Linear Technology Analog Devices LTM4676A, Демонстрационное руководство

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10
DEMO MANUAL DC1811B-B
Rev. A
SCHEMATIC DIAGRAM
5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN
OPT
201
0
2010
OPT
VOUT1
DYNAMIC LOAD CIRCUIT
DO NOT EXCEED 5% DUTY CYCLE!
BLEEDER LOADS
OPTIONAL JUMPER FOR DUAL PHASE SINGLE OUTPUT CONFIGURATION
2010
WITH POWER SYSTEM MANAGEMENT
VOUT0
VOUT1
VOUT0
VOUT1
COMP0a
COMP1a
GPIO0B
GPIO1B
RUN0
RUN1
SIZE DATE:
.V
ER
.O
N
CI
SHEE
T
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPEC
IFICATIONS;
HOWEVER
, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VER
IFY PROPER AND RELIABLE OPER
ATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PER
FORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEER
ING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
1
Monday, December 01, 2014
2
3
DUAL STEP-DOWN uMODULE REGULATOR
HZ
JIAN L.
N/A
LTM4676EY / LTM4676AEY
DEMO CIRCUIT 1811B-A/B
SIZE DATE:
.V
ER
.O
N
CI
SHEE
T
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPEC
IFICATIONS;
HOWEVER
, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VER
IFY PROPER AND RELIABLE OPER
ATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PER
FORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEER
ING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
1
Monday, December 01, 2014
2
3
DUAL STEP-DOWN uMODULE REGULATOR
HZ
JIAN L.
N/A
LTM4676EY / LTM4676AEY
DEMO CIRCUIT 1811B-A/B
SIZE DATE:
.V
ER
.O
N
CI
SHEE
T
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPEC
IFICATIONS;
HOWEVER
, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VER
IFY PROPER AND RELIABLE OPER
ATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PER
FORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEER
ING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
1
Monday, December 01, 2014
2
3
DUAL STEP-DOWN uMODULE REGULATOR
HZ
JIAN L.
N/A
LTM4676EY / LTM4676AEY
DEMO CIRCUIT 1811B-A/B
E22
GND
E22
GND
R3
8
OPT
R3
8
OPT
R52 10K R52 10K
Q1
SUD50N03-09P
Q1
SUD50N03-09P
2
1
3
4
R50R50
J3J3
1
2
3
4
5
R49 2010 OPT R49 2010 OPT
J4
IOSTEP
J4
IOSTEP
1
2
3
4
5
E23
SGND
E23
SGND
C22 1uF C22 1uF
C24 1uF C24 1uF
J2
VOUT0
J2
VOUT0
1
2
3
4
5
R3
5
OPT
R3
5
OPT
R48 2010 0.5W 0 R48 2010 0.5W 0
E20
IOSTEP_CLK
E20
IOSTEP_CLK
R4
1
OPT.
R4
1
OPT.
R51R51
E24
SGND
E24
SGND
C21 1uF C21 1uF
R53 0.01 R53 0.01
C23 1uF C23 1uF