DC2000A - Demo Manual

DEMO MANUAL DC2000A
LTC3875EUJ
High Efficiency, Dual-Output Synchronous Buck
Converter with Very Low DCR Inductor
Description
Demonstration circuit 2000A is a high efficiency, high
density, synchronous buck converter with a 4.5V to 14V
input range. It can supply 30A maximum load current at
a 1.0V output and at a 1.5V output separately. The demo
board includes a LTC®3875EUJ controller. The LTC3875
is a feature-rich dual phase synchronous buck controller
with very low DCR current sensing capability, on-chip
drivers and remote output voltage sensing. This board
is set up with a 0.32mΩ DCR inductor. The temperature
compensation function can guarantee accurate current
limit over a wide temperature range with DCR sensing.
The LTC3875 is suitable for inputs from 4.5V to 38V and
outputs up to 3.5V. It can provide a high efficiency, high
power density and versatile power solution for telecom and
datacom systems, industrial and medical instruments, DC
Performance Summary
PARAMETER
power distribution systems and computer systems. The
LTC3875 is available in a 40-pin 6mm × 6mm QFN package.
To shut down the converter, set the RUN1/RUN2 pin
voltage below 1.2V (SW1: OFF; SW2: OFF). Use the JP1
jumper to select burst mode, pulse-skipping mode or
forced continuous mode operation at light load. Switching
frequency is pre-set at about 400kHz, and it can be easily
modified from 250kHz to 770kHz. An on-board dynamic
circuit is also available for the transient test. Please see
the LTC3875 data sheet for more detailed information.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2000A
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Specifications are at TA = 25°C
CONDITIONS
Input Voltage Range
VALUE
4.5V to 14V
Output Voltage, VOUT1
VIN = 4.5V to 14V, IOUT1 = 0A to 30A
1.0V ±2%
Maximum Output Current, IOUT1
VIN = 4.5V to 14V, VOUT1 = 1.0V
Typical Efficiency, VOUT1
VIN = 12V, VOUT1 = 1.0 V, IOUT1 = 30A
86.9%
Output Voltage, VOUT2
VIN = 4.5V to 14V, IOUT2 = 0A to 30A
1.5V ±2%
Maximum Output Current, IOUT2
VIN = 4.5V to 14V, VOUT2 = 1.5V
Typical Efficiency, VOUT2
VIN = 12V, VOUT2 = 1.5V, IOUT2 = 30A
Typical Switching Frequency
30A
30A
89.6%
400kHz
dc2000af
1
DEMO MANUAL DC2000A
Quick Start Procedure
Demonstration circuit 2000A is easy to set up to evaluate
the performance of the LTC3875EUJ. Refer to Figure 1 for
the proper measurement equipment setup and follow the
procedure below:
1.With power off, connect the input power supply to VIN
(4.5V to 14V) and GND (input return).
2.Connect the 1.0V output load between VOUT1 and GND
(Initial load: no load).
3.Connect the 1.5V output load between VOUT2 and GND
(Initial load: no load).
4.Connect the DVMs to the input and outputs. Set default
jumper position: JP1: CCM; SW1: ON; SW2: ON.
2
5.Turn on the input power supply and check for the proper
output voltages. VOUT1 should be 1.0V ±2%. And VOUT2
should be 1.5V ±2%
6.Once the proper output voltages are established, adjust the loads within the operating range and observe
the output voltage regulation, ripple voltage and other
parameters.
Note: When measuring the output or input voltage ripple,
do not use the long ground lead on the oscilloscope probe.
See Figure 2 for the proper scope probe technique. Short,
stiff leads need to be soldered to the (+) and (–) terminals
of an output capacitor. The probe’s ground ring needs to
touch the (–) lead and the probe tip needs to touch the
(+) lead.
dc2000af
DEMO MANUAL DC2000A
Quick Start Procedure
-
+ V 1mΩ + Vout1 -
Load (30A) + + Load (30A) -
Vout2 VIN + 4.5V-­‐14V V 1mΩ V + -
-
-
+ V A
V -
Figure 1. Proper Measurement Equipment Setup
+
VOUT
–
COUT
GND
Figure 2. Measuring Output Voltage Ripple
dc2000af
3
DEMO MANUAL DC2000A
100
100
90
90
EFFICIENCY (%)
EFFICIENCY (%)
Quick Start Procedure
80
40
60
50
5
15
10
20
LOAD CURRENT (A)
25
40
60
4.5VIN
12VIN
0
80
30
DC2000A F03
Figure 3. Efficiency vs Load Current at VOUT1 = 1V
50
4.5VIN
12VIN
0
5
15
10
20
LOAD CURRENT (A)
25
30
DC2000A F04
Figure 4. Efficiency vs Load Current at VOUT2 = 1.5V
Figure 5. Thermal Performance at VIN = 12V, VOUT1 = 1V, IOUT1 = 30A, VOUT2 = 1.5V, IOUT2 = 30A, No Forced Air
4
dc2000af
DEMO MANUAL DC2000A
Quick Start Procedure
VOUT1
20MHz BW
50mV/DIV
VOUT2
20MHz BW
5mV/DIV
5µs/DIV
DC2000A F06
5µs/DIV
Figure 6. Output Voltage Ripple at VIN = 12V,
VOUT1 = 1V, IOUT1 = 30A
Figure 7. Output Voltage Ripple at VIN = 12V,
VOUT2 = 1.5V, IOUT2 = 30A
VOUT1
20MHz BW
50mV/DIV
VOUT2
20MHz BW
50mV/DIV
0A TO 15A
LOAD STEP
0A TO 15A
LOAD STEP
100µs/DIV
DC2000A F08
Figure 8. Transient Performance at VIN = 12V,
VOUT1 = 1V, IOUT1 = 0A to 15A
DC2000A F07
100µs/DIV
DC2000A F09
Figure 9. Transient Performance at VIN = 12V,
VOUT2 = 1V, IOUT2 = 0A to 15A
dc2000af
5
DEMO MANUAL DC2000A
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
SANYO, 16SVPC270M
Required Circuit Components
1
1
CIN1
CAP., OS-CON, 270µF, 16V, 20%, E12
2
6
CIN2, CIN3, CIN4, CIN5, C27, C28
CAP., X5R, 10µF,16V, 10%, 1210
3
2
C10, C20
CAP., X5R, 10µF,16V, 10%, 0805
4
6
COUT1, COUT3, COUT7, COUT8, C29,
C33
CAP., X5R, 100µF, 6.3V, 20%,1210
5
7
COUT2, COUT4, COUT5, COUT6,
COUT9, COUT10, COUT11
CAP., OS-CON, 330µF, 16V, 20%, 7343
6
4
C2, C7, C18, C21
CAP., X5R, 0.1µF, 16V, 10%, 0603
7
4
C3, C4, C16, C19
CAP., X5R, 220nF, 25V, 10%, 0603
8
2
C8, C12
CAP., X5R, 1.5nF, 25V, 10%, 0603
SANYO, 2R5TPE330M9
9
1
C9
CAP., X5R, 220pF, 25V, 10%, 0603
10
1
C11
CAP., X5R, 150pF, 25V, 10%, 0603
11
2
C13, C22
CAP., X5R, 1µF, 16V, 10%, 0603
12
1
C14
CAP., X5R, 4.7µF, 16V, 10%, 0805
13
4
C31, C32, C35, C36
CAP., X5R, 0.22µF, 16V, 10%, 0805
14
2
D1, D2
DIODE, SCHOTTKY, SOD-323
CENTRAL CMDSH-3TR
15
1
L1
0.25µH
WÜRTH ELECT., 744301025
16
1
L2
0.33µH
WÜRTH ELECT., 744301033
17
2
Q1, Q3
OPTIMOS POWER-TRANSISTOR,
PG-TDSON-8 25V
INFINEON, BSC050NE2LS
18
2
Q2, Q4
OPTIMOS POWER-TRANSISTOR,
PG-TDSON-8 25V
INFINEON, BSC010NE2LSI
19
2
Q7, Q8
MOSFET SPEED SRS 30V 30A LFPAK
RENESAS RJK0305DPB
20
3
R1, R14, R25
RES., CHIP, 20k, 1%, 0603
21
4
R4, R17, R23, R26
RES., CHIP, 0Ω, 0603
22
1
R9
RES., CHIP, 3.01k, 1%, 0603
23
1
R10
RES., CHIP, 1k, 1%, 0603
24
1
R11
RES., CHIP, 3.57k, 1%, 0603
25
1
R12
RES., CHIP, 715Ω, 1%, 0603
26
1
R13
RES., CHIP, 13.3k, 1%, 0603
27
7
R19, R37, R40, R49, R52, R55, R57
RES., CHIP, 10k, 1%, 0603
28
1
R15
RES., CHIP, 10.7k, 1%, 0603
29
4
R16, R20, R24, R36
RES., CHIP, 10Ω, 1%, 0603
30
1
R18
RES., CHIP, 2.2Ω, 1%, 0603
31
1
R21
RES., CHIP, 30.1k, 1%, 0603
32
1
R50
RES., CHIP, 34.8k, 1%, 0603
33
2
R28, R32
RES., CHIP, 100k, 1%, 0603
34
1
R34
RES., CHIP, 4.64k, 1%, 0603
35
1
R35
RES., CHIP, 931Ω, 1%, 0603
36
1
R43
RES., CHIP, 4.99k, 1%, 0603
37
2
R56, R58
RES., CHIP, 0.005Ω, 1%, 2512
6
IRC., LRF2512-01-R005-F
dc2000af
DEMO MANUAL DC2000A
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
38
1
U1
IC, LTC3875EUJ, QFN 6mm × 6mm
LINEAR TECH., LTC3875EUJ#010J-1PBF
39
1
U2
IC, LT1761ES5-SD, TSOT-23
LINEAR TECH., LT1761ES5-SD
Additional Demo Board Circuit Components
1
0
C1, C5, CIN6, C6, CIN7, C30, C34, CIN8, CAP., OPTIONAL
CIN9, CIN10, CIN11, C15, C17, C23,
C24, C25, C26, COUT12
2
0
RN1-RN4, R2, R3, R5 , R6, R7, R8,
R22, R27, R29, R33, R30, R31, R38,
R39, R41, R42, R44, R45, R46, R47,
R48, R51, R53, R54
RES., OPTIONAL
3
0
Q5, Q6, Q11, Q12
DUAL N-CHANNEL MOSFET 25V
FAIRCHILD FDMS3620S
4
0
Q9, Q10
DUAL N-CHANNEL MOSFET 25V
FAIRCHILD FDPC8011S
dc2000af
7
A
B
C
GND
EXTVCC
TRK/SS2
R15
10.7K
1%
E5
RN1
OPT
5
R38
OPT
C26 OPT
R43 5k
R40 10k
C22
1uF
EXTVCC
R37 10k
TCOMP1
TAVG
TRSET2
VO2_SNS-
R29
OPT
R26 0
R41
OPT
C21
0.1uF
1%
R19 10K
C11 150pF
VO1_SNS-
C23
OPT
VOUT1
R25
20k
C17
OPT
C15
OPT
RN4
OPT
VFB2
ITH2
ITH1
R14
20k
R13
13.3k
TK/SS1
RUN1
R21
30.1k
R30
OPT
C12
1.5nF
C2
0.1uF
R3
OPT
VO1_SNS+
C1
OPT
R2
OPT
RN2
OPT
E3
R1
R39
OPT
R42
OPT
4
C24
OPT
TK/SS2
5
R31
OPT
OPT
220nF
C19
SGND/PGND
SNS2-
SNSA2+
TK/SS2
VOSNS2-
VOSNS2+
ITH2
ITH1
VOSNS1-
VOSNS1+
R8
OPT
C4
4
220nF
JP1
TK/SS1
R27
41
10
9
8
7
6
4
ITH2
3
2
1
220nF
C3
OPT
R5
1
MODE
PS BM CCM
3
4
2
ITH1
TK/SS1
20K
R22 C16
OPT 220nF
VFB1
TCOMP2
TK/SS2
C6
OPT
C5
OPT
PLLIN
INTVCC
R7
OPT
RUN1
TCOMP1
U1
LTC3875EUJ
5
OFF
ON
SW2
RUN2
R32
100K
1%
2
C25
OPT
4
D1
TG2
R44 OPT
3
3 ON
VIN
JP3 ENTMPB
1
OFF
2
INTVCC
BG2
SW2
0.1uF
0 C18
21
20
R23
22
23
24
BG2
SW2
TG2
BG1
SW1
TG1
CMDSH-3
D2
2.2
C13
1uF
CMDSH-3
0.1uF
25
0
C7
INTVCC
R18
EXTVCC
BG1
R17
TG1
SW1
CLKOUT
3.01K
R9
JP2
26
27
28
100K
PGOOD
R45
OPT
RUN2
30
29
R28
SW2
TG2
BOOST2
BG2
EXTVCC
INTVCC
VIN
BG1
BOOST1
TG1
SW1
ILIM
1
R10
1K
INTVCC
PHASMD
120 90
60
DEG DEG DEG
3
2
VIN
VO2_SNS+
0 R6
OPT
R4
2
C9
220pF
TRSET1
RN3
OPT
E13
E12
E10
C8 1.5nF
TRK/SS1
2
1
D
ON
5
OFF
4
1
6
3
SW1
RUN1
2
1
3
E1
2
1
TRSET1
RUN1
2
1
40
SNSA1+
39
SNS1-
11
SNSD2+
38
12
SNSD1+
37
TCOMP1
36
TAVG
13
TAVG
TCOMP2
TCOMP2
34
ILIM
35
TRSET1
15
FREQ
16
TRSET2
14
TRSET2
4
1
6
3
32
RUN1
RUN2
33
MODE/PLLIN
17
IFAST
IFAST
31
PHASMD
10V
BG2
SW2
TG2
BG1
SW1
TG1
OPT
R33
Q1
BSC050NE2LS
4
4
CIN3
10uF
1210
4
R11
3.57k
1%
CIN4
10uF
1210
Q3
BSC050NE2LS
VIN
R34
4.64k
1%
Q4
BSC010NE2LSI
CIN5
10uF
1210
Q2
BSC010NE2LSI
CIN2
10uF
1210
CUSTOMER NOTICE
4
VIN
2
L1
2
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
2
REV
SCALE = NONE
JIAN L.
HZ
APPROVALS
CIN12
270uF
16V
VOUT2
R24 10
R36 10
2.5V
7343
2.5V
7343
TECHNOLOGY
VOUT1
E14
E15
DATE:
N/A
SIZE
1
DEMO CIRCUIT 2000A
LTC3875EUJ
Thursday, October 03, 2013
IC NO.
C
VO2_SNS+
VO1_SNS-
GND
1.0V / 30A
E11
J6
D
VO1_SNS+
VIN-
GND
PGOOD
RUN2
SHEET 1
2
REV.
OF 2
A
B
VO2_SNS-
GND
VOUT2
1.5V / 30A
J5
E9
E8
J4
J3
E7
E6
J2
4.5V - 14V
VIN
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
VO2_SNS-
C20
10uF
10V
VOUT2
VO2_SNS+
COUT6
+ 330uF
C10
10uF
10V
VOUT1
VO1_SNS-
COUT5
+ 330uF
330uF
2.5V
7343
+
J1
E4
VIN+
JIAN L.
VIN
DATE
9-30-13
APPROVED
VO1_SNS+
CIN1
270uF
16V
+ COUT4
R20 10
330uF
2.5V
7343
R16 10
+
PRODUCTION
HIGH EFFICIENCY, DUAL-OUTPUT SYNCHRONOUS BUCK
CONVERTER WITH VERY LOW DCR INDUCTOR
TITLE: SCHEMATIC
1
DESCRIPTION
REVISION HISTORY
+ COUT2
VIN
COUT8
100uF
6.3V
1210
COUT1
100uF
6.3V
1210
COUT7
100uF
6.3V
1210
COUT3
100uF
6.3V
1210
__
ECO
SET R33=60K ohm FOR FAST TRANSIST RESPONSE @ VOUT2
R35
931
1%
0.33uH
744301033
DCR = 0.32m OHM
L2
0.25uH
744301025
DCR = 0.32m OHM
R12
715
1%
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.
INTVCC
C14
4.7uF
INTVCC
VIN
INTVCC
E2
CLKOUT
5
6
7
8
1
2
3
5
6
7
8
1
2
3
CLKOUT
PGOOD
19
ENTMPB
18
ENTMPB
5
6
7
8
1
2
3
5
6
7
8
1
2
1
2
8
1
2
3
5
DEMO MANUAL DC2000A
Schematic Diagram
dc2000af
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.
A
B
ITH2
VO2_SNS-
VFB2
RUN1
TK/SS1
R53
OPT
R54
OPT
SW1
3
6
4
7
SW1
BG1
TG1
5
7
1
Q9
FDPC8011S, OPT
9
Q11
FDMS3620S
OPT
2
5
8
1
BG1
TG1
9
SW2
Q12
FDMS3620S
OPT
4
3
2
CIN8
OPT
VIN
SW2
BG2
TG2
7
1
Q10
FDPC8011S, OPT
4
OPTIONAL 3mm x 3mm Dual-MOSFETs
8
1
Q5
FDMS3620S
OPT
CIN6
OPT
2
5
CIN10
OPT
3
6
VIN
4
7
OPTIONAL 5mm x 6mm Dual-MOSFETs
8
5
C
OPT
R51
OPT
R48
8
5
RUN2
TK/SS2
4
3
2
VIN
3
6
CIN9
OPT
8
1
FOR DUAL PHASE OPERATION, REMOVE R24, R36, R21, R25, AND SHORT VOUT1 AND VOUT2.
ITH1
R46
OPT
9
6
2
5
D
VO1_SNS-
VFB1
9
9
6
BG2
TG2
CIN11
OPT
8
1
CIN7
OPT
VIN
3
Q6
FDMS3620S
OPT
3
OFF
JP5
BIAS
ON
C27
10uF
16V
+
CUSTOMER NOTICE
3
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
VIN
J8
COUT10
330uF
7343
2
R49
10K
IOUT1
+
1
IOUT2
J10
2
SCALE = NONE
JIAN L.
HZ
APPROVALS
C36
0.22uF
TECHNOLOGY
R58
0.005
2512
4
R57
10K
R55
10K
1
1
C28
10uF
16V
J7
OPT
R47
J9
E19
E18
IO1STEP CLK
GND
IO2STEP CLK
VOUT2
GND
E17
E16
VOUT1
EXTVCC
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
C35
0.22uF
R56
0.005
2512
4
C31
0.22uF
R52
10K
R50
34.8K
1%
+5.5V
1
DATE:
N/A
SIZE
1
DEMO CIRCUIT 2000A
LTC3875EUJ
Thursday, October 03, 2013
IC NO.
SHEET 2
OF 2
2
REV.
HIGH EFFICIENCY, DUAL-OUTPUT SYNCHRONOUS BUCK
TITLE: SCHEMATIC
1
RJK0305DPB
Q8
C34
OPT
6.3V
1210
C32
0.22uF
RJK0305DPB
Q7
C30
OPT
6.3V
1210
4
LT1761ES5-SD
5
OUT
SHDN ADJ
GND
IN
U2
C29
100uF
6.3V
1210
3
2
1
COUT11 COUT12 C33
+
100uF
330uF
OPT
6.3V
7343
7343
1210
LOAD STEP CIRCUIT 2
VOUT2
+
COUT9
330uF
7343
LOAD STEP CIRCUIT 1
VOUT1
2
OPTIONAL 5.5V BIAS
VIN
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.
6
4
7
10
2
5
4
7
4
9
3
1
5
10
5
4
3
2
5
4
3
2
5
3
2
1
5
3
2
1
2
3
4
5
2
3
4
5
OPTIONAL JUMPERS FOR SINGLE OUTPUT/DUAL PHASE OPERATION
A
B
C
D
DEMO MANUAL DC2000A
Schematic Diagram
dc2000af
9
DEMO MANUAL DC2000A
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
10 Linear Technology Corporation
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1630 McCarthy Blvd., Milpitas, CA 95035-7417
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 LINEAR TECHNOLOGY CORPORATION 2013
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