DC2174A - Demo Manual

DEMO MANUAL
DC2174A-A/DC2174A-B
LTC3882EUJ
High Efficiency Step-Down DC/DC
Converter with Power System Management
DESCRIPTION
Demonstration circuit 2174A is a high current, high efficiency, dual-phase synchronous buck converter featuring
the LTC®3882EUJ, a dual output voltage mode controller.
The LTC3882 has PMBus interface and power system
management functions.
There are two versions of the board available:
nn
nn
DC2174A-A: dual-phase dual-output configuration. Default output setting VOUT0 = 1.5V/35A, VOUT1 = 1.0V/35A
DC2174A-B: dual-phase single-output configuration.
Default output setting VOUT0 = 1.0V/70A
The DC2174A powers up to default settings and produces power based on configuration resistors or with
its non-volatile memory without the need for any serial
bus communication. This allows easy evaluation of the
DC-DC converter. To fully explore the extensive power
system management features of the devices, download
the GUI software 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 settings
within its onboard EEPROM, along with viewing telemetry
parameters that include voltage, current, temperature and
fault status.
GUI Download
The software can be downloaded from:
http://www.linear.com/LTpowerPlay
Design files for this circuit board are available at
http://www.linear.com/demo/DC2174A
L, LT, LTC, LTM, Linear Technology, the Linear logo and LTpowerPlay are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
PERFORMANCE SUMMARY
Specifications are at TA = 25°C
SYMBOL
PARAMETER
CONDITIONS
MIN
7
12
14
V
IOUT0 = 0A TO 35A, VIN = 7V to 14V
0.5
1.5
2.0*
V
35
A
2.0*
V
35
A
2.0*
V
70
A
VIN
Input Supply Range
VOUT0
Output Voltage Range (-A version)
IOUT0
Output Current Range (-A version)
VOUT1
Output Voltage Range (-A version)
IOUT1
Output Current Range (-A version)
VOUT0
Output Voltage Range (-B version)
IOUT0
Output Current Range (-B version)
FSW
Factory Default Switching (-A version)
FSW
Factory Default Switching (-B version)
EFFICIENCY Full Load Efficiency (-A version)
Full Load Efficiency (-B version)
TYP
0
IOUT0 = 0A TO 35A, VIN = 7V to 14V
0.5
1.0
0
IOUT1 = 0A TO 70A, VIN = 7V to 14V
0.5
1.0
0
VOUT0 = 1.5V, See Figure 4a
VOUT0 = 1.0V, See Figure 4a
VOUT0 = 1.0V, See Figure 4b
MAX
UNITS
500
kHz
450
kHz
90.9
88.6
88.6
%
%
%
*Note: The DC2174A uses 2.5V-rated low ESR PosCAP (Part No. 2R5TPE470M7) as output capacitors for optimized load transient performance. If > 2.0V
VOUT is needed, 4V- or 6.3V-rated output capacitors should be used.
dc2174afb
1
DEMO MANUAL
DC2174A-A/DC2174A-B
QUICK START PROCEDURE
Demonstration circuit 2174A makes it easy to set up to
evaluate the performance of the LTC3882. Refer to Figure 2
for the 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 C13 or C39. See
Figure 3 for the proper scope probe technique.
1. Make sure jumpers are in the following positions:
2174A-A Version
JUMPER
POSITION
FUNCTION
JP1
NC
Untie GPIO0B to GPIO1B
JP2
NC
Untie RUN0 to RUN1
JP4
ON
External 5V VDR for DrMOS
JP6
ON
External 5V VCC for LTC3882
2174A-B Version
JUMPER
POSITION
FUNCTION
JP1
C
Tie GPIO0B to GPIO1B
JP2
C
Tie RUN0 to RUN1
JP4
ON
External 5V VDR for DrMOS
JP6
ON
External 5V VCC for LTC3882
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 VOUT1+ to
VOUT0– and from VOUT1+ to GND.
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” session for
details.
Figure 1. Demo Setup with PC
2
dc2174afb
DEMO MANUAL
DC2174A-A/DC2174A-B
QUICK START PROCEDURE
SHUNT
–
IOUT0
VOUT0
VOUT0
LOAD
+
–
+
A
+
+
+
–
–
VIN
IIN
–
POWER
SUPPLY
DC1613A
CONNECTOR
+
IOUT1
–
VOUT1
LOAD
SHUNT
–
+
DC2174A F02a
VOUT1
Figure 2a. Power Test Setup for DC2174A-A
dc2174afb
3
DEMO MANUAL
DC2174A-A/DC2174A-B
QUICK START PROCEDURE
SHUNT
–
IOUT0_1
VOUT0
VOUT0
LOAD 1
+
–
+
B
+
+
+
–
–
VIN
IIN
–
FOR BETTER THERMAL DISTRIBUTION,
USE A PIECE OF LOW IMPEDANCE
METAL TO CONNECT TOP LAYER
VOUT COPPER AND PULL CURRENT
EVENLY FROM J3 TO J4 AND J9 TO J8.
POWER
SUPPLY
DC1613A
CONNECTOR
DC2174A F02b
+
IOUT0_2
–
VOUT0
LOAD 2
SHUNT
Figure 2b. Power Test Setup for DC2174A-B
4
dc2174afb
DEMO MANUAL
DC2174A-A/DC2174A-B
QUICK START PROCEDURE
Connecting a PC TO DC2174A
MEASURING OUTPUT RIPPLE VOLTAGE
You can use a PC to reconfigure the power management
features of the LTC3882 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. The dongle
can be hot plugged.
An accurate ripple measurement may be performed by
using the below configuration across C13 or C39.
Combining DC2174A with Other Digital Power Demo
Boards
+
–
COUT
VOUT
GND
Figure 3. Measuring Output Voltage Ripple
The DC2174A may be plugged together in a multi-board
array with other LTC power system management boards
using J12 and J13.
95
90
MEASURING EFFICIENCY (SEE FIGURE 4)
To accurately measure efficiency of any configuration, do
the following:
nn
nn
nn
75
65
Connect external 5V supply to VDR and VCC turrets
and measure its input current;
Measure VIN across the input ceramic capacitor (C10,
C6). Measure VOUT across the output ceramic capacitor (C13, C39);
80
70
Set JP4 and JP6 on the “OFF” position;
60
VOUT0 = 1.5V
VOUT1 = 1.0V
0
5
10
20
15
25
LOAD CURRENT (A)
30
35
DC2174A F04a
a) DC2174A-A, VIN = 12V, FSW = 500kHz, CCM
95
Add the loss from the external 5V supply into the efficiency calculation.
90
85
EFFICIENCY (%)
nn
EFFICIENCY (%)
85
80
75
70
65
60
VOUT0 = 1.0V
0
10
20
40
30
50
LOAD CURRENT (A)
60
70
DC2174A F04b
b) DC2174A-B, VIN = 12V, FSW = 450kHz, CCM
Figure 4. Typical Efficiency Curves of DC2174A
dc2174afb
5
DEMO MANUAL
DC2174A-A/DC2174A-B
QUICK START PROCEDURE
50mV/DIV
50mV/DIV
20mV/DIV
20mV/DIV
VPK-PK = 62.5mV
50µs/DIV
VPK-PK = 53.8mV
DC2174A F05
Figure 5. Load Transient Waveform DC2174A-A, VIN = 12V,
VOUT0 = 1.5V, FSW = 500kHz, 0 to 25% (8.75A) Load Step
50µs/DIV
DC2174A F07
Figure 7. Load Transient Waveform DC2174A-B, VIN = 12V,
VOUT0 = 1.0V, FSW = 450kHz, 0% to 25% (17.5A) Load Step
50mV/DIV
20mV/DIV
VPK-PK = 58.8mV
50µs/DIV
DC2174A F06
Figure 6. Load Transient Waveform DC2174A-A, VIN = 12V,
VOUT1 = 1.0V, FSW = 500kHz, 0% to 25% (8.75A) Load Step
LTpowerPlay SOFTWARE GUI
LTpowerPlay is a powerful Windows based development environment that supports Linear Technology
power system management ICs, including the LTC3880,
LTC3882, LTC3883, LTM4676, LTC2974, LTC2978 etc.
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 multichip 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
6
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 LTC3882’s DC2174A 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.
dc2174afb
DEMO MANUAL
DC2174A-A/DC2174A-B
LTpowerPlay SOFTWARE GUI
Figure 8. LTpowerPlay Main Interface
LTpowerPlay QUICK START PROCEDURE
The following procedure describes how to use LTpowerPlay
to monitor and change the settings of LTC3882 (taking
DC2174A-A as an example).
b. A green message box shows for a few seconds
in the lower left hand corner, confirming that the
LTC3882 is communicating:
1. Download and install the LTpowerPlay GUI:
http://linear.com/LTpowerPlay
2. Launch the LTpowerPlay GUI.
a. The GUI should automatically identify the
DC2174A-A. The system tree on the left hand side
should look like this:
dc2174afb
7
DEMO MANUAL
DC2174A-A/DC2174A-B
LTpowerPlay QUICK START PROCEDURE
c. In the Toolbar, click the “R” (RAM to PC) icon to
read the RAM from the LTC3882. This reads the
configuration from the RAM of LTC3882 and loads
it into the GUI.
Then, click the “W” (PC to RAM) icon to write
these register values to the LTC3882. After
finishing this step, you will see the output voltage
will change to 1.2V.
d. If you want to change the output voltage to a
different value, like 1.2V. In the Config tab, type in
1.2 in the VOUT_COMMAND box, like this:
If the write is successful, you will see the following
message:
e. You can save the changes into the NVM. In the tool
bar, click “RAM to NVM” button, as the following:
f. Save the demo board configuration to a (*.proj)
file. Click the Save icon and save the file. Name it
whatever you want.
8
dc2174afb
DEMO MANUAL
DC2174A-A/DC2174A-B
PARTS LIST
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
DC2174A-A
DC2174A-A Required Circuit Components
1
5
C5, C11, C36, C52, C53,
CAP., X7R, 0.1µF,16V, 10%, 0402
AVX, 0402YC104KAT2A
2
2
C45, C59
CAP., X7R, 0.1µF,16V, 10%, 0603
AVX, 0603YC104KAT2A
3
2
CBYP1, CBYP2
CAP., X7R 0.01µF 50V 10% 0603
AVX, 06035C103KAT2A
4
1
CIN1
CAP., X7R 1µF 16V 10% 1206
AVX, 1206YC105KAT2A
5
2
COUT3, COUT7
CAP., X5R 10µF 35V 1206
TAIYO YUDEN GMK316BJ106ML
6
1
D9
DIODE, SCHOTTKY, SOD-323
CENTRAL CMDSH-3TR
7
4
C6, C10, C33, C34
CAP., X5R, 22µF, 25V, 10%,1210
MURATA, GRM32ER61E226KE15L
8
6
C1, C2, C9, C8, C31, C35
CAP., X5R, 1µF, 10V, 20%, 0402
MURATA, GRM155R61A105ME15D
9
1
C47
CAP., X5R, 1µF, 16V, .10%, 0805
AVX, 0805YD105KAT2A
10
2
C3, C4
CAP., OS-CON, 330µF, 16V, 20%, F12
PANASONIC, 16SVP330M
11
1
C7
CAP., X5R 0402 4.7µF 6.3V 20%
SAMSUNG, CL05A475MQ5NRNC
12
8
C12, C13, C14, C23, C38, C39, C40, C43 CAP., X5R, 100µF, 6.3V, 20%,1206
MURATA, GRM31CR60J107ME39L
13
6
C15, C16, C26, C27, C17, C19
CAP., POSCAP, 470µF, 2.5V, D2E SIZE
PANASONIC, 2R5TPE470M7
14
0
C18, C28 (OPT)
OPTIONAL
15
0
D4, D7 (OPT)
OPTIONAL
16
2
C20, C42
CAP., X5R, 0.22µF, 16V, 10%, 0402
TDK, C1005X5R1C224K
17
1
C21
CAP., X7R, 1.5nF, 50V, 10%, 0402
MURATA, GRM155R71H152KA01D
18
1
C22
CAP., X7R, 220pF, 50V, 10%, 0402
MURATA, GRM155R71H221KA01D
19
2
C29, C44
CAP., X7R, 0.01µF,16V, 10%, 0603
AVX, 0603YC103KAT2A
20
2
C32, C48
CAP., X7R, 0.01µF,16V, 10%, 0402
AVX, 0402YC103KAT2A
21
1
C30
CAP., NP0, 10pF, 25V, 10%, 0402
AVX, 04023A100KAT2A
22
2
C57, C58
CAP., X7R, 0.1µF, 16V, 20%, 0805
AVX, 0805YC104MAT2A
23
1
D8
DIODE, ULTRA LOW SCHOTTKY RECTIFIER
NXP SEMI. PMEG2005AEL,315
24
2
L1, L2
IND., 0.17µH
COOPER., FP1007R3-R17-R
25
2
U1, U3
IC, HIGH FREQUENCY DrMOS MODULE
FAIRCHILD, FDMF5820DC
26
1
U2
IC, LTC3882EUJ, QFN 6mm x 6mm
LINEAR TECH., LTC3882EUJ#10BP-1PBF-ES
27
1
U5
IC EEPROM 2KBIT 400kHZ 8TSSOP
MICROCHIP, 24LC025-I/ST
28
1
U6
IC, LT3029IMSE, MSOP, 16PIN
LTC., LT3029IMSE#PBF
LED, GREEN RECT CLEAR 0603
LITE ON, LTST-C193KGKT-5A
DC2174A-A Additional Demo Board Circuit Components
1
2
D5, D6
2
1
D10
LED, RED RECT CLEAR 0603
LITE ON, LTST-C193KRKT-5A
3
2
Q1, Q6
TRANS, PNP GP 40V 200MA SC75-3
ON SEMI, MMBT3906TT1G
4
1
Q3
MOSFET, SPEED SRS 30V 30A LFPAK
RENESAS, RJK0305DPB-00#J0
5
2
Q19, Q20
MOSFET, P-CH 20V 0.58A SOT-23
VISHAY, TP0101K-T1-E3
6
2
Q21, Q22
MOSFET, N-CH 60V 115MA SOT23
DIODES INC., 2N7002-7-F
7
2
RSD1, RSD2
RES., CHIP, 10k, 5%, 0603
VISHAY, CRCW060310K0JKEA
8
1
R1
RES., CHIP, 1Ω, 1%, 0402
VISHAY, CRCW04021R00FKED
9
2
R2, R15
RES., CHIP, 24.9k, 1%, 0402
VISHAY, CRCW040224K9FKED
10
2
R5, R25
RES., CHIP, 0Ω, 0402
VISHAY, CRCW04020000Z0ED
11
5
R16, R24, R71, R73, R83,
RES., CHIP, 0Ω, 0603
VISHAY, CRCW06030000Z0EA
12
1
R45
SENSE RES., 0.010Ω, 1W, 1%, 2512
PANASONIC, ERJ-M1WSF10MU
dc2174afb
9
DEMO MANUAL
DC2174A-A/DC2174A-B
PARTS LIST
ITEM
QTY
REFERENCE
PART DESCRIPTION
13
0
R23, R29, R30, R31, R32, R33, R34,
R35, R36, R37, R38, R39, R40, R68,
R72, R74, R75, R78, R82, R90, R91,
R92
OPTIONAL
14
2
R7, R27
RES., CHIP, 2.67k, 1%, 0402
VISHAY, CRCW04022K67FKED
15
1
R9
RES., CHIP, 499Ω, 1%, 0402
VISHAY, CRCW0402499RFKED
16
11
R10, R11, R13, R17, R19, R21, R26,
R28, R41, R42, R86
RES., CHIP, 10k, 1%, 0603
VISHAY, CRCW060310K0FKEA
17
1
R12
RES., CHIP, 7.32k, 1%, 0402
VISHAY, CRCW04027K32FKED
18
4
R57, R58, R59, R60
RES., CHIP, 1k, 1%, 0402
VISHAY, CRCW04021K00FKED
19
3
R14, R63, R65
RES., CHIP, 2k, 1%, 0603
VISHAY, CRCW06032K00FKEA
20
2
R64, R66
RES., CHIP, 6.19k, 1%, 0603
VISHAY, CRCW06036K19FKEA
21
2
R69, R70
RES., CHIP, 10Ω, 1%, 0603
VISHAY, CRCW060310R0FKEA
22
2
R76, R77
RES., CHIP, 4.99k, 1%, 0603
VISHAY, CRCW06034K99FKEA
23
2
R80, R81
RES., CHIP, 200Ω, 1%, 0603
VISHAY, CRCW0603200RFKED
24
1
R84
RES., CHIP, 127Ω, 1%, 0603
VISHAY, CRCW0603127RFKEA
25
1
R87
RES., CHIP, 15.8k, 1%, 0603
VISHAY, CRCW060315K8FKEA
22
0
R62, R67, R98, R101
OPTIONAL
23
0
R61, R100
OPTIONAL
24
1
R22
RES., CHIP, 0Ω, 0603
25
0
C37, C41
OPTIONAL
MANUFACTURER/PART NUMBER
VISHAY, CRCW06030000Z0EA
26
1
R18
RES., CHIP, 499Ω, 1%, 0402
VISHAY, CRCW0402499RFKED
27
1
R20
RES., CHIP, 7.32k, 1%, 0402
VISHAY, CRCW04027K32FKED
28
1
C50
CAP., NP0, 10pF, 25V, 10%, 0402
AVX, 04023A100KAT2A
29
1
C54
CAP., X7R, 220pF, 50V, 10%, 0402
MURATA, GRM155R71H221KA01D
30
1
C55
CAP., X7R, 1.5nF, 50V, 10%, 0402
MURATA, GRM155R71H152KA01D
31
1
R48
SENSE RES., 0.001Ω, 1W, 1%, 2512
PANASONIC, ERJ-M1WTF1MOU
32
0
R53
OPTIONAL
DC2174A-A Hardware: For Demo Board Only
1
28
E1 TO E4, E7-E19, E21-E31
TESTPOINT, TURRET, .094"
MILL-MAX, 2503-2-00-80-00-00-07-0
2
2
J1, J2
BANANA SMALL
KEYSTONE, 575-4
3
4
J3, J4, J8, J9
STUD, TESTPIN
PEM, KFH-032-10
4
8
J3, J4, J8, J9 ( X2 )
NUT, BRASS 10-32
ANY #10-32M/S BR PL
5
4
J3, J4, J8, J9
RING, LUG #10
KEYSTONE, 8205
6
4
J3, J4, J8, J9
WASHER, TIN PLATED BRASS
ANY #10 EXT BZ TN
7
4
JP1, JP2, JP4, JP6
HEADER, 3 PIN 0.079 SINGLE ROW
WURTH, 620 003 111 21
8
4
JP1, JP2, JP4, JP6
SHUNT
SAMTEC, 2SN-BK-G
9
2
SW3, SW4
CONNECTOR, SUB MINIATURE SLIDE SWITCHES C&K.,JS202011CQN
10
3
J7, J10, J14
CONN, BNC, 5PINS
CONNEX, 112404
11
1
J11
HEADER 12POS 2mm STR DL PCB
FCI, 98414-G06-12ULF
12
1
J12
CONN RECEPT 2mm DUAL R/A 14POS (F)
SULLINS, NPPN072FJFN-RC
13
1
J13
HEADER 14POS 2mm R/A GOLD (M)
MOLEX, 87760-1416
14
1
J15
HEADER, 4 PINS, SHROUDED
HIROSE, DF3A-4P-2DSA
10
dc2174afb
DEMO MANUAL
DC2174A-A/DC2174A-B
PARTS LIST
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
CAP., X7R, 0.1µF,16V, 10%, 0402
AVX, 0402YC104KAT2A
DC2174A-B
DC2174A-B Required Circuit Components
1
5
C5, C11, C36, C52, C53,
2
2
C45, C59
CAP., X7R, 0.1µF,16V, 10%, 0603
AVX, 0603YC104KAT2A
3
2
CBYP1, CBYP2
CAP., X7R 0.01µF 50V 10% 0603
AVX, 06035C103KAT2A
4
1
CIN1
CAP., X7R 1µF 16V 10% 1206
AVX, 1206YC105KAT2A
5
2
COUT3, COUT7
CAP., X5R 10µF 35V 1206
TAIYO YUDEN GMK316BJ106ML
6
1
D9
DIODE, SCHOTTKY, SOD-323
CENTRAL CMDSH-3TR
7
4
C6, C10, C33, C34
CAP., X5R, 22µF, 25V, 10%,1210
MURATA, GRM32ER61E226KE15L
8
6
C1, C2, C9, C8, C31, C35
CAP., X5R, 1µF, 10V, 20%, 0402
MURATA, GRM155R61A105ME15D
9
1
C47
CAP., X5R, 1µF, 16V, .10%, 0805
AVX, 0805YD105KAT2A
10
2
C3, C4
CAP., OS-CON, 330µF, 16V, 20%, F12
PANASONIC, 16SVP330M
11
1
C7
CAP., X5R 0402 4.7µF 6.3V 20%
SAMSUNG, CL05A475MQ5NRNC
12
8
C12, C13, C14, C23, C38, C39, C40, C43 CAP., X5R, 100µF, 6.3V, 20%,1206
MURATA, GRM31CR60J107ME39L
13
6
C15, C16, C26, C27, C17, C19
CAP., POSCAP, 470µF, 2.5V, D2E SIZE
PANASONIC, 2R5TPE470M7
14
0
C18, C28 (OPT)
OPTIONAL
15
0
D4, D7 (OPT)
OPTIONAL
16
2
C20, C42
CAP., X5R, 0.22µF, 16V, 10%, 0402
TDK, C1005X5R1C224K
17
1
C21
CAP., X7R, 1.5nF, 50V, 10%, 0402
MURATA, GRM155R71H152KA01D
18
1
C22
CAP., X7R, 220pF, 50V, 10%, 0402
MURATA, GRM155R71H221KA01D
19
2
C29, C44
CAP., X7R, 0.01µF,16V, 10%, 0603
AVX, 0603YC103KAT2A
20
2
C32, C48
CAP., X7R, 0.01µF,16V, 10%, 0402
AVX, 0402YC103KAT2A
21
1
C30
CAP., NP0, 10pF, 25V, 10%, 0402
AVX, 04023A100KAT2A
22
2
C57, C58
CAP., X7R, 0.1µF, 16V, 20%, 0805
AVX, 0805YC104MAT2A
23
1
D8
DIODE, ULTRA LOW SCHOTTKY RECTIFIER
NXP SEMI. PMEG2005AEL,315
24
2
L1, L2
IND., 0.17µH
COOPER., FP1007R3-R17-R
25
2
U1, U3
IC, HIGH FREQUENCY DrMOS MODULE
FAIRCHILD, FDMF5820DC
26
1
U2
IC, LTC3882EUJ, QFN 6mm x 6mm
LINEAR TECH., LTC3882EUJ#10BR-1PBF-ES
27
1
U5
IC EEPROM 2KBIT 400KHZ 8TSSOP
MICROCHIP, 24LC025-I/ST
28
1
U6
IC, LT3029IMSE, MSOP, 16PIN
LTC., LT3029IMSE#PBF
DC2174A-B Additional Demo Board Circuit Components
1
2
D5, D6
LED, GREEN RECT CLEAR 0603
LITE ON, LTST-C193KGKT-5A
2
1
D10
LED, RED RECT CLEAR 0603
LITE ON, LTST-C193KRKT-5A
3
2
Q1, Q6
TRANS, PNP GP 40V 200MA SC75-3
ON SEMI, MMBT3906TT1G
4
1
Q3
MOSFET, SPEED SRS 30V 30A LFPAK
RENESAS, RJK0305DPB-00#J0
5
2
Q19, Q20
MOSFET, P-CH 20V 0.58A SOT-23
VISHAY, TP0101K-T1-E3
6
2
Q21, Q22
MOSFET, N-CH 60V 115MA SOT23
DIODES INC., 2N7002-7-F
7
2
RSD1, RSD2
RES., CHIP, 10k, 5%, 0603
VISHAY, CRCW060310K0JKEA
8
1
R1
RES., CHIP, 1Ω, 1%, 0402
VISHAY, CRCW04021R00FKED
9
2
R2, R15
RES., CHIP, 24.9k, 1%, 0402
VISHAY, CRCW040224K9FKED
10
2
R5, R25
RES., CHIP, 0Ω, 0402
VISHAY, CRCW04020000Z0ED
11
5
R16, R24, R71, R73, R83,
RES., CHIP, 0Ω, 0603
VISHAY, CRCW06030000Z0EA
dc2174afb
11
DEMO MANUAL
DC2174A-A/DC2174A-B
PARTS LIST
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
12
1
R45
SENSE RES., 0.010Ω 1W 1% 2512
PANASONIC, ERJ-M1WSF10MU
13
0
R23, R29, R30, R31, R32, R33, R34,
R35, R36, R37, R38, R39, R40, R68,
R72, R74, R75, R78, R82, R90, R91,
R92
OPTIONAL
14
2
R7, R27
RES., CHIP, 2.67k, 1%, 0402
VISHAY, CRCW04022K67FKED
15
1
R9
RES., CHIP, 499Ω, 1%, 0402
VISHAY, CRCW0402499RFKED
16
11
R10, R11, R13, R17, R19, R21, R26,
R28, R41, R42, R86
RES., CHIP, 10k, 1%, 0603
VISHAY, CRCW060310K0FKEA
17
1
R12
RES., CHIP, 7.32k, 1%, 0402
VISHAY, CRCW04027K32FKED
18
4
R57, R58, R59, R60
RES., CHIP, 1k, 1%, 0402
VISHAY, CRCW04021K00FKED
19
2
R14, R63, R65
RES., CHIP, 2k, 1%, 0603
VISHAY, CRCW06032K00FKEA
20
2
R64, R66
RES., CHIP, 6.19k, 1%, 0603
VISHAY, CRCW06036K19FKEA
21
2
R69, R70
RES., CHIP, 10Ω, 1%, 0603
VISHAY, CRCW060310R0FKEA
22
2
R76, R77
RES., CHIP, 4.99k, 1%, 0603
VISHAY, CRCW06034K99FKEA
23
2
R80, R81
RES., CHIP, 200Ω, 1%, 0603
VISHAY, CRCW0603200RFKED
24
1
R84
RES., CHIP, 127Ω, 1%, 0603
VISHAY, CRCW0603127RFKEA
25
1
R87
RES., CHIP, 15.8k, 1%, 0603
VISHAY, CRCW060315K8FKEA
22
4
R62, R67, R98, R101
RES., CHIP, 0Ω, 0402
VISHAY, CRCW04020000Z0ED
23
2
R61, R100
RES., CHIP, 0Ω, 0603
VISHAY, CRCW06030000Z0EA
24
0
R22
OPTIONAL
25
2
C37, C41
CAP., NP0, 56pF, 25V, 10%, 0402
26
0
R18
OPTIONAL
27
0
R20
OPTIONAL
28
0
C50
OPTIONAL
29
0
C54
OPTIONAL
30
0
C55
OPTIONAL
31
2
R48, R53
SENSE RES., 0.001Ω, 1W, 1%, 2512
AVX, 04025A560GAT2A
PANASONIC, ERJ-M1WTF1MOU
DC2174A-B Hardware: For Demo Board Only
1
28
E1-E4, E7-E19, E21-E31
TESTPOINT, TURRET, .094"
MILL-MAX, 2503-2-00-80-00-00-07-0
2
2
J1, J2
BANANA SMALL
KEYSTONE, 575-4
3
4
J3, J4, J8, J9
STUD, TESTPIN
PEM, KFH-032-10
4
8
J3, J4, J8, J9 ( X2 )
NUT, BRASS 10-32
ANY #10-32M/S BR PL
5
4
J3, J4, J8, J9
RING, LUG #10
KEYSTONE, 8205
6
4
J3, J4, J8, J9
WASHER, TIN PLATED BRASS
ANY #10 EXT BZ TN
7
4
JP1, JP2, JP4, JP6
HEADER, 3 PIN 0.079 SINGLE ROW
WURTH, 620 003 111 21
8
4
JP1, JP2, JP4, JP6
SHUNT
SAMTEC, 2SN-BK-G
9
2
SW3, SW4
CONNECTOR, SUB MINIATURE SLIDE SWITCHES C&K.,JS202011CQN
10
3
J7, J10, J14
CONN, BNC, 5PINS
CONNEX, 112404
11
1
J11
HEADER 12POS 2mm STR DL PCB
FCI, 98414-G06-12ULF
12
1
J12
CONN RECEPT 2mm DUAL R/A 14POS (F)
SULLINS, NPPN072FJFN-RC
13
1
J13
HEADER 14POS 2mm R/A GOLD (M)
MOLEX, 87760-1416
14
1
J15
HEADER, 4 PINS, SHROUDED
HIROSE, DF3A-4P-2DSA
12
dc2174afb
A
B
C
D
VIN
VDD25
0603
R39 OPT
R37 OPT
R35 OPT
R33 OPT
R31 OPT
R29 OPT
R23 OPT
R41 10k 0603
R28 10k 0603
R21 10k 0603
R19 10k 0603
R17 10k 0603
R14 2k
R13 10k 0603
R11 10k 0603
VIN
C3
330uF
16V
ASEL0
10k
R26 0603
WP
RUN1
RUN0
GPIO1B
GPIO0B
SHARE_CLK
SYNC
ALERTB
SDA
SCL
+
R40 OPT
5
PHAS_CFG
R38 OPT
FREQ_CFG
R36 OPT
VOUT1_CFG
R34 OPT
VOUT0_CFG
R32 OPT
ASEL1
R30 OPT
VDD25
VDD33
R10 10k 0603
E4
E3
E2
J2
J1
VDD33
VDD25
VDD33
GND
GND
7V-14V
VIN
E1
+
C4
330uF
16V
1
RUN1
RUN0
GPIO1B
GPIO0B
ALERTB
SDA
SCL
RUN0
GPIO0B
VSENSE0+
IAVG0
VFB1
COMP1
*
C37
IAVG1
PHAS_CFG
FREQ_CFG
VOUT1_CFG
VOUT0_CFG
ASEL1
ASEL0
WP
SYNC
*
C41
31
39
21
20
19
18
17
16
23
8
24
15
14
13
12
11
10
9
IAVG1
IAVG0
PHAS_CFG
FREQ_CFG
VOUT1_CFG
VOUT0_CFG
ASEL1
ASEL0
WP
SYNC
1uF
C8
VDD25
U2
LTC3882EUJ
SHARE_CLK
RUN1
RUN0
GPIO1
GPIO0
ALERT
SDA
SCL
C7
2.2uF
VDD33
4
4
VCC
*
*
*
R100
R101
*
R98
*
R67
*
R62
R61
VDD33
BG0/EN0
BG1/EN1
TG1/PWM1
ISENSE1+
ISENSE1-
VSENSE1+
GPIO1B
VSENSE1+
4
RUN1
FB1
COMP1
TSNS1
TSNS0
COMP0
FB0
VSENSE0-
VSENSE0+
ISENSE0-
ISENSE0+
COMP0
IAVG1
C9
1uF
TG0/PWM0
OPTIONAL FOR 2-PHASE OPERATION
C5
0.1uF
16V
VDD33
SHARE_CLK
IAVG0
R1
25
VDD33
22
VDD25
IAVG_GND
5
26
VCC
35
*
*
ISNS1+
TG1
32
27
*
*
P3
C35
VDR 1uF
*
499
R9
R18
R58 1k
R57 1k
VFB1
C55
1.5nF
C21
VFB0
R60 1k
R59 1k
C2
1uF
PGND
PGND
PGND
GL
GL
ZCD#
GL
EN/FAULT#
PWM
VSENSE1+
VSENSE0+
28
15
34
35
27
2
31
1
C52
R15
0.1uF 24.9K
28
15
34
35
27
2
31
1
C53
R2
0.1uF 24.9K
PGND
PGND
PGND
GL
GL
ZCD#
GL
EN/FAULT#
PWM
32
U1
AGND
1uF
C31
1. ALL RESISTORS ARE IN OHMS, 0402.
ALL CAPACITORS ARE IN MICROFARADS, 0402.
2. INSTALL SHUNTS AS SHOWN.
PGND
VDR
VIN
9
L1
C36
L2
C42
R27
2.67k
0.22uF
OPT
C48
10nF
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
2
C13
OPT
220pF
C54
100uF
1206
100uF
1206
100uF
1206
100uF
1206
C39
HAORAN W.
APP ENG.
SCALE = NONE
HZ
PCB DES.
APPROVALS
C38
C14
100uF
1206
0
OPT
C26
470uF
C19
470uF
C27
470uF
+
0603
R24 0
R16
0
0603
J4
J3
E8
E7
OPT
0
C28
OPT
+
*
R22
J8
J9
VOUT1+
GND
E19
GND
VOUT1
ADJ. UP TO 2.5V
MAX 35A
E9
VOUT1-
VOUT0+
GND
N/A
DATE:
SIZE
1
DEMO CIRCUIT 2174A
LTC3882EUJ
Monday, January 25, 2016
IC NO.
SHEET 1
1
OF 3
REV.
HIGH EFFICIENCY DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
0603
DATE
6-12-14
VOUT0
ADJ. UP TO 2.5V
MAX 35A
HAORAN W.
APPROVED
R61,R62,R67,R98,R100,R101
C18
OPT
VSENSE1+
0.001
OPT
R53
C17
470uF
+
TECHNOLOGY
+
+
VOUT1
56pF
OPT
C37,C41 R22
VSENSE0-
VSENSE0+
C16
470uF
C15
470uF
+
1
DESCRIPTION
REVISION HISTORY
PRODUCTION
VOUT0
+
1
REV
+
__
ECO
TITLE: SCHEMATIC
100uF
1206
C40
OPT
1.5nF
C55
MMBT3906LT1G
C43
Q6
OPT
10pF
C50
C12
100uF
1206
MMBT3906LT1G
C23
Q1
100uF
1206
7.32k
R20
VIN
TSNS1
0.17uH
FP1007R3-R17-R
100nF
R25 0
C34
22uF
1210
OPT
C33
22uF
1210
499
R18
0.22uF
DC2174A-B
*
C20
R7
2.67k
C32
10nF
TSNS0
0.17uH
FP1007R3-R17-R
100nF
0
C10
22uF
1210
DC2174A-A
C11
R5
C6
22uF
1210
CUSTOMER NOTICE
20
19
18
17
16
7
5
33
11
10
20
19
18
17
16
7
5
33
11
10
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.
SW
SW
SW
SW
SW
PHASE
BOOT
VIN
VIN
VIN
SW
SW
SW
SW
SW
PHASE
BOOT
VIN
VIN
VIN
VIN
2
Figure 9. DC2174A Demo Circuit Schematic, Page 1
3
VIN
U3 FDMF5820DC
AGND
VDR
FDMF5820DC
PGND
NOTE: UNLESS OTHERWISE SPECIFIED
P4
VDR
C54
TSNS1
10pF
VSENSE1+
COMP1
C50
R20
ISNS1-
28
C30
TSNS0
VDR
C22 220pF
VSENSE0COMP0
R12 7.32k
33
34
30
29
3
2
1
40
VSENSE0+
ISNS0-
36
ISNS0+
38
TG0
37
6
7
P2
P1
VDR
C1
1uF
4
3
3
VCC
PGND
14
3
VCC
VINSNS
GND
41
30
TMON
PGND
13
30
TMON
12
32
PGND
12
PGND
14
29
SW
25
SW
24
PGND
13
AGND
PGND
AGND
SW
24
AGND
SW
PVCC
SW
25
29
PVCC
23
6
26
4
AGND
6
NC
SW
23
SW
26
8
VIN
SW
VIN
SW
21
9
VIN
22
NC
SW
8
VIN
SW
22
SW
21
5
A
B
C
D
DEMO MANUAL
DC2174A-A/DC2174A-B
SCHEMATIC DIAGRAM
13
dc2174afb
A
B
C
D
GND
GND
E17
E16
JP6
VCC
5
OFF
ON
1
2
3
C59
0.1uF
0603
RSD1
10K
0603
VIN
1
2
GND
VCC
D9
E14
E12
1206
COUT7
10uF
VCC
CBYP1
0.01uF
0603
R65
2K
0603
16
1
3
4
15
CIN1
1uF
U6
1206
LT3029IMSE
R64
6.19K
0603
VIN
4
ADJ1
BYP1
VOUT1
VOUT1
SHDN1
VIN
14
VIN1
12
VIN2
13
VIN1
NC
2
GND
5
11
9
8
6
7
10
CBYP2
0.01uF
0603
R63
2K
0603
R66
6.19K
0603
3
COUT3
10uF
1206
VDR
VIN
1
2
3
E15
E13
RSD2
10K
JP4
0603
VDR
GND
VDR
OFF
ON
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
2
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.
PULSE IN
E10
1
E11
HAORAN W.
SCALE = NONE
HZ
PCB DES.
APP ENG.
APPROVALS
C58
0.1uF
0805
GND
J14
R45
0.01
2512
1
R53
*
R48
0.001
2512
1
J10
J7
VOUT1
VOUT0
IOUT
TST
DATE:
N/A
SIZE
1
DEMO CIRCUIT 2174A
LTC3882EUJ
Monday, January 25, 2016
IC NO.
SHEET 2
OF 3
REV.
1
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
VOUT1
NOTE:
PULSE OUT
10mV / AMP
C47
1uF
0805
1
HIGH EFFICIENCY DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT
TECHNOLOGY
C57
0.1uF
0805
VOUT1
TITLE: SCHEMATIC
VOUT0
10K
0603
R42
4
Q3
RJK0305DPB
DYNAMIC LOAD CIRCUIT
DO NOT EXCEED 5% DUTY CYCLE!
VOUT0
2
Figure 10. DC2174A Demo Circuit Schematic, Page 2
ADJ2
BYP2
VOUT2
VOUT2
SHDN2
VIN2
GND
17
3
2
3
4
5
5
1
2
3
4
2
3
4
5
14
2
3
4
5
5
A
B
C
D
DEMO MANUAL
DC2174A-A/DC2174A-B
SCHEMATIC DIAGRAM
dc2174afb
A
B
C
GPIO0B
GND
E21
4
3
2
1
1
SDA
SCL
WP
VCC
D5
3V3
4
3
2
1
100nF
C45 0603
3V3
AUX3V4
EESCL
EESDA
6
5
5
2N7002A GPIO1B
Q21
GREEN
GPIO0
R81
200
0603
EEWP
7
8 AUXVCC
1
2
3
4
5
6
7
8
9
10
11
12
24LC025-I/ST
VSS
A2
A1
A0
U5
TO DC1613A
AUXP
SDA
GND
SCL
LGKPWR
ALERTB
GPIO_1
OUTEN_0
OUTEN_1
GND
AUXSCL
AUXSDA
J11
TO DC2086A
AUX3V4
SCL
GND
SDA
J15
VDD33
1
D6
2
2N7002A
Q22
GREEN
ALERTB
ALERTB
E18
AUX3V4
R80
200
0603
GPIO1
R77
4.99K
0603
D8
3V3
R76
4.99K
0603
1
3
3
2
1
4
D10
R75
E22
ALERTB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
SCL
3V3
OPT
R84
127
0603
ALERTB
RED
Si2365EDS
Q20
OPT
R74
0603
R86 10K
3
R87
15.8k
0603
Q19
Si2365EDS
E24
SCL
2
VDD33
VIN
R82
OPT
1206
R83
0
0603
FAULTB
CTRL
ALERTB
SDA
SHARE_CLK
SCL
RESETB
AUXP
UNUSED
UNUSED
GND
GND
12V
12V
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
3
OPT
J12 DEMO HEADER (F)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R72
1
D7
OPT
R90
OPT
SW3
RUN1
C
NC
GPIO0-GPIO1
3
JP1
OFF
5
ON
2
C29
10nF
0603
R69
10
0603
R91
OPT
1
SW4
RUN0
C
NC
RUN0-RUN1
3
JP2
D4
OPT
2
OFF
5
ON
2
C44
10nF
0603
R70
10
0603
1
GPIO1B
GPIO0B
RUN0
RUN1
E31
SGND
RUN1
E30
RUN0
E29
GPIO0B
E28
GPIO1B
E27
HAORAN W.
APP ENG.
2
SCALE = NONE
HZ
PCB DES.
APPROVALS
www.linear.com
DATE:
N/A
SIZE
1
DEMO CIRCUIT 2174A
LTC3882EUJ
Monday, January 25, 2016
IC NO.
SHEET 3
OF 3
REV.
1
LTC Confidential-For Customer Use Only
Fax: (408)434-0507
HIGH EFFICIENCY DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT
TITLE: SCHEMATIC
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
PSM STACKING CONNECTORS:
J12, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn. NPPN072FJFN-RC
J13, MALE, CONN HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416
R78
OPT
0603
R71 0
0603
R73 0
CUSTOMER NOTICE
R92
OPT
E26
E25
R68 OPT
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.
VIN
3V3
SHARE_CLK
SYNC
SYNC
SHARE_CLK
Figure 11. DC2174A Demo Circuit Schematic, Page 3
VIN
3V3
J13DEMO HEADER (M)
FAULTB
CTRL
ALERTB
SDA
SHARE_CLK
SCL
RESETB
AUXP
UNUSED
UNUSED
GND
GND
12V
12V
SDA
E23
SDA
2
ALL PARTS ON THIS PAGE ARE FOR DEMO BOARD ONLY, NOT NEEDED IN CUSTOMER DESIGN
2
3
D
3
2
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.
2
4
1
4
1
6
3
4
1
6
3
5
A
B
C
D
DEMO MANUAL
DC2174A-A/DC2174A-B
SCHEMATIC DIAGRAM
dc2174afb
15
DEMO MANUAL
DC2174A-A/DC2174A-B
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
16 Linear Technology Corporation
dc2174afb
LT 0216 REV B • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2015
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