DC1811B_ - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
__
DESCRIPTION
1
COMP1a
PRODUCTION
APPROVED
JIAN L.
DATE
6-2-14
VOUT1
J6
C1
2200pF
COUT1
100uF
1210
R2
4.99K
D
0.035 VIA
TESTPOINTS
E2
R5
0
R4
0805
OPT
P1
R6
OPT
CIN1
+
150uF
35V
J9
CIN2
10uF
1210
CIN3
10uF
1210
CIN4
10uF
1210
GND
E5
GND
R9 0
F11
F12
R3
0
E1
VOUT1_SNS
E3
J1
J2
J3
K1
K2
K3
L1
L2
L3
M1
M2
M3
INTVCC
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
J9
COUT4
330uF
6.3V
6TPF330M9L
+
C17
OPT
H9
J8
COUT3
100uF
1210
D
VOSNS1
VORB1
COMP1b
J5
K5
H2
H1
G2
G1
L10
M5
H8
COMP1a
TSNS1a
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
TSNS1b
A11
A12
B11
B12
C11
C12
D11
D12
E12
CIN5
10uF
1210
ISNS1a+
ISNS1b+
*
ISNS1aISNS1b-
J10
VIN
4.5V - 26.5V
SW1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VIN
SNUB1
H12
J11
J12
K11
K12
L11
L12
M11
M12
VIN
COUT2
100uF
1210
VOSNS1
P2
GND
E4
VOUT1
1.8V / 13A
C2
OPT
R7
J5
0
GND
INTVCC
INTVCC
F9
G9
R8
INTVCC
OPT
VIN
E7
GND1_SNS
E8
VDD33
VDD33
VINL
VINL
VDD33
J7
SYNC
E9
SHARE_CLK
E6
VDD33
SYNC
SHARE_CLK
P3
B10
R20
A5
OPT
0805
E2
E1
F2
F1
COMP0a
C
C15
OPT
C5
D5
C14
2200pF
E8
R22
4.22K
R23
OPT
P4
E15
VOUT0_SNS
P5
R25
VOSNS0+
D8
D10
E10
D9
R10
10K
SW0
SNUB0
SYNC
SHARE_CLK
ISNS0aISNS0b-
ALERT
SCL
ISNS0a+
ISNS0b+
TSNS0b
TSNS0a
U1
*
SDA
GPIO0
LTM4676EY / LTM4676AEY
GPIO1
WP
COMP0a
RUN0
COMP0b
RUN1
E7
SYNC
H7
SHARE_CLK
E5
ALERTB
R11
10K
R12
10K
R13
10K
R14
10K
R15
10K
R16
10K
R18
10K
E10
ALERTB
SCL
E11
SDA
E12
SDA
E6
SCL
D6
SDA
E4
GPIO0B
F4
GPIO1B
GPIO0B
E13
GPIO0B
GPIO1B
C
E14
GPIO1B
K6
F5
RUN0
F6
RUN1
J6
VDD25
R24
10K
RUN0
3
VDD25
ALERTB
SCL
VORB0+
VORB0-
R19
10K
VOSNS0+
0
ON
2
JP1
1
OFF
C16
OPT
VOSNS0VOUT0
1.0V / 13A
J7
E9
VOSNS0-
ASEL
G4
ASEL
H4
FREQ_CFG
+ COUT5
330uF
6.3V
6TPF330M9L
J8
COUT6
100uF
1210
COUT7
100uF
1210
COUT8
100uF
1210
GND
R32
0
A1
A2
A3
B1
B2
B3
C1
C2
C3
D1
D2
D3
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
FSWPHCFG
VOUT0CFG
G5
VOUT0_CFG
H5
VTRIM0_CFG
VTRIM0CFG
VOUT1CFG
VTRIM1CFG
R26
(OPT)
R27
(OPT)
RUN0
VOUT0
G6
VOUT1_CFG
H6
VTRIM1_CFG
RUN1
R28 (OPT)
3
R29 (OPT)
2
JP2
1
OFF
R30
R31
ON
6.34K
0
RUN1
DNC
DNC
DNC
DNC
VDD25
B
C10
E11
H11
K10
G7
G8
F7
F8
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
A4
A6
A7
A8
A9
A10
B4
B5
B6
B7
B8
B9
C4
C6
C7
C8
C9
D4
D7
E3
F3
F10
G3
G10
G11
G12
H3
H10
J4
J10
K4
K7
K8
K9
L4
L5
L6
L7
L8
L9
M4
M6
M7
M8
M9
M10
GND0_SNS
SGND
SGND
SGND
SGND
E16
E17
B
R33
OPT
NOTE: UNLESS OTHERWISE SPECIFIED
*
1. ALL RESISTORS ARE 0603.
ALL CAPACITORS ARE 0603.
U1
* WHEN VIN < 5.75V, SHORT INTVCC TO VIN WITH R8 = 0ohm.
A - A
LTM4676EY
A - B
LTM4676AEY
A
A
CUSTOMER NOTICE
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
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.
5
4
3
2
TECHNOLOGY
HZ
JIAN L.
TITLE: SCHEMATIC
SIZE
DUAL STEP-DOWN uMODULE REGULATOR
WITH POWER SYSTEM MANAGEMENT
B
SCALE = NONE
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
DATE:
IC NO.
LTM4676EY + LTM4676AEY
DEMO CIRCUIT 1811B-A/B
Monday, December 01, 2014
SHEET 1
1
REV.
1
OF 3
5
4
3
2
1
ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN
D
D
VOUT0
VOUT1
DYNAMIC LOAD CIRCUIT
SGND
E24
R51
2010
OPT
VOUT0
J2
VOUT1
1
J3
1
VOUT0
C21
1uF
5
4
3
2
SGND
R50
2010
OPT
R48
2010
0.5W
0
C
VOUT1
C22
1uF
R49
2010
OPT
2
3
4
5
E23
C
2
4
BLEEDER LOADS
OPTIONAL JUMPER FOR DUAL PHASE
SINGLE OUTPUT CONFIGURATION
Q1
SUD50N03-09P
E20
DO NOT EXCEED 5% DUTY CYCLE!
OPT
E22
RUN0
1
R53
0.01
2010
GND
R41 OPT.
COMP0a
J4
R52
10K
IOSTEP
2
3
4
5
R38
RUN1
3
GPIO1B
C24
1uF
1
IOSTEP_CLK
R35 OPT
GPIO0B
C23
1uF
COMP1a
B
B
CUSTOMER NOTICE
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
TECHNOLOGY
HZ
JIAN L.
TITLE: SCHEMATIC
A
DUAL STEP-DOWN uMODULE REGULATOR
WITH POWER SYSTEM MANAGEMENT
SIZE
IC NO.
LTM4676EY / LTM4676AEY
N/A
SCALE = NONE
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
DATE:
DEMO CIRCUIT 1811B-A/B
Monday, December 01, 2014
2
SHEET 2
1
REV.
1
OF 3
5
4
2
1
ALL PARTS ON THIS PAGE ARE FOR DEMO BOARD ONLY, NOT NEEDED IN CUSTOMER DESIGN
D8
1
VDD33
3
2
R61 OPT
GPIO1B
J13
AUX3V4
SCL
GND
SDA
D
4 AUX3V4
3
2
1
R62
OPT
SYNC
ALERTB
SDA
SCL
SHARE_CLK
D
R63 0
GPIO0B
TO DC2086A
D2
OPT
AUXP
3V3
AUXP
SDA
GND
SCL
LGKPWR
ALERTB
GPIO_1
OUTEN_0
OUTEN_1
GND
AUXSCL
AUXSDA
C
3
R72
4.99K
4
A1
WP
A2
SCL
VSS
SDA
R68
R67
OPT
OPT
RUN1
RUN1
FAULTB
CTRL
ALERTB
SDA
SHARE_CLK
SCL
RESETB
AUXP
UNUSED
UNUSED
GND
GND
12V
12V
100nF
2
R66
0
E30
U3
VCC
RUN0
R83
OPT
C26
A0
RUN0
3V3
1
2
3
4
5
6
7
8
9
10
11
12
TO DC1613A
1
E29
R65 0
E21
J1
D1
OPT
R64
OPT
R73
4.99K
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
J11 DEMO HEADER (F)
7
EEWP
EESCL
5
EESDA
VIN
24LC025-I/ST
R74
OPT
R75
OPT
R70
10
R69
10
C
C28
10nF
C27
10nF
J12 DEMO HEADER (M)
R82
OPT
1206
8 AUXVCC
6
FAULTB
CTRL
ALERTB
SDA
SHARE_CLK
SCL
RESETB
AUXP
UNUSED
UNUSED
GND
GND
12V
12V
R89
OPT
R88
OPT
B
B
PSM STACKING CONNECTORS:
OPTIONAL CIRCUIT FOR PROGRAMMING
WITHOUT VIN
3V3
Q19
VDD33
DMP3130L-7
3
HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416
J2, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn. NPPN072FJFN-RC
VDD33
1
VIN
2
J1, MALE, CONN
R77 10K
CUSTOMER NOTICE
R78
15.8k
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
APPROVALS
4
3
TECHNOLOGY
HZ
JIAN L.
TITLE: SCHEMATIC
DUAL STEP-DOWN uMODULE REGULATOR
WITH POWER SYSTEM MANAGEMENT
SIZE
N/A
SCALE = NONE
2
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
DATE:
IC NO.
LTM4676EY / LTM4676AEY
DEMO CIRCUIT 1811B-A/B
Monday, December 01, 2014
SHEET 3
1
REV.
1
OF 3
A
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