ILC6360CIR-36 IMPALA [Impala Linear Corporation], ILC6360CIR-36 Datasheet - Page 9

• Manufacturer Part Number: ILC6360CIR-36
• Description: STEP-UP/STEP DOWN DC-DC CONVERTER FOR 1-CELL LITHIUM-LON BATTERIES
• Manufacturer: IMPALA [Impala Linear Corporation]

Layout And Grounding Considerations
High frequency switching and large peak currents means
PCB design for DC-DC converters requires careful consid-
eration. A general rule is to place the DC-DC converter cir-
cuitry well away from any sensitive RF or analog compo-
nents. The layout of the DC-DC converters and its external
components are also based on some simple rules to mini-
mize EMI and output voltage ripple.
Layout
1. Place all power components, ILC6360, inductor, input
2. Keep the output capacitor as close to the ILC6360 as
ILC6360 1.1
Step-Up/Step-Down DC-DC Converter for 1-Cell Lithium-Ion Batteries
capacitor and output capacitor as close together as possible.
possible with very short traces to the V
Typically it should be within 0.25 inches or 6mm.
Impala Linear Corporation
ON/OFF
100 F
V
C
IN
IN
OUT
R4
15 H
L1
[phone]
and GND pins.
1
2
3
4
Local "Quiet" Ground
ILC6360CIR-ADJ
V
SYNC
LBI/SD
Power Ground
IN
L
X
GND
LBO
V
V
3. Keep the traces for the power components wide, typically >
4. Place the external networks for LBI and V
Grounding
1. Use a star grounding system with separate traces for the
2. On multilayer boards use component side copper for
OUT
FB
www.impalalinear.com
50mil or 1.25mm.
ILC6360, but away from the power components as far
as possible.
power ground and the low power signals such as LBI/SD
and V
supply enters the PCB.
grounding around the ILC6360 and connect back to a
quiet ground plane using vias.
8
7
6
5
10µF 100µF
+
FB
C
OUT
+
. The star should radiate from where the power
R1
R2
R3
V
OUT
Jan 1999
FB
close to the
9