rt8450 Richtek Technology Corporation, rt8450 Datasheet - Page 3

• Manufacturer Part Number: rt8450
• Description: High Voltage Multi-topology Led Driver
• Manufacturer: Richtek Technology Corporation

1. RT8450_D3-12_V2 : Boost Converter Application
Schematic
Bill of Materials
ER-RT8450-0308-A
April 2008
TP3
VC
U1
C1,C2,C3
VIN
EN
Reference Qty.
R14
10K
C8
3.3nF
TP5
ACTL
R13
100K
R18
10K
R3
NC
R4
0
C9
0.47uF
TP4
EN
R16
0
DCTL
R15
TP2
ISP
GP4
1
3
100k
RT8450
GRM32ER71H475KA88 4.7uF/50V/X7R
TP1
ISN
EN
DCTL
Part Number
R8
10K
R19
0
ACTL
ISP
ISN
VC
ACTL
1
2
3
4
5
6
R1
R2
0
NC
VIN
ISP
ISN
VC
ACTL
DCTL
EN
RT8450
GND
RichTek Conceptual
4.7uF/50V
C3
VCC2
VCC1
GND
OVP
SW
DC_IN
High Voltage Multi-Topology
LED Driver
SS
1
2
3
12
11
10
9
8
7
4.7uF/50V
C2
VCC2
VCC1
SW
GND
SS
OVP
Description
J1
1
C4
2
1
C5
2
C10
10nF
RT8450
Evaluation Board
TP6
SW
VIN
L1
10u
4.7uF/50V
1
SCHOTTKY /SCD110
WDFN-12L 3x3
C1
D1
Package
GP1
VIN
1210
1uF/100V
C6
R5
NC
R10
0
Manufacture
www.richtek.com
R6
NC
R11
0
C7
1uF/100V
RichTek
Murata
R9
470mohm
R17
VOUT2
1
GP2
VOUT1
0
GP3
1
R20
420K
R7
10K
R12
NC