7
dc2081a-bfa
DEMO MANUAL DC2081A-B
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.
Dc2081a-B schematic Diagram
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
36A
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
m
DYNAMIC LOAD CIRCUIT
VOUT
4.5V - 15V
PGOOD
RUN
TRACK
VFB
PGOOD
COMP
RUN
TRACK
DIFFP DIFFN
VFB
COMP
VIN
INTVCC
VOUT
VO+
VO-
VO+
INTVCC
VO+
VO-
VOUT
VIN
VOUT
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
PRODUCTION
-
1
HAORAN W
10-22-14
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
PRODUCTION
-
1
HAORAN W
10-22-14
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
PRODUCTION
-
1
HAORAN W
10-22-14
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
DEMO
CIRCUIT
DC2081A-B
Wednesday,
October
22,
2014
1
1
HIGH
EFFICIENCY,
DUAL
PHASE,
SINGLE
OUTPUT
N/A
LTM4630EV
/
LTM4630EY-1
HAORAN W.
STEP-DOWN
POWER
MODULE
REGULATOR
LT
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
DEMO
CIRCUIT
DC2081A-B
Wednesday,
October
22,
2014
1
1
HIGH
EFFICIENCY,
DUAL
PHASE,
SINGLE
OUTPUT
N/A
LTM4630EV
/
LTM4630EY-1
HAORAN W.
STEP-DOWN
POWER
MODULE
REGULATOR
LT
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
DEMO
CIRCUIT
DC2081A-B
Wednesday,
October
22,
2014
1
1
HIGH
EFFICIENCY,
DUAL
PHASE,
SINGLE
OUTPUT
N/A
LTM4630EV
/
LTM4630EY-1
HAORAN W.
STEP-DOWN
POWER
MODULE
REGULATOR
LT
C5 3.3nF
C5 3.3nF
COUT5 220uF
1206
4V
COUT5 220uF
1206
4V
R10 (OPT)
R10 (OPT)
J5
IOSTEP
J5
IOSTEP
R12 0 Ohm
R12 0 Ohm
C9 1uF
C9 1uF
CIN4 22uF
25V 1210
CIN4 22uF
25V 1210
E9
CLKIN
E9
CLKIN
+
COUT4 (OPT)
+
COUT4 (OPT)
+
COUT8 (OPT)
+
COUT8 (OPT)
R11 1K
R11 1K
C1
47pF
C1
47pF
R18
10K
R18
10K
C7 0.1uF
C7 0.1uF
CIN5 22uF
25V 1210
CIN5 22uF
25V 1210
+
COUT6 (OPT)
+
COUT6 (OPT)
R4 10K
R4 10K
+
COUT2 (OPT)
+
COUT2 (OPT)
E18
GND
E18
GND
C4 2.2uF
10V
C4 2.2uF
10V
R19 90.9K
1%
R19 90.9K
1%
+
CIN1 150uF
25V
+
CIN1 150uF
25V
R2
121K
1%
R2
121K
1%
E8
TEMP
E8
TEMP
COUT11
(OPT)
COUT11
(OPT)
R9
100K
1%
R9
100K
1%
R3 10
R3 10
E11
EXTVCC
E11
EXTVCC
E2
VIN-
E2
VIN-
E4
VO-
E4
VO-
J3
GND
J3
GND
1
E6
RUN
E6
RUN
COUT3 220uF
4V 1206
COUT3 220uF
4V 1206
E3
VO+
E3
VO+
C8 1uF
C8 1uF
+
COUT9 (OPT)
+
COUT9 (OPT)
J1
VIN
J1
VIN
1
Q1
SUD50N04-8M8P
Q1
SUD50N04-8M8P
2
1
3
4
E7
SGND
E7
SGND
E12
PHASMD
E12
PHASMD
R13 4.02K
R13 4.02K
+
COUT10 (OPT)
+
COUT10 (OPT)
J2
0.6 - 1.8V
VOUT
J2
0.6 - 1.8V
VOUT
E14
SW2
E14
SW2
R16 0.015
1W 2512
R16 0.015
1W 2512
E13
SW1
E13
SW1
E17
IOSTEP CLK
E17
IOSTEP CLK
COUT14
220uF
1206
4V
COUT14
220uF
1206
4V
J6J6
U1
LTM4630EY-1
U1
LTM4630EY-1
VOUT1
A1
VOUT1
A2
VOUT1
A3
VOUT1
A4
VOUT1
A5
VOUT1
B1
VOUT1
B2
VOUT1
B3
VOUT1
B4
VOUT1
B5
VOUT1
C1
VOUT1
C2
VOUT1
C3
VOUT1
C4
VFB1
D5
SW1
G2
PGOOD1
G9
COMP1
E6
RUN1
F5
TRACK1
E5
VOUTS1
C5
VOUT2
A8
VOUT2
A9
VOUT2
A10
VOUT2
A11
VOUT2
A12
VOUT2
B8
VOUT2
B9
VOUT2
B10
VOUT2
B11
VOUT2
B12
VOUT2
C9
VOUT2
C10
VOUT2
C11
VOUT2
C12
VFB2
D7
SW2
G11
PGOOD2
G8
COMP2
E7
RUN2
F9
TRACK2
D8
VOUTS2
C8
VIN
M2
VIN
M3
VIN
M4
VIN
M5
VIN
M6
VIN
M7
VIN
M8
VIN
M9
VIN
M10
VIN
M11
VIN
L2
VIN
L3
VIN
L4
VIN
L5
VIN
L6
VIN
L7
VIN
L8
VIN
L9
VIN
L10
VIN
L11
VIN
K2
VIN
K3
VIN
K4
VIN
K9
VIN
K10
VIN
K11
VIN
J2
VIN
J3
VIN
J4
VIN
J9
VIN
J10
VIN
J11
GND
A6
GND
A7
GND
B6
GND
B7
GND
D1
GND
D2
GND
D3
GND
D4
GND
D9
GND
D10
GND
D11
GND
D12
GND
E1
GND
E2
GND
E3
GND
E4
GND
E10
GND
E11
GND
E12
GND
F1
GND
F2
GND
F3
GND
F10
GND
F11
GND
F12
GND
G1
GND
G3
GND
G10
GND
G12
GND
H1
GND
H2
GND
H3
GND
H4
GND
H5
GND
H6
GND
H7
GND
H9
GND
H10
GND
H11
GND
H12
GND
M12
GND
M1
GND
L12
GND
J1
GND
J5
GND
J8
GND
J12
GND
K1
GND
K5
GND
K6
GND
K7
GND
K8
GND
K12
GND
L1
SGND
C7
SGND
D6
SGND
F6
SGND
F7
SGND
G6
SGND
G7
FSET
C6
PHASMD
G4
DIFFP
E8
DIFFN
E9
CLKOU
T
G5
MO
DE-PLLI
N
F4
TEMP
J6
INTVCC
H8
EXTVCC
J7
DIFFOUT
F8
E1
VIN+
E1
VIN+
COUT12 220uF
1206
4V
COUT12 220uF
1206
4V
J4
GND
J4
GND
R14
0 Ohm
0603
R14
0 Ohm
0603
COUT7 220uF
1206
4V
COUT7 220uF
1206
4V
E5
PGOOD
E5
PGOOD
R8 (OPT)
R8 (OPT)
E10
CLKOUT
E10
CLKOUT
COUT13
(OPT)
COUT13
(OPT)
C10 1uF
C10 1uF
COUT1 (OPT)
COUT1 (OPT)
C3 (OPT)
C3 (OPT)
CIN3 22uF
25V 1210
CIN3 22uF
25V 1210
R1 10
R1 10
CIN2 22uF
25V 1210
CIN2 22uF
25V 1210
