Linear Technology LTC3124, Демонстрационное руководство

Страница: 5 / 6

5
dc1859afa
DEMO MANUAL DC1859A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SCHEMATIC DIAGRAM
5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
1.5A [1]
NOTE: UNLESS OTHERWISE SPECIFIED,
[1] OUTPUT WITH 5V INPUT. SEE QSG FOR OTHER INPUTS.
VIN
VIN
VOUT
SIZE DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax:
(408)434-0507
Milpitas,
CA
95035
Phone:
(408)432-1900
1630
McCarthy
Blvd.
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
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
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
DEMO
CIRCUIT
1859A
Wednesday,
June
25,
2014
11
DUAL
PHASE
SYNCHRONOUS
STEP-UP
N/A
LTC3124EDHC
M
I
GORAN P.
DC/DC
CONVERTER
SIZE DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax:
(408)434-0507
Milpitas,
CA
95035
Phone:
(408)432-1900
1630
McCarthy
Blvd.
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
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
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
DEMO
CIRCUIT
1859A
Wednesday,
June
25,
2014
11
DUAL
PHASE
SYNCHRONOUS
STEP-UP
N/A
LTC3124EDHC
M
I
GORAN P.
DC/DC
CONVERTER
SIZE DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax:
(408)434-0507
Milpitas,
CA
95035
Phone:
(408)432-1900
1630
McCarthy
Blvd.
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
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
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
DEMO
CIRCUIT
1859A
Wednesday,
June
25,
2014
11
DUAL
PHASE
SYNCHRONOUS
STEP-UP
N/A
LTC3124EDHC
M
I
GORAN P.
DC/DC
CONVERTER
E2
GND
E2
GND
JP1
PWM
BURST
MODE
JP1
PWM
BURST
MODE
1 3 2
R9
1M
R9
1M
C4
0.1uF
C4
0.1uF
+
C1 (OPT)
+
C1 (OPT)
E5
GND
E5
GND
R4 1M 1% R4 1M 1%
R8
1M
R8
1M
R3 OPT R3 OPT
R6
51.1k
1%
R6
51.1k
1%
C8 1uF 25V C8 1uF 25V
E1
VIN
1.8V - 5.5V
E1
VIN
1.8V - 5.5V
R5 110k 1% R5 110k 1%
E3
PWM/SYNC
E3
PWM/SYNC
U1
LTC3124EDHC
U1
LTC3124EDHC
PGNDA
4
VC
9
VIN
5
RT
8
FB
10
SGND
12
SD
11
PGNDB
2
PWM/SYNC
6
SWA
3
VCC
7
SWB
1
VOUTA
13
NC
14
VOUTB
15
CAP
16
EXPOSED PAD
17
+
C11 OPT
+
C11 OPT
C9
680pF
C9
680pF
E4
VOUT 12V
E4
VOUT 12V
L2
4.7uH
XAL6060-472
Coilcraft
L2
4.7uH
XAL6060-472
Coilcraft
R1 28k 1% R1 28k 1%
L1
4.7uH
XAL6060-472
Coilcraft
L1
4.7uH
XAL6060-472
Coilcraft
E6
SD
E6
SD
C3 4.7uF 10V C3 4.7uF 10V
JP2
ON
OFF
RUN
JP2
ON
OFF
RUN
1 3 2
C7
OPT
C7
OPT
C10 56pF C10 56pF
C2 10uF 10V C2 10uF 10V
C5 22uF 25V C5 22uF 25V
C6
22uF 25V
C6
22uF 25V
R7 OPT R7 OPT