293D107X0010D2
器件描述：The EL7562 is a Buck (Step Down) DC:DC controller with integrated synchronous MOSFETs in a 16-pin QSOP package.
器件厂商：INTERSIL [Intersil Corporation]
文件大小：635.06KB，共7页
Sponsor by e络盟器件资料摘要：
1
®
TB423
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
Using the EL7562 Demo Board
The EL7562 is a Buck (Step Down)
DC:DC controller with integrated
synchronous MOSFETs in a 16-pin
QSOP package. With very few external components, a 2A
step-down DC:DC converter can be very easily built,
resulting in saved board space (0.5in
2
), minimal design
effort, and improved design time.
There are 2 demo boards, one for nominal 5V input and
another for 3.3V input. This document outlines the design
consideration and lists the bill of materials and the layout.
Please also refer to the advanced data sheet of EL7562 for
detailed applications of the features.
EL7562 Demo Board Circuit Schematic for V
IN
= 5V Application
EL7562
1
2
3
4
16
15
14
13
5
6
7
12
11
10
8 9
SGND
COSC
VDD
PGND
PGND
VIN
VIN
EN
PGND
VREF
FB
VDRV
LX
LX
VHI
PGND
R
3
R
2
L
1
C
3
C
4
C
1
C
2
C
5
R
1
C
6
C
7
V
O
V
IN
V
O
0.985 1
R
2
R
1
-------+
×=
EL7562 Demo Board Bill of Material V
IN
= 5V, V
OUT
= 3.3V
REFERENCE
DESIGNATION VALUE MANUFACTURER
MANUFACTURER’S
PHONE NUMBER PART NUMBER
C1 100µF Sprague 207-324-4140 293D107X0010D2
C2, C3, C5, C6 0.1µF, 0603 Any
C4 270pF, 5%, 0603 Any
C7 100µF Sprague 207-324-4140 293D107X0010D2
L1 4.7µH Coilcraft 847-639-6400 D01813472HC
R1 1kΩ, 0603 Any
R2 2370Ω, 0603 Any
R3 39Ω, 0603 Any
Technical Brief June 20, 2002
N
O
T
R
E
C
O
M
M
E
N
D
E
D
F
O
R
N
E
W
D
E
S
IG
N
S
S
E
E
E
L
7
5
3
2
®
TB423
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
Using the EL7562 Demo Board
The EL7562 is a Buck (Step Down)
DC:DC controller with integrated
synchronous MOSFETs in a 16-pin
QSOP package. With very few external components, a 2A
step-down DC:DC converter can be very easily built,
resulting in saved board space (0.5in
2
), minimal design
effort, and improved design time.
There are 2 demo boards, one for nominal 5V input and
another for 3.3V input. This document outlines the design
consideration and lists the bill of materials and the layout.
Please also refer to the advanced data sheet of EL7562 for
detailed applications of the features.
EL7562 Demo Board Circuit Schematic for V
IN
= 5V Application
EL7562
1
2
3
4
16
15
14
13
5
6
7
12
11
10
8 9
SGND
COSC
VDD
PGND
PGND
VIN
VIN
EN
PGND
VREF
FB
VDRV
LX
LX
VHI
PGND
R
3
R
2
L
1
C
3
C
4
C
1
C
2
C
5
R
1
C
6
C
7
V
O
V
IN
V
O
0.985 1
R
2
R
1
-------+
×=
EL7562 Demo Board Bill of Material V
IN
= 5V, V
OUT
= 3.3V
REFERENCE
DESIGNATION VALUE MANUFACTURER
MANUFACTURER’S
PHONE NUMBER PART NUMBER
C1 100µF Sprague 207-324-4140 293D107X0010D2
C2, C3, C5, C6 0.1µF, 0603 Any
C4 270pF, 5%, 0603 Any
C7 100µF Sprague 207-324-4140 293D107X0010D2
L1 4.7µH Coilcraft 847-639-6400 D01813472HC
R1 1kΩ, 0603 Any
R2 2370Ω, 0603 Any
R3 39Ω, 0603 Any
Technical Brief June 20, 2002
N
O
T
R
E
C
O
M
M
E
N
D
E
D
F
O
R
N
E
W
D
E
S
IG
N
S
S
E
E
E
L
7
5
3
2