RT8279 RICHTEK [Richtek Technology Corporation], RT8279 Datasheet - Page 13

• Manufacturer Part Number: RT8279
• Description: 5A, 36V, 500kHz Step-Down Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

Table 3. Suggested Capacitors for C
Table 4. Suggested Diode
DS8279-01
Component Supplier
Location
C
C
C
C
C
C
OUT
OUT
OUT
OUT
IN
IN
DIODES
PANJIT
December 2011
Component Supplier
TAIYO YUDEN
MURATA
MURATA
MURATA
TDK
TDK
Series
B550C
SK55
V
The feedback components
should be connected as close
to the device as possible.
OUT
R1
IN
V
and C
RRM
SW
UMK325BJ475MM-T
GRM32ER71C226M
50
50
GRM32ER71H475K
GRM31CR60J476M
R2
C3225X5R0J476M
BOOT
C3225X5R1C22M
Figure 6. PCB Layout Guide
C
(V)
BOOT
NC
NC
FB
OUT
Part No.
SW should be connected to inductor by
wide and short trace. Keep sensitive
components away from this trace.
2
3
4
I
OUT
GND
5
5
(A)
9
GND
8
7
6
5
Input capacitor should be
placed as close to the IC
as possible.
GND
SW
VIN
EN
L1
Package
V
Capacitance (μF)
OUT
SMC
SMC
D1
C
4.7
4.7
C
C
C
47
47
22
22
OUT
OUT
IN
IN
Case Size
1206
1206
1206
1210
1210
1210
RT8279
www.richtek.com
13