AS1324-AD EB austriamicrosystems, AS1324-AD EB Datasheet - Page 16

• Manufacturer Part Number: AS1324-AD EB
• Description: BOARD EVAL AS1324-AD
• Manufacturer: austriamicrosystems

Specifications of AS1324-AD EB

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 1.8V
• Current - Output: 600mA
• Voltage - Input: 2.7 ~ 5.5 V
• Regulator Topology: Buck
• Frequency - Switching: 1.5MHz
• Board Type: Fully Populated
• Utilized Ic / Part: AS1324-AD
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption
• Power - Output: -

AS1324
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
9.10 Layout Considerations
The AS1324 requires proper layout and design techniques for optimum performance.
Figure 29. AS1324 Basic PCB Layout
Figure 30. AS1324 Basic Diagram
www.austriamicrosystems.com/DC-DC_Step-Down/AS1324
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The power traces (GND, SW, and V
Pin V
should be avoided to minimize the output voltage ripple and to maintain the stability of the regulator.
The resistive divider (R
The positive plate of C
FETs.
Switching node SW should be kept far away from the sensitive V
The negative plates of C
V
FB
OUT
(AS1324 only) should be connected directly to the feedback resistors (R
IN
1
/R
IN
should be connected as close to V
2
and C
V
) must be connected between the positive plate of C
OUT
OUT
IN
) should be kept as short, direct, and wide as is practical.
should be kept as close to each other as is practical. A starpoint to Ground is recommended.
L
1
C
OUT
L
1
SW
C
GND
OUT
SW
EN
1
2
3
1
2
3
AS1324
GND
Via to V
IN
AS1324
Revision 1.05
as is practical since C
FB
IN
C
5
4
IN
node.
C
IN
C
R
R
FWD
1
2
5
VFB
4
VIN
OUT
1
and R
IN
and ground.
R
provides the AC current to the internal power MOS-
2
2
V
). A potentiometer as replacement for R
IN
C
FWD
Via to V
Via to GND
OUT
R
1
V
IN
High Current Path
1
and R
16 - 20
2