Analog Devices DC3018A, Руководство пользователя

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9
DEMO MANUAL DC3018A
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications
subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
SCHEMATIC DIAGRAM
5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
HI LO
1.2V 12.5A
2.25V - 5.5V
EN
VOUT
MODE/SYNC
GND
EN
SSTT
PGOOD
GND
VIN
GND
VIN
GND
VOUT
GND
VOUT SNSE
GND SNSE
VIN SNSE
GND SNSE
OPT
REVISION HISTORY
ECO
REV
DESCRIPTION
APPROVED
DATE
-
PRODUCTION
MM
02-12-2020
02
PCA ADDITIONAL PARTS
PULSE SKIP/SYNC
FORCED CONT
(VIN MAX)
MODE
PULSE SKIP
FORCED CONT.
R3
R4
R7
OPEN
0 or OPEN *
POPULATED OR OPEN **
100k
OPEN
* IF R7 IS POPULATED R4 MUST BE OPEN. ** MODE/SYNC PIN IS CLOCK OUTPUT WHEN R7 IS POPULATED.
0
FSW = 2MHz
CONNECT BY VOUT
SENSE ONLY
VIN EMI
VIN EMI
R6
OPEN
100k
2.25V - 5.5V
NOTES: UNLESS OTHERWISE SPECIFIED 1. RESISTORS: OHMS, 0402, 1%, 1/16W 2. CAPACITORS: 0402
SG_INPUT
I_STEP
OPTIONAL TRANSIENT RESPONSE CIRCUIT
20V MAX
VIN
VIN
VIN
VIN
GND_A
VIN
GND
GND_A
DATE:
IC NO.
SHEET
OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCA ASS'Y DWG:
www.analog.com
1
1
NC
MM
LTC3311S
DC3018A
710-DC3018A_REV02
705-DC3018A_REV02
Wednesday, February 12, 2020
5V, 12.5A SYNCHRONOUS STEP-DOWN SILENT SWITCHER 2 DATE:
IC NO.
SHEET
OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCA ASS'Y DWG:
www.analog.com
1
1
NC
MM
LTC3311S
DC3018A
710-DC3018A_REV02
705-DC3018A_REV02
Wednesday, February 12, 2020
5V, 12.5A SYNCHRONOUS STEP-DOWN SILENT SWITCHER 2 DATE:
IC NO.
SHEET
OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCA ASS'Y DWG:
www.analog.com
1
1
NC
MM
LTC3311S
DC3018A
710-DC3018A_REV02
705-DC3018A_REV02
Wednesday, February 12, 2020
5V, 12.5A SYNCHRONOUS STEP-DOWN SILENT SWITCHER 2
C23 0.1uF
0201
STNCL1
TOOL, STENCIL, DC3018A
REV02
E15
JP1
TP2
E19
E5
E13
C17 10uF
0603
R12 15k
MP1
STANDOFF,NYLON,SNAP-ON,0.50"
C10 OPT
R6 100k R3 OPT
C14 10uF
0603
MP4
STANDOFF,NYLON,SNAP-ON,0.50"
TPB1
E9
E12
E7
R2 249k
C12 OPT
E20
E2
C9
0.033uF
R8 20
C3 22uF
0805
E11
TP3
R15 10k
5%
C2
22uF 0805
C20 0.22uF
Q1
SUD50N04-8m8P
2
1
3
R11 100k 5%
E10
R4 0
MP3
STANDOFF,NYLON,SNAP-ON,0.50"
TP1
C21
1uF
C22 0.1uF
0201
L1_1
C8 47uF
0805
L1
0.1uH
XEL4030-101MEB
E17
R9 140k
+
C18 470uF 6TPE470MI
E18
C6 47uF 0805
E14
C4
6.8pF
E4
C13 10uF
0603
PCB1
PCB, DC3018A
REV02
L2
100 OHMS@100MHz
LB1
LABEL
R1 1M
R13 0
TPA1
E1
R14 0.05 2818 10W
E6
C5 47uF
0805
C16 10uF 0603
E3
MP2
STANDOFF,NYLON,SNAP-ON,0.50"
C11
470pF
+
C1 470uF
6TPE470MI
E21
C15 0.1uF
R5 OPT
U1
LTC3311S-LQFN
EN
1
SW
6
FB
18
ITH
17
MODE/SYNC
13
RT
15
PGOOD
14
SSTT
16
VIN
3
PGND
5
AGND
2
VIN
11
VIN
12
VIN
4
SW
7
SW
8
SW
9
PGND
19
PGND
10
C7
0.1uF
R7 OPT
E16
R10 100k
E8
C19 0.22uF
VOUT
VFB
RT
VFB
RT
SW
VOUT
MODE
SW
MODE
VOUT
VIN