RT8282B RICHTEK [Richtek Technology Corporation], RT8282B Datasheet - Page 13

• Manufacturer Part Number: RT8282B
• Description: 2A, 23V, 1.2MHz Synchronous Step-Down Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

Layout Consideration
For best performance of the RT8282B, the follow layout
guidelines must be strictly followed.
DS8282B-01 March 2011
Input capacitor must be placed as close to the IC as
possible.
Location
C
C
C
C
C
C
C
OUT
OUT
OUT
OUT
IN
IN
IN
(d) Copper Area = 50mm
Input capacitor must
be placed as close
to the IC as possible.
Component Supplier
TAIYO YUDEN
MURATA
MURATA
MURATA
C
TDK
TDK
TDK
OUT
GND
Figure 6. Themal Resistance vs. Copper Area Layout Design
V
OUT
2
Table 3. Suggested Capacitors for C
, θ
C
JA
R
IN
S
L1
= 51°C/W
V
IN
SW should be connected to inductor by
wide and short trace. Keep sensitive
components away from this trace.
C
S
GRM32ER71C226M
GRM31CR61E106K
GRM31CR60J476M
C3225X5R1E106K
C3225X5R0J476M
TMK316BJ106ML
C3225X5R1C22M
Figure 8. PCB Layout Guide
SW
BOOT
GND
VIN
SW
Part No.
GND
2
3
4
GND
9
SW should be connected to inductor by wide and short
trace. Keep sensitive components away from this trace.
The feedback components must be connected as close
to the device as possible
8
7
6
5
(e) Copper Area = 70mm
Capacitance (μF)
C
SS
EN
COMP
FB
SS
IN
and C
R2
R
R1
EN
10
10
10
47
47
22
22
V
V
The feedback components
must be connected as close
to the device as possible.
OUT
OUT
IN
GND
C
C
C
P
R
Case Size
2
C
, θ
1206
1206
1206
1206
1210
1210
1210
RT8282B
JA
= 49°C/W
www.richtek.com
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