DC1740A - Demo Manual

DEMO MANUAL DC1740A
LTC3880EUJ
PolyPhase Step-Down DC/DC Converter
with Digital Power System Management
DESCRIPTION
Demonstration circuit 1740A is a PolyPhase® synchronous
buck converter featuring the LTC®3880EUJ, a dual-phase
current mode controller with PMBus interface and digital
power system management functions. There are two versions of the boards available:
LTpowerPlay™ onto your PC and use LTC’s I2C/SMBus/
PMBus Dongle DC1613A to connect to the board.
LTpowerPlay allows the user to reconfigure the part on the
fly and store the configuration in EEPROM, view telemetry
of voltage, current, temperature and fault status.
• DC1740A-A: 4-phase single-output configuration.
Default output setting VOUT0 = 1.2V/80A
GUI Download
• DC1740A-B: 3+1-phase dual-output configuration. Default output setting VOUT0 = 1.5V/20A, VOUT1 = 1.2V/60A
http://www.linear.com/ltpowerplay
The DC1740A powers up to default settings and produces power based on configuration resistors or with
non-volatile memory (NVM) settings without the need for
any serial bus communication. This allows easy evaluation of the DC/DC converter aspects of the LTC3880.
To fully explore the extensive digital power management features of the parts, download the GUI software
PERFORMANCE SUMMARY
SYMBOL
PARAMETER
VIN
Input Supply Range
VOUT0
Output Voltage Range (1740A-A version)
IOUT0
Output Current Range (1740A-A version)
VOUT0
Output Voltage Range (1740A-B version)
IOUT0
Output Current Range (1740A-B version)
VOUT1
Output Voltage Range (1740A-B version)
IOUT1
Output Current Range (1740A-B version)
FSW
Factory Default Switching
EFF
Peak Efficiency (-A version)
The software can be downloaded from:
For more digital power system management information
and instructions of LTpowerPlay, please visit:
http://www.linear.com/dpsm
Design files for this circuit board are available at
http://www.linear.com/demo
L, LT, LTC, LTM, Linear Technology, the Linear logo and PolyPhase are registered trademarks
and LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
Specifications are at TA = 25°C
CONDITIONS
IOUT0 = 0A TO 80A, VIN = 7V to 14V
MIN
TYP
MAX
7
12
14
0.5
1.2
4.096
V
80
A
1.5
4.096
V
20
A
1.2
4.096
V
60
A
0
IOUT0 = 0A TO 20A, VIN = 7V to 14V
0.5
IOUT1 = 0A TO 60A, VIN = 7V to 14V
0.5
0
0
VOUT0 = 1.2V, See Figure 4
UNITS
V
425
kHz
88.6
%
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DEMO MANUAL DC1740A
QUICK START PROCEDURE
Demonstration circuit 1740A makes it easy to set up
to evaluate the performances of the LTC3880. Refer to
Figure 2 for proper measurement equipment setup and
follow the procedure below:
Note: When measuring the input or output voltage ripple,
care must be taken to avoid a long ground lead on the
oscilloscope probe. Measure the output voltage ripple by
touching the probe tip directly across the C11 or C44. See
Figure 3 for proper scope probe technique.
1.Make sure jumpers are in the following positions:
DC1740A-A Version
JUMPER
POSITION
FUNCTION
JP2
C
JP3
ON
3.3V for LED indicator
JP4
OFF
External VCC for LTC3880-1
JP5
C
Tie RUN0 to RUN1
Tie GPIO0B to GPIO1B
DC1740A-B Version
JUMPER
POSITION
FUNCTION
JP2
NC
Tie RUN0 to RUN1
JP3
ON
3.3V for LED indicator
JP4
OFF
External Vcc for LTC3880-1
JP5
NC
Tie GPIO0B to GPIO1B
2.With power off, connect the input power supply to
VIN and GND. Connect active load to the output.
3.Make sure both RUN switches are OFF.
4.Turn on the power at the input.
Note: Make sure that the input voltage does not exceed
15V.
5.Turn on RUN switches as desired.
6.Check for the correct output voltage from TP15 to TP16
and from TP24 to TP26.
Note. If there is no output, temporarily disconnect the
load to make sure that the load is not set too high.
7.Once the proper output voltage is established, adjust
the loads within the operating range and observe the
output voltage regulation, ripple voltage, efficiency and
other parameters.
8.Connect the dongle and control the output voltages
from the GUI. See LTpowerPlay Quick Start section for
details.
Connecting a PC to DC1740A
You can use a PC to reconfigure the power management
features of the LTC3880 such as: nominal VOUT, margin
set points, OV/UV limits, temperature fault limits, sequencing parameters, the fault log, fault responses, GPIO and
other functionality. The DC1613A dongle may be plugged
in regardless of whether or not VIN is present. Dongle can
be hot plugged.
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DEMO MANUAL DC1740A
QUICK START PROCEDURE
Figure 1. Demo Setup with PC
IOUT0
V
IOUT1
V
SHUNT
VOUT0
Load
V
VOUT1
Load
V
A
V
POWER
SUPPLY
SHUNT
Figure 2. Power Test Setup (Dual-Output example)
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DEMO MANUAL DC1740A
QUICK START PROCEDURE
Combining DC1740A with Other Digital Power Demo
Boards
The DC1740A may be plugged together in a multi-board
array with other LTC power system management boards
using J7 and J8.
Measuring Output Ripple Voltage
An accurate ripple measurement may be performed by
using the Figure 3 configuration across C11 or C44.
Measuring Efficiency (See Figure 4)
To accurately measure efficiency of any configuration, do
the following:
• Remove R103, R111 (bleeder resistors on bottom side
of board)
• Set JP3 to OFF to disable the regulator that provides
power to various auxiliary demo board components
like LEDs.
Evaluating the LTC3880-1
For applications that require the highest possible efficiency,
the LTC3880-1 allows the user to supply the bias voltage
and gate driver current from an external power supply.
Connect the external power supply, 4.8V to 5.2V, to the
EXTVCC pin.
To use the onboard LDO to drive INTVCC, make the following modifications to the demo board:
100
VIN = 12V
FSW = 425kHz
95
VOUT = 1.5V
90
EFFICIENCY (%)
• Measure VIN across the input ceramic capacitor (C5,
C37). Measure VOUT across the output ceramic capacitor
(C11, C44).
Figure 3. Measuring Output Voltage Ripple
VOUT = 1.2V
85
80
75
70
65
60
0
10
20
30 40 50 60
LOAD CURRENT (A)
70
80
3866 G12
Figure 4. Typical Efficiency Curves DC1740A-A
• Set JP4 to ON so that U5 provides the 5V drive to
INTVCC. U5 takes the place of the external power supply.
• Install R1,R46.
To accurately measure efficiency of a demo board containing the LTC3880-1,
• Drive INTVCC from an external source through the pin
named: EXTVCC.
IOUT
20A/DIV
VOUT
50mV/DIV
• Set JP3 and JP4 to OFF to disable the LDOs.
• Measure VIN across the input ceramic capacitor (C5,
C37). Measure VOUT across the output ceramic capacitor
(C11, C44).
VIN = 12V
VOUT = 1.2V
IOUT = 0A TO 40A
FSW = 425kHz
Figure 5. Load Transient Waveform DC1740A-A
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DEMO MANUAL DC1740A
LTpowerPlay SOFTWARE GUI
LTpowerPlay is a powerful Windows-based development
environment that supports Linear Technology power system management ICs, including the LTC3880, LTC3883,
LTC2974 and LTC2978. The software supports a variety
of different tasks. You can use LTpowerPlay to evaluate
Linear Technology ICs by connecting to a demo board
system. LTpowerPlay can also be used in an offline mode
(with no hardware present) in order to build a multi-chip
configuration file that can be saved and reloaded at a later
time. LTpowerPlay provides unprecedented diagnostic
and debug features. It becomes a valuable diagnostic tool
during board bring-up to program or tweak the power
management scheme in a system, or to diagnose power
issues when bringing up rails. LTpowerPlay utilizes the
DC1613A USB-to-SMBus controller to communicate with
one of many potential targets, including the LTC3880’s
DC1740A demo system, or a customer board. The software also provides an automatic update feature to keep
the software current with the latest set of device drivers
and documentation. The LTpowerPlay software can be
downloaded from:
http://linear.com/ltpowerplay
To access technical support documents for LTC Digital
Power Products visit Help. View online help on the
LTpowerPlay menu.
Figure 6. LTpowerPlay Main Interface
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DEMO MANUAL DC1740A
LTpowerPlay QUICK START PROCEDURE
The following procedure describes how to use LTpowerPlay
to monitor and change the settings of LTC3880 (taking
DC1740A-A as an example).
1. Download and install the LTPowerPlay GUI:
http://linear.com/ltpowerplay
2. Launch the LTpowerPlay GUI.
a. The GUI should automatically identify the DC1740A-A.
The system tree on the left hand side should look like this:
b. A green message box shows for a few seconds in the
lower left hand corner, confirming that the LTC3880s
are communicating:
Then, click the “W” (PC to RAM) icon to write these register
values to the LTC3880.
After finishing this step, you will see the output voltage
will change to 1.5V.
If the write is successful, you will see the following message:
c. In the Toolbar, click the “R” (RAM to PC) icon to read the
RAM from the LTC3880. This reads the configuration
from the RAM of LTC3880 and loads it into the GUI.
d. If you want to change the output voltage to a different
value, like 1.5V. In the Config tab, type in 1.5 in the
VOUT_COMMAND box, like this:
e. You can save the changes into the NVM. In the tool bar,
click “RAM to NVM” button, as following:
f. Save the demo board configuration to a (*.proj) file.
Click the Save icon and save the file. Name it whatever
you want.
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DEMO MANUAL DC1740A
PARTS LIST
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURE/PART NUMBER
Required Circuit Components—DC1740A-A
1
2
C1, C36
CAP., X5R, 4.7µF,16V, 10%, 0805
MURATA GRM219R61C475KE15D
2
1
C76
CAP., X5R, 4.7µF,16V, 10%, 0603
TDK C1608X5R1C475K
3
6
C2, C40, C20, C34, C53, C67
CAP., X5R, 0.22µF,16V, 10%, 0603
AVX 0603YD224KAT2A
4
2
C72, C78
CAP., X5R, 0.22µF,16V, 10%, 0805
AVX 0805YC224KAT2A
5
2
C3, C69
CAP., OS-CON, 150µF, 16V, 20%, F12
SANYO, 16SVP150M
6
3
C5, C22, C37
CAP., X5R, 10µF,16V, 10%, 1210
TAIYO YUDEN EMK325BJ106KN
7
1
C58
CAP., X5R, 10µF,16V, 10%, 1210
TAIYO YUDEN EMK325BJ106KN
8
1
C75
CAP., X5R, 10µF,16V, 10%, 1206
TAIYO YUDEN EMK316BJ106KD
9
5
C6, C26, C39, C59, C79
CAP., X5R, 100nF,25V, 10%, 0603
AVX 06033C104KAT2A
10
4
C7, C8, C41, C42
CAP., X5R, 1µF, 25V, 10%, 0603
AVX 06033D105KAT2A
11
2
C73, C77
CAP., X5R, 1µF, 16V, 10%, 1206
AVX 1206YD105KAT2A
12
16
C9, C10, C14, C15, C27, C28, C29, C30, C46,
C47, C48, C49, C60, C61, C62, C63
CAP., POSCAP 330µF 4V D3L
SANYO, 4TPF330M9L
13
12
C11, C12, C13, C31, C32, C33, C43, C44, C45, CAP., X5R, 100µF, 6.3V, 10%,1210
C64, C65, C66
AVX 12106D107AT2A
14
1
C50
CAP., X7R, 4.7nF, 50V, 10%, 0603
NIC NMC0603X7R472K50TRPF
15
4
C18, C19, C51, C52
CAP., X7R, 100pF, 25V, 10%, 0603
AVX 06033C101JAT2A
16
4
C21, C35, C54 ,C68
CAP., X5R, 1µF, 25V, 10%, 0603
AVX 06033D105KAT2A
17
6
C23, C25, C56, C57, C70, C71
CAP., X5R, 10nF,16V, 10%, 0603
AVX 0603YC103KAT2A
18
4
D1, D2, D3, D4
DIODE, SCHOTTKY, SOD-323
CENTRAL CMDSH-3TR
19
4
L1, L2, L3, L4
INDUCTOR, SMT POWER IND. 0.4µH
COILCRAFT, XAL1060-401
20
4
Q1-Q4
DUAL N-CHANNEL MOSFET 25V LFPAK
FAIRCHILD FDMS3620S
21
1
U1
IC, LTC3880EUJ, QFN 6mm x 6mm
LTC., LTC3880EUJ#PBF
22
1
U2
IC, LTC3880EUJ, QFN 6mm x 6mm
LTC., LTC3880EUJ#PBF
Additional Circuit Components—DC1740A-A
1
2
D5, D6
LED GREEN S-GW TYPE SMD
PANASONIC LN1371SGTRP
2
1
D7
LED RED S-TYPE GULL WING SMD
PANASONIC LN1271RTR
3
0
Q7, Q9, Q10, Q11, Q12, Q13, Q14, Q16 (OPT) MOSFET SPEED SRS 30V 30A LFPAK
4
4
Q5, Q8, Q15, Q18
TRANS GP SS PNP 40V SOT-23
ON SEMI, MMBT3906LT1G
5
1
Q21
N-CHANNEL 30-V MOSFET,TO-252
VISHAY, SUD50N03-10P-E3
6
3
Q22, Q25, Q26
MOSFET P-CH 20V 0.58A SOT-23
VISHAY TP0101K-T1-E3
7
2
Q23, Q24
MOSFET N-CH 60V 115MA SOT-23
FAIRCHILD 2N7002A
8
0
R1, R46, R126, R128 (OPT)
RES., 0805
9
0
R11, R14, R24, R26, R28, R36, R37,
R53,R54, R63, R65, R71, R73, R94, R117,
R118, R124, R127, R129 (OPT)
RES., 0603
10
29
R2, R3, R10, R16, R20, R22, R25, R27, R30, RES., CHIP, 0Ω, 0603
R45, R47, R48, R50, R52, R55, R8, R59, R61,
R64, R66, R67, R68, R75, R89, R90, R95,
R129, R77, R79
NIC NRC06ZOTRF
11
5
R109, R115, R116, R119
RES., CHIP, 0Ω, 0805
NIC NRC10ZOTRF
12
1
R41
RES., CHIP, 15k, 1%, 0603
NIC NRC06F1502TRF
13
4
R4, R21, R49, R60
RES., CHIP, 0Ω, 2010
TEPRO(NAKOMA) RN6083
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DEMO MANUAL DC1740A
PARTS LIST
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURE/PART NUMBER
14
16
R5, R6, R7, R8, R29, R38, R39, R81, R82,
R87, R88, R91, R96, R102, R110, R112
RES., CHIP, 10k, 1%, 0603
NIC NRC06f1002TRF
15
8
R13, R18, R23, R31, R51, R57, R62, R69
RES., CHIP, 1k, 1%, 0603
NIC NRC06F1001TRF
16
2
R56
RES., CHIP, 4.87k, 1%, 0603
NIC NRC06F4871TRF
17
3
R33, R32, R70
RES., CHIP, 20k, 1%, 0603
NIC NRC06F2002TRF
18
3
R34, R35, R72
RES., CHIP, 24.9k, 1%, 0603
NIC NRC06F2492TRF
19
1
R40
RES., CHIP, 11k, 1%, 0603
NIC NRC06F127TRF
20
2
R43, R78
RES., CHIP, 5.76k, 1%, 0603
NIC NRC06F5761TRF
21
3
R120, R121, R122
RES., CHIP, 4.99K, 1%, 0603
NIC NRC06F4991TRF
22
1
R76
RES., CHIP, 12.7k, 1%, 0603
VISHAY CRCW060311K0FKEA
23
2
R100, R101
RES., CHIP, 200Ω, 1%, 0603
NIC NRC06F2000TRF
24
2
R103, R111
RES., CHIP, 0.02Ω, 1%, 2010
VISHAY, WSL2010R020FEA
25
1
R104
RES., CHIP, 127Ω, 1%, 0603
NIC NRC06F1270TRF
26
2
R105,R107
RES., CHIP, 100k, 1%, 0603
NIC NC06F1003TRF
27
1
R106
RES., CHIP, 49.9Ω, 1%, 0603
NIC NRC06F49R9TRF
28
2
R113, R114
RES., CHIP, 10Ω, 1%, 0603
NIC NRC06F10r0TRF
29
3
R9, R85, R86
RES., CHIP, 0Ω, 0603
PANASONIC ERJ-3GEY0R00V
30
0
R12, R19 OPT
31
4
R84, R74, R80, R83
RES., CHIP, 0Ω, 2010
TEPRO(NAKOMA) RN6083
32
0
R15 OPT
RES., 0603
33
1
R17
RES., CHIP, 4.87k, 1%, 0603
NIC NRC06F4871TRF
34
1
C16
CAP., X5R, 4.7nF,25V, 10%, 0603
NIC NMC0603X7R472K50TRPF
35
0
C17, OPT
36
0
C74, C80-C86 OPT
CAP., 1210
37
0
Q12, Q13, Q14, Q16 OPT
MOSFET SPEED SRS LFPAK
38
1
R42
RES., CHIP, 5.76K, 1%, 0603
NIC NRC06F5761TRF
39
1
FAB, PRINTED CIRCUIT BOARD
DEMO CIRCUIT 1740A
40
1
RES., CHIP, 0Ω, 0603
PANASONIC ERJ-3GEY0R00V
R44
Hardware—DC1740A-A
1
4
JP2-JP5
0.1" SINGLE ROW HEADER, 3 PIN
SAMTEC, TSW-103-07-L-S
2
2
JP2-JP5
SHUNT, 0.1" BLK
SAMTEC SNT-100-BK-G
3
4
J1, J2, J9, J11
JACK, BANANA
KEYSTONE 575-4
4
2
J3, J4
STUD, TESTPIN
PEM KFH-032-10
5
4
J3, J4 (X2)
NUT, BRASS 10-32
ANY #10-32
6
2
J3, J4
RING, LUG #10
KEYSTONE #10
7
2
J3, J4
WASHER, TIN PLATED BRASS
ANY #10
8
2
J5, J6
CONN, BNC, 5PINS
CONNEX, 112404
9
1
J7
CONN SOCKET 20 DUAL ROW RA (F)
MILL MAX 803-43-020-20-001
10
1
J8
PIN HEADER 20 DUAL ROW RA (M)
MILL MAX 802-43-020-20-001
11
1
J10
CONN HEADER 12POS 2MM STR DL PCB
FCI 98414-G06-12ULF
12
1
U4
IC, LDO REG W/SHTDWN 3.3V 8-SOIC
LINEAR TECH., LT1129CS8-3.3
13
1
U5
IC, LT1129CS8-5, S8 PACKAGE
LINEAR TECH, LT1129CS8-5
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DEMO MANUAL DC1740A
PARTS LIST
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURE/PART NUMBER
14
1
U6
IC, SERIAL EEPROM
MICROCHIP 24LC025-I/ST
15
2
SW3,SW4
CONNECTOR, SUB MINIATURE SLIDE
SWITCHES
C&K.,JS202011CQN
16
28
TP2-TP16, TP19-TP28, TP30, TP40, TP42
TESTPOINT, TURRET, 0.062"
MILL-MAX, 2308-2-00-80-00-00-07-0
17
4
STAND-OFF
STAND-OFF, NYLON 0.50" tall
KEYSTONE, 8833(SNAP ON)
Required Circuit Components—DC1740A-B
1
2
C1, C36
CAP., X5R, 4.7µF,16V, 10%, 0805
MURATA GRM219R61C475KE15D
2
1
C76
CAP., X5R, 4.7µF,16V, 10%, 0603
TDK C1608X5R1C475K
3
6
C2, C40, C20, C34, C53, C67
CAP., X5R, 0.22µF,16V, 10%, 0603
AVX 0603YD224KAT2A
4
2
C72, C78
CAP., X5R, 0.22µF,16V, 10%, 0805
AVX 0805YC224KAT2A
5
2
C3, C69
CAP., OS-CON, 150µF, 16V, 20%, F12
SANYO, 16SVP150M
6
3
C5, C22, C37
CAP., X5R, 10µF,16V, 10%, 1210
TAIYO YUDEN EMK325BJ106KN
7
1
C58
CAP., X5R, 10µF,16V, 10%, 1210
TAIYO YUDEN EMK325BJ106KN
8
1
C75
CAP., X5R, 10µF,16V, 10%, 1206
TAIYO YUDEN EMK316BJ106KD
9
5
C6, C26, C39, C59, C79
CAP., X5R, 100nF,25V, 10%, 0603
AVX 06033C104KAT2A
10
4
C7, C8, C41, C42
CAP., X5R, 1µF, 25V, 10%, 0603
AVX 06033D105KAT2A
11
2
C73, C77
CAP., X5R, 1µF, 16V, 10%, 1206
AVX 1206YD105KAT2A
12
16
C9, C10, C14, C15, C27, C28, C29, C30, C46,
C47, C48, C49, C60, C61, C62, C63
CAP., POSCAP 330µF 4V D3L
SANYO, 4TPF330M9L
13
12
C11, C12, C13, C31, C32, C33, C43, C44,
C45, C64, C65, C66
CAP., X5R, 100µF, 6.3V, 10%,1210
AVX 12106D107AT2A
14
1
C50
CAP., X7R, 4.7nF, 50V, 10%, 0603
NIC NMC0603X7R472K50TRPF
15
4
C18, C19, C51, C52
CAP., X7R, 100pF, 25V, 10%, 0603
AVX 06033C101JAT2A
16
4
C21, C35, C54, C68
CAP., X5R, 1µF, 25V, 10%, 0603
AVX 06033D105KAT2A
17
6
C23, C25, C56, C57, C70, C71
CAP., X5R, 10nF,16V, 10%, 0603
AVX 0603YC103KAT2A
18
4
D1, D2, D3, D4
DIODE, SCHOTTKY, SOD-323
CENTRAL CMDSH-3TR
19
4
L1, L2, L3, L4
INDUCTOR, SMT POWER IND. 0.4uH
COILCRAFT, XAL1060-401
20
4
Q1-Q4
DUAL N-CHANNEL MOSFET 25V LFPAK
FAIRCHILD FDMS3620S
21
1
U1
IC, LTC3880EUJ, QFN 6mm x 6mm
LTC., LTC3880EUJ#PBF
22
1
U2
IC, LTC3880EUJ, QFN 6mm x 6mm
LTC., LTC3880EUJ#PBF
Additional Circuit Components—DC1740A-B
1
2
D5, D6
LED GREEN S-GW TYPE SMD
PANASONIC LN1371SGTRP
2
1
D7
LED RED S-TYPE GULL WING SMD
PANASONIC LN1271RTR
3
0
Q7, Q9, Q10, Q11, Q12, Q13, Q14, Q16 (OPT) MOSFET SPEED SRS 30V 30A LFPAK
4
4
Q5, Q8, Q15, Q18
TRANS GP SS PNP 40V SOT-23
ON SEMI, MMBT3906LT1G
5
1
Q21
N-CHANNEL 30-V MOSFET,TO-252
VISHAY, SUD50N03-10P-E3
6
3
Q22, Q25, Q26
MOSFET P-CH 20V 0.58A SOT-23
VISHAY TP0101K-T1-E3
7
2
Q23, Q24
MOSFET N-CH 60V 115MA SOT-23
FAIRCHILD 2N7002A
8
0
R1, R46, R126, R128 (OPT)
RES., 0805
9
0
R11, R14, R24, R26, R28, R36, R37, R53,
R54, R63, R65, R71, R73, R94, R117, R118,
R124, R127, R129(OPT)
RES., 0603
dc1740afa
9
DEMO MANUAL DC1740A
PARTS LIST
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURE/PART NUMBER
10
29
R2, R3, R10, R16, R20, R22, R25, R27, R30,
R45, R47, R48, R50, R52, R55, R58, R59,
R61, R64, R66, R67, R68, R75, R89, R90,
R95, R129, R77, R79
RES., CHIP, 0Ω, 0603
NIC NRC06ZOTRF
11
5
R109, R115, R116, R119
RES., CHIP, 0Ω, 0805
NIC NRC10ZOTRF
12
1
R41
RES., CHIP, 15k, 1%, 0603
NIC NRC06F1502TRF
13
4
R4, R21, R49, R60
RES., CHIP, 0Ω, 2010
TEPRO(NAKOMA) RN6083
14
16
R5, R6, R7, R8, R29, R38, R39, R81, R82,
R87, R88, R91, R96, R102, R110, R112
RES., CHIP, 10k, 1%, 0603
NIC NRC06f1002TRF
15
8
R13, R18, R23, R31, R51, R57, R62, R69
RES., CHIP, 1k, 1%, 0603
NIC NRC06F1001TRF
16
2
R56
RES., CHIP, 4.87k, 1%, 0603
NIC NRC06F4871TRF
17
3
R33, R32, R70
RES., CHIP, 20k, 1%, 0603
NIC NRC06F2002TRF
18
3
R34, R35, R72
RES., CHIP, 24.9k, 1%, 0603
NIC NRC06F2492TRF
19
1
R40
RES., CHIP, 11k, 1%, 0603
NIC NRC06F127TRF
20
2
R43, R78
RES., CHIP, 5.76k, 1%, 0603
NIC NRC06F5761TRF
21
3
R120, R121, R122
RES., CHIP, 4.99k, 1%, 0603
NIC NRC06F4991TRF
22
1
R76
RES., CHIP, 12.7k, 1%, 0603
Vishay CRCW060311K0FKEA
23
2
R100, R101
RES., CHIP, 200Ω, 1%, 0603
NIC NRC06F2000TRF
24
2
R103, R111
RES., CHIP, 0.02Ω, 1%, 2010
VISHAY, WSL2010R020FEA
25
1
R104
RES., CHIP, 127Ω, 1%, 0603
NIC NRC06F1270TRF
26
2
R105, R107
RES., CHIP, 100k, 1%, 0603
NIC NC06F1003TRF
27
1
R106
RES., CHIP, 49.9Ω, 1%, 0603
NIC NRC06F49R9TRF
28
2
R113, R114
RES., CHIP, 10Ω, 1%, 0603
NIC NRC06F10r0TRF
29
0
R9, R85, R86 OPT
RES., 0603
30
2
R12, R19
RES., CHIP, 0Ω, 0603
PANASONIC ERJ-3GEY0R00V
31
0
R84, R74, R80, R83 OPT
RES., CHIP, 2010
TEPRO(NAKOMA) RN6083
32
0
R15, OPT
33
1
R17
RES., CHIP, 10k, 1%, 0603
NIC NRC06F4871TRF
34
1
C16
CAP., X5R, 10nF, 25V, 10%, 0603
MURATA GRM18BR71E103KA37D
35
0
C17, OPT
36
0
C74, C80-C86 OPT
CAP., 1210
37
0
Q12, Q13, Q14, Q16 OPT
MOSFET SPEED SRS LFPAK
38
1
R42
RES., CHIP, 7.32k, 1%, 0603
VISHAY.,CRCW060311K3FKEA
39
1
FAB, PRINTED CIRCUIT BOARD
DEMO CIRCUIT 1740A
40
0
R44, OPT
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10
DEMO MANUAL DC1740A
PARTS LIST
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURE/PART NUMBER
Hardware—DC1740A-B
1
4
JP2-JP5
0.1" SINGLE ROW HEADER, 3 PIN
SAMTEC, TSW-103-07-L-S
2
2
JP2-JP5
SHUNT, 0.1" BLK
SAMTEC SNT-100-BK-G
3
4
J1, J2, J9, J11
JACK, BANANA
KEYSTONE 575-4
4
2
J3, J4
STUD, TESTPIN
PEM KFH-032-10
5
4
J3, J4 (X2)
NUT, BRASS 10-32
ANY #10-32
6
2
J3, J4
RING, LUG #10
KEYSTONE #10
7
2
J3, J4
WASHER, TIN PLATED BRASS
ANY #10
8
2
J5, J6
CONN, BNC, 5PINS
CONNEX, 112404
9
1
J7
CONN SOCKET 20 DUAL ROW RA (F)
MILL MAX 803-43-020-20-001
10
1
J8
PIN HEADER 20 DUAL ROW RA (M)
MILL MAX 802-43-020-20-001
11
1
J10
CONN HEADER 12POS 2MM STR DL PCB
FCI 98414-G06-12ULF
12
1
U4
IC, LDO REG W/SHTDWN 3.3V 8-SOIC
LINEAR TECH., LT1129CS8-3.3
13
1
U5
IC, LT1129CS8-5, S8 PACKAGE
LINEAR TECH, LT1129CS8-5
14
1
U6
IC, SERIAL EEPROM
MICROCHIP 24LC025-I/ST
15
2
SW3, SW4
CONNECTOR, SUB MINIATURE SLIDE
SWITCHES
C&K.,JS202011CQN
16
28
TP2-TP16, TP19-TP28, TP30,TP40, TP42
TESTPOINT, TURRET, 0.062"
MILL-MAX, 2308-2-00-80-00-00-07-0
17
4
STAND-OFF
STAND-OFF, NYLON 0.50" tall
KEYSTONE, 8833(SNAP ON)
dc1740afa
11
DEMO MANUAL DC1740A
SCHEMATIC DIAGRAM
dc1740afa
12
DEMO MANUAL DC1740A
SCHEMATIC DIAGRAM
dc1740afa
13
DEMO MANUAL DC1740A
SCHEMATIC DIAGRAM
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14
DEMO MANUAL DC1740A
SCHEMATIC DIAGRAM
dc1740afa
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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
15
DEMO MANUAL DC1740A
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:
This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT
OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety
measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union
directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date
of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU
OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or
agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and
observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
dc1740afa
16 Linear Technology Corporation
LT 1113 REV A • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2013
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