RT8452GS Richtek USA Inc, RT8452GS Datasheet - Page 2

• Manufacturer Part Number: RT8452GS
• Description: IC PWM CTRLR LED DVR 16SOP
• Manufacturer: Richtek USA Inc

Specifications of RT8452GS

• Internal Driver: No
• Type - Primary: Backlight, General Purpose
• Mounting Type: Surface Mount
• Topology: PWM, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Frequency: 280kHz ~ 420kHz
• Voltage - Supply: 4.5 V ~ 36 V
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Operating Temperature: -

RT8452
Marking Information
Typical Application Circuit
www.richtek.com
2
RT8452
GSYMDNN
PWM
Dimming control
4.5V to 36V
10k
Dimming
R
C
3.3nF
Analog
4.5V to 36V
VC
VC
V
10k
RT8452GS : Product Number
YMDNN : Date Code
R
C
3.3nF
IN
V
VC
5V
VC
IN
5V
C
0.1µF
SS
C
0.1µF
SS
Figure 2. PWM to Analog Dimming in Boost Configuration
C
1µF
10µF
C
10µF
B
C
IN
IN
C
1µF
Figure 1. Analog Dimming in Boost Configuration
B
10
15
13
11
C
0.47µF
9
1
8
10
15
13
11
9
A
1
8
ACTL
DCTL
VC
SS
GBIAS
VCC
EN
DCTL
VC
SS
GBIAS
ACTL
VCC
EN
RT8452
47µH
RT8452
47µH
L1
PWMOUT
PWMDIM
GND
L1
PWMOUT
PWMDIM
GND
GATE
16, 17 (Exposed Pad)
OVP
GATE
16, 17 (Exposed Pad)
ISW
ISN
ISP
OVP
ISW
ISN
ISP
14
2
4
6
7
3
5
14
2
4
6
7
3
5
M1
M1
F4=YM
D1
0.05
R
DNN
D1
R
0.05
SW
SW
C
1µF
C
1µF
OUT
R2
OUT
R2
R1
F4= : Product Code
YMDNN : Date Code
R1
R
R
SENSE
0.1
SENSE
0.1
V
OUT
V
OUT
DS8452-01
14 LEDs
48V (Max.)
14 LEDs
48V (Max.)
V
OUT
V
OUT
September 2010