9
dc1811baf
DEMO MANUAL DC1811B-A
schematic DiaGram
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE 0603.
ALL CAPACITORS ARE 0603.
35V
4.5V - 26.5V
1.0V / 13A
6.3V
6TPF330M9L
1.8V / 13A
ON
ON
6.3V
6TPF330M9L
1210
1210
1210
OPT
0805
OFF
1210
1210
1210
1210
1210
1210
1210
0.035 VIA TESTPOINTS
WITH POWER SYSTEM MANAGEMENT
*
WHEN VIN < 5.75V, SHORT INTVCC TO VIN WITH R8 = 0ohm.
*
U1
B - A
B - B
LTM4676EY
LTM4676AEY
*
*
VOSNS0-
VDD33
SYNC
SHARE_CLK
ALERTB
SCL
SDA
GPIO0B
GPIO1B
ASEL
FREQ_CFG
VOUT0_CFG
VTRIM0_CFG
VOUT1_CFG
VTRIM1_CFG
RUN1
VDD25
RUN0
INTVCC
VOSNS1
VIN
VOUT0
VOUT1
VIN
SYNC
SHARE_CLK
ALERTB
SCL
SDA
GPIO0B
GPIO1B
COMP0a
COMP1a
RUN0
RUN1
VDD33
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
1
Friday, October 24, 2014
13
DUAL STEP-DOWN uMODULE REGULATOR
HZ
JIAN L.
B
LTM LTM4676AEY
DEMO CIRCUIT 1811B
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
1
Friday, October 24, 2014
13
DUAL STEP-DOWN uMODULE REGULATOR
HZ
JIAN L.
B
LTM LTM4676AEY
DEMO CIRCUIT 1811B
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
1
Friday, October 24, 2014
13
DUAL STEP-DOWN uMODULE REGULATOR
HZ
JIAN L.
B
LTM LTM4676AEY
DEMO CIRCUIT 1811B
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
JIAN L.
PRODUCTION
1
6-2-14
__
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
JIAN L.
PRODUCTION
1
6-2-14
__
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
JIAN L.
PRODUCTION
1
6-2-14
__
E13
GPIO0B
E13
GPIO0B
E4
VIN
E4
VIN
COUT1 100uF
COUT1 100uF
CIN3 10uF
CIN3 10uF
J7
VOUT0
J7
VOUT0
R18 10K
R18 10K
CIN2 10uF
CIN2 10uF
R9
0
R9
0
E9
SYNC
E9
SYNC
R10 10K
R10 10K
R7
0
R7
0
E17
GND0_SNS
E17
GND0_SNS
R4
OPT
R4
OPT
R33
OPT
R33
OPT
COUT7 100uF
COUT7 100uF
R8
OPT
R8
OPT
C2
OPT
C2
OPT
J10
VIN
J10
VIN
CIN5 10uF
CIN5 10uF
J5
GND
J5
GND
E16
VDD25
E16
VDD25
R14 10K
R14 10K
R32
0
R32
0
COUT8 100uF
COUT8 100uF
C14
2200pF
C14
2200pF
C1
2200pF
C1
2200pF
+
COUT5 330uF
+
COUT5 330uF
P1P1
R24 10K
R24 10K
U1
LTM4676EY / LTM4676AEY
U1
LTM4676EY / LTM4676AEY
VOUT0
A1
VOUT0
A2
VOUT0
A3
VOUT0
D1
ISNS0b-
E1
F1
ISN
S1b-
G1
ISN
S1b+
H1
VOU
T1
J1
VOU
T1
J2
VOU
T1
J3
VOU
T1
K1
VOUT0
B1
VOUT0
B2
VOUT0
B3
VOUT0
D2
ISNS0a-
E2
F2
ISN
S1a-
G2
ISN
S1a+
H2
VOU
T1
K2
VOU
T1
K3
VOU
T1
L1
VOU
T1
L2
VOUT0
C1
VOUT0
C2
VOUT0
C3
VOUT0
D3
GND
A4
GND
A6
GND
A7
GND
A8
VOU
T1
L3
VOU
T1
M1
VOU
T1
M2
VOU
T1
M3
GND
A9
GND
A10
GND
B4
GND
B5
ASEL
G4
FSWPHCFG
H4
GND
B6
GND
B7
GND
B8
GND
B9
GPIO0
E4
GPIO1
F4
SNUB0
A5
GND
C4
TSNS0b
C5
TSNS0a
D5
ALERT
E5
RUN0
F5
VOUT0CFG
G5
VTRIM0CFG
H5
TSN
S1a
J5
TSN
S1b
K5
GND
C6
SNU
B1
M5
GND
C7
GND
C8
GND
C9
SDA
D6
SCL
E6
RUN1
F6
VOUT1CFG
G6
VTRIM1CFG
H6
VDD25
J6
WP
K6
GND
D4
GND
E3
GND
F3
GND
F10
GND
G3
GND
G10
SYNC
E7
GND
M9
GND
M10
SHARE_CLK
H7
VDD33
J7
GND
G11
GND
G12
GND
L8
GND
L7
GND
L9
GND
H3
COMP0b
D8
COMP0a
E8
SGN
D
F7
SGN
D
F8
COMP
1a
H8
COMP
1b
J8
GND
H10
GND
J4
GND
M8
D9
VOSNS0-
E9
INTVCC
F9
INTVCC
G9
VOSN
S1
H9
VOR
B1
J9
GND
J10
GND
L4
GND
L5
GND
K4
SW0
B10
DNC
E11
VORB0+
D10
VORB0-
E10
GND
L6
GND
K7
GND
K8
GND
K9
DNC
C10
SW1
L10
GND
M4
VINH0
B12
VINH0
B11
VINH0
A12
VINH0
A11
DNC
K10
VINL
F12
GND
M6
DNC
H11
VINH1
H12
VINH1
J11
VINH1
J12
VINH1
K11
VINH0
E12
VINH0
D12
VINH0
D11
VINH0
C12
VINH0
C11
VINL
F11
GND
M7
VINH1
K12
VINH1
L11
VINH1
L12
VINH1
M11
VINH1
M12
SGN
D
G7
SGN
D
G8
GND
D7
R30
6.34K
R30
6.34K
E7
GND1_SNS
E7
GND1_SNS
R29
(OPT)
R29
(OPT)
R16 10K
R16 10K
E8
VDD33
E8
VDD33
COUT6 100uF
COUT6 100uF
E12
SDA
E12
SDA
C15 OPT
C15 OPT
R20
0805
R20
0805
P2P2
J8
GND
J8
GND
R25
0
R25
0
P4P4
C17 OPT
C17 OPT
R11 10K
R11 10K
+
COUT4 330uF
+
COUT4 330uF
R19 10K
R19 10K
P5P5
R23
OPT
R23
OPT
R3 0
R3 0
E14
GPIO1B
E14
GPIO1B
COUT3 100uF
COUT3 100uF
E15
VOUT0_SNS
E15
VOUT0_SNS
COUT2 100uF
COUT2 100uF
J9
GND
J9
GND
R6 OPT
R6 OPT
R27
(OPT)
R27
(OPT)
E3
INTVCC
E3
INTVCC
+
CIN1 150uF
+
CIN1 150uF
R15 10K
R15 10K
R5 0
R5 0
R2 4.99K
R2 4.99K
E1
VOUT1_SNS
E1
VOUT1_SNS
E10
ALERTB
E10
ALERTB
JP1
RUN0
JP1
RUN0
1
3
2
R13 10K
R13 10K
E11
SCL
E11
SCL
R22 4.22K
R22 4.22K
R12 10K
R12 10K
E6
SHARE_CLK
E6
SHARE_CLK
P3P3
CIN4 10uF
CIN4 10uF
JP2
OFF
RUN1
JP2
OFF
RUN1
1
3
2
R28
(OPT)
R28
(OPT)
E2
GND
E2
GND
C16 OPT
C16 OPT
J6
VOUT1
J6
VOUT1
R31
0
R31
0
R26
(OPT)
R26
(OPT)
E5
GND
E5
GND
