lt3579iufd-trpbf Linear Technology Corporation, lt3579iufd-trpbf Datasheet - Page 18

• Manufacturer Part Number: lt3579iufd-trpbf
• Description: Lt3579/lt3579-1 6a Boost/inverting Dc/dc Converter With Fault Protection Features
• Manufacturer: Linear Technology Corporation

LT3579/LT3579-1
APPLICATIONS INFORMATION
18
A– RETURN C
B– RETURN C
C– RETURN D1 GROUND DIRECTLY TO LT3579 EXPOSED PAD PIN 21. IT IS ADVISED TO NOT COMBINE D1 GROUND WITH GND EXCEPT AT THE EXPOSED PAD.
L1, L2 – MOST COUPLED INDUCTOR MANUFACTURERS USE CROSS PINOUT FOR IMPROVED PERFORMANCE.
IN
OUT
GROUND DIRECTLY TO LT3579 EXPOSED PAD PIN 21. IT IS ADVISED TO NOT COMBINE C
GROUND DIRECTLY TO LT3579 EXPOSED PAD PIN 21. IT IS ADVISED TO NOT COMBINE C
Figure 11. Suggested Component Placement for Inverting Topology in FE20 Package.
Note Separate Ground Path for D1’s Cathode
–
V
+
IN
C
IN
VIAS TO GROUND PLANE REQUIRED TO IMPROVE
THERMAL PERFORMANCE
A
C
D1
10
1
2
3
4
5
6
7
8
9
C1
L1
21
GND
20
19
18
17
16
15
14
13
12
11
L2
B
IN
OUT
GROUND WITH GND EXCEPT AT THE EXPOSED PAD.
GROUND WITH GND EXCEPT AT THE EXPOSED PAD.
3579 F11
C
OUT
SYNC
SHDN
CLKOUT
GND
–V
OUT
35791f