RT8453BGSP Richtek USA Inc, RT8453BGSP Datasheet - Page 10

• Manufacturer Part Number: RT8453BGSP
• Description: IC LED DVR BUCK 40V 1.5A 8SOP
• Manufacturer: Richtek USA Inc

Specifications of RT8453BGSP

• Constant Current: Yes
• Internal Driver: Yes
• Type - Primary: Backlight, General Purpose
• Mounting Type: Surface Mount
• Topology: PWM, Step-Down (Buck)
• Number Of Outputs: 1
• Frequency: 400kHz ~ 600kHz
• Voltage - Supply: 4.5 V ~ 40 V
• Package / Case: 8-SOIC (0.154", 3.90mm Width) Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Operating Temperature: -
• Other names: 1028-1004-2

RT8453B
www.richtek.com
C6
R5
Place L1 and D1 as close to each other as possible.
The trace should be as short and wide as possible.
The input capacitor C1 must be placed as close to VCC
pin as possible.
Place the compensation components to VC pin as close
as possible to avoid noise pick up.
Locate the compensation
components to VC pin as
close as possible.
R2
ACTL
ISN
VC
EN
Figure 2. PCB Layout Guide
2
3
4
GND
9
C2
8
7
6
5
C3
Locate input capacitor as
close VCC as possible.
VCC
SW
GND
SS
C1
Place these components
as close as possible.
D1
L1
DS8453B-00 August 2010