14
dc1989aaf
DEMO MANUAL DC1989A-A
schematic Diagram
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
GPIO0
GPIO1
ALERTB
TO DC1613A
ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
FAULT1
FAULT3
SYNC_C
FAULT2
VCC
3V3
3V3
3V3
3V3
3V3
GPIO0B
GPIO1B
ALERTB
ALERTB
SDA
SCL
RUN0
RUN1
SHARE_CLK
GPIO1B
GPIO0B
SYNC
A0_EEPROM
A1_EEPROM
VCC
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
Wednesday, January 02, 2013
56
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4676EY
DEMO CIRCUIT 1989A-A
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
Wednesday, January 02, 2013
56
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4676EY
DEMO CIRCUIT 1989A-A
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
Wednesday, January 02, 2013
56
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4676EY
DEMO CIRCUIT 1989A-A
R92
0
R92
0
Q2
2N7002A
Q2
2N7002A
2
3
1
E20
AUXP
E20
AUXP
R93
OPT
R93
OPT
R90 0
R90 0
D1
GREEN
D1
GREEN
E15
SHARE_CLK
E15
SHARE_CLK
R94
OPT
R94
OPT
R100 200
R100 200
R88 OPT
R88 OPT
E11
GPIO1B
E11
GPIO1B
R97 10K
R97 10K
E18
GPIO0B
E18
GPIO0B
D3
RED
D3
RED
R86
0
R86
0
R85
0
R85
0
D2
GREEN
D2
GREEN
E22
SGND
E22
SGND
U5
24LC025-I/ST
U5
24LC025-I/ST
SCL
1
VSS
2
SDA
3
A1
4
A0
5
VCC
6
E21
RUN1
E21
RUN1
E19
RUN0
E19
RUN0
R98 10K
R98 10K
R101 127
R101 127
R91 OPT
R91 OPT
J9
DEMO HEADER (F)
J9
DEMO HEADER (F)
+3.3V
1
VIN_SNS
2
GND
3
VIN_EN
4
SCL
5
ALERTB
6
SDA
7
CONTROL0
8
SPARE1
9
SPARE2
10
WDI/RESETB
11
CONTROL1
12
SPARE3
13
SHARE_CLK
14
FAULT4
15
FAULT2
16
FAULT3
17
FAULT1
18
SPARE4
19
GND
20
E13
SDA
E13
SDA
R95 4.99K
R95 4.99K
Q3
2N7002A
Q3
2N7002A
2
3
1
E14
SCL
E14
SCL
J7J7
AUXP
1
SDA
2
GND
3
SCL
4
LGKPWR
5
ALERTB
6
GPIO_1
7
OUTEN_0
8
OUTEN_1
9
GND
10
AUXSCL
11
AUXSDA
12
E16
SYNC
E16
SYNC
R96 4.99K
R96 4.99K
E17
SGND
E17
SGND
J8
DEMO HEADER (M)
J8
DEMO HEADER (M)
+3.3V
1
VIN_SNS
2
GND
3
VIN_EN
4
SCL
5
ALERTB
6
SDA
7
CONTROL0
8
SPARE1
9
SPARE2
10
WDI/RESETB
11
CONTROL1
12
SPARE3
13
SHARE_CLK
14
FAULT4
15
FAULT2
16
FAULT3
17
FAULT1
18
SPARE4
19
GND
20
R99 200
R99 200
R87 OPT.
R87 OPT.
E12
ALERTB
E12
ALERTB
C21 100nF
C21 100nF
R89
0
R89
0
Q1
TP0101K Q1
TP0101K
2
3
1
