.com
Typical Application Circuit
Function Block Diagram
BOOT1
UGATE1
PHASE1
LGATE1
VCC
RT
IMAX
RT8805
2
14
5
3
15
16
1
BOOT2
UGATE2
LGATE2
PGOOD
V
IN
12
11
10
V
OUT
7
6
AGND
COMP
SS
PHASE2
12V
CC
4
13
EN
GND
9
8
FB
R1
R2
R3
R4
R5
C1
C2
C3
C4
C5
C6
C7
C8
L1
L2
Q1
Q2
Q3
Q4
3.3V
CC
R8
Q5
R9
C9
PWM1
Logic
V
CC
PWM2
Logic
V
CC
V
CC
-
+
+
-
RAMP2
RAMP1
External
Soft Star
+
-
Current
Balance
OCP
S/H
+
-
MUX
PGOOD
FB
COMP
SS
AGND
RT
GND
PHASE1
PHASE2
LGATE2
PHASE2
UGATE2
BOOT2
LGATE1
PHASE1
UGATE1
BOOT1
V
CC
CLK2
CLK1
Clock
CLK1
CLK2
VCC
Reg
V
DD
Central
Logic
PGOOD
To PWM Logic
OC
OC
IMAX
PWMCP
PWMCP
GM
0.8V
EA



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