AP1533-EVM

AP1533-EV
Application Note
AP1533 Application Information and Demo Board User Guide
Contents
1. Description
2. Schematic
3. PCB Layout
4. Bill of Materials
5. Vendors of peripheral components
This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is
assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
1/3
Rev. A
Mar. 2011
www.diodes.com
 Diodes Incorporated
AP1533-EV
Application Note
AP1533 Application Information and Demo Board User Guide
1. Description
AP1533 is step-down switching regulator with PWM control. AP1533 provides low-ripple
power, high efficiency, and excellent transient characteristics.
2. EVM Schematic
3. Board Layout
Top Layer
Bottom Layer
This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is
assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
2/3
Rev. A
Mar. 2011
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 Diodes Incorporated
AP1533-EV
Application Note
AP1533 Application Information and Demo Board User Guide
4. Bill of Materials
Component
Location
C2, C4
C3,C6, C8
C1, C5, C7,
C9, C10
R1
R2
R3
R4
R5
U1
L1
D1
VIN, VOUT,
GND
PCB
Q'ty
Value
Source
1 Aluminum Cap 470uF/16V
3 Cap MLCC 0.1uF/50V/X5R
Size
TEAPO
TAIYO YUDEN UMK212BJ104KG-T
0 NC
1
1
0
1
1
1
1
1
Part No.
CAP8/3.5mm
C0805
-
6.8kΩ, 1%
1.3kΩ, 1%
NC
5.6kΩ, 1%
100kΩ, 1%
3A, PWM
33uH/4.2A
3A/40V
C0805
YAGEO
YAGEO
YAGEO
YAGEO
Diodes Inc.
Wurth Electronics
Diodes Inc.
RC0805FR-SK
RC0805FR-SK
RC0805FR-SK
RC0805FR-SK
AP1533
7447 series
B340
R0805
R0805
R0805
R0805
SOP-8L
12*12*10mm
SMC
-
-
2.2mmX 1.35mm
Diodes Inc.
TDB0009
1860milX 1300mil
4 Header_1
1 AP1530/33/34EV Board Ver0.1
The recommended minimum ROCSET value is summarized below:
:
VIN(V)
4
5
12
18
23
VOUT(V)
0.8
3.3
5
12
12
ROCSET(Ω)
3.9k
3.3k
3.3k
3.3k
4.7k
5. Vendors of peripheral components
:
Suggested Capacitors for C2 and C4
Vendor
Capacitance
TEAPO
Aluminum Cap 470uF/16V
Suggested Capacitors for C3 C6 and C8
、
Vendor
TAIYO YUDEN
:
Capacitance
Cap MLCC 0.1uF/50V/X5R
Type
DIP
Series
Type
SMD
Series
UMK212BJ104KG-T
:
Suggested Resistor
Vendor
YAGEO
Type
SMD
Series
RC0805FR-SK
This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is
assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
3/3
Rev. A
Mar. 2011
www.diodes.com
 Diodes Incorporated
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