1
dc2044af
DEMO MANUAL DC2044A
Description
LTC4020EUHF
High Voltage Buck-Boost
Multi-Chemistry Battery Charger
Demonstration circuit 2044A is a 55V buck-boost multi-
chemistry battery charger featuring the LTC4020. The board
will accept an input voltage between 15V and 55V. The
float voltage of the battery output (BAT) is 25.2V, with 3.3A
maximum charge current. The converter output (VOUT)
has a voltage range of 21V to 28V, with 3A maximum load
current. The LTC4020 contains a high efficiency synchro-
nous buck-boost DC/DC controller and uses a proprietary
average current mode architecture.
The LTC4020 battery charger can provide a constant-
current/constant-voltage charge algorithm (CC/CV, with
MODE pin grounded), constant-current charging (CC, with
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.
performance summary
MODE pin floated), or charging with an optimized 4-step,
3-stage lead-acid battery charge profile (connect MODE pin
to INTVCC, with a 0Ω jumper at the optional R29 position).
The LTC4020 data sheet gives a complete description of the
IC operation and application information. The data sheet
must be read in conjunction with this quick start guide.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2044A
Specifications are at TA = 25°C
SYMBOL CONDITIONS VALUE
Input Voltage Range 15V to 55V
Battery Float Voltage (BAT) (Nominal) IBAT = 0A to 3.3A 25.2V
Converter Output Voltage (VOUT) IOUT = 0A to 3A 21V to 28V
Maximum Battery Charge Current, IBAT IOUT = 0A 3.3A
Maximum Converter Output Current, IOUT IBAT = 0A 3A
Typical Efficiency VIN = 24V, VOUT = 25.2V, IOUT = 3A 97%
Typical Converter Output Ripple VIN = 55V, VOUT = 25.2V, IOUT = 3A (20MHz BW) 56mVP-P
2
dc2044af
DEMO MANUAL DC2044A
Quick start proceDure
Demonstration circuit 2044A is easy to set up to evaluate
the performance of the LTC4020. Refer to Figure 1 for
the proper measurement equipment setup and follow the
procedure below:
1. With power off, connect the input power supply (set
for 0V) to VIN and GND (input return).
2. Connect the converter output load between VOUT and
GND (Initial load: no load).
3. Connect the DVMs to the input and outputs.
4. Turn on the input power supply and slowly increase
to 24V. Check for the proper output voltages, VOUT of
25.2V and BAT of 25.2V.
5. Once the proper output voltages are established, adjust
the converter output load within the operating range (3A
maximum) and/or adjust input voltage (15V to 55V) and
observe the output voltage regulation, ripple voltage,
efficiency 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.
Additional Notes:
1. CAUTION: Be careful when testing with high voltage.
High voltage can result in an electric shock if care
is not taken.
2. CAUTION: Batteries are potentially dangerous high
energy sources. Improper connection, overcharge, or
rapid discharge could result in explosion and/or file.
Please read the specification/manual of the battery
before test.
3. The combined converter output load current and bat-
tery charging current should not exceed 3.3A.
4. Without a proper battery, BAT output can be open or
connected with other suitable loads for test purposes.
It may be a good practice to add low ESR electrolytic
capacitors to the BAT output (≥1000µF at ≥35V, for
25.2V float voltage).
Note: These capacitors help simulate the low impedance
of a battery and maintain stability of the charge current
loop. It’s only needed for test purposes with electronic
or resistive loads, and not needed in the actual battery
application/test (where the BAT load is a battery).
5. BAT float voltage can be easily adjusted with the resis-
tor divider R8/R10. Converter output voltage VOUT can
be adjusted with the resistor divider R9/R11. Adjust/
optimize the loop compensations if necessary.
3
dc2044af
DEMO MANUAL DC2044A
Quick start proceDure
Figure 1. Proper Measurement Equipment Setup
Figure 2. Measuring Output Voltage Ripple
dc2044a F01
+ –
VOUT GND
COUT
dc2044a F02
4
dc2044af
DEMO MANUAL DC2044A
Figure 3. Efficiency vs Load Current (VOUT = 25.2V)
Figure 4. Efficiency vs Input Voltage (VOUT = 25.2V, IOUT = 3A)
Quick start proceDure
LOAD CURRENT (A)
EFFICIENCY (%)
dc2044a F03
100
70
90
80
40
30
20
10
0
60
50
0.01 1 100.1
16VIN
55VIN
24VIN
VIN (V)
EFFICIENCY (%)
dc2044a F04
96
98
97
93
92
91
90
95
94
14 34 38 42 46 50 5622 26 3018
5
dc2044af
DEMO MANUAL DC2044A
parts List
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 1 C1 CAP, CHIP, X7S, 0.1µF, 10%, 100V, 0603 TDK, C1608X7S2A104K
2 4 C2, C3, C15, C17 CAP, ELEC, 56µF, 20%, 63V, 10.3mm × 10.3mm SUNCON, 63HVH56M
3 1 C4 CAP, CHIP, C0G, 100pF, 10%, 16V, 0402 AVX, 0402YA101KAT9A
4 1 C5 CAP, CHIP, C0G, 0.1µF, 10%, 16V, 1206 KEMET, C1206H104J3GACTU
5 1 C6 CAP, CHIP, X7R 10nF, 10%, 50V, 0603 AVX, 06035C103KAT
6 1 C8 CAP, CHIP, C0G, 680pF, 10%, 50V, 0603 AVX, 06035A681KAT2A
7 1 C9 CAP, CHIP, C0G, 68pF, 5%, 16V, 0402 AVX, 0402YA680JAT4A
8 2 C19, C20 CAP, CHIP, X5R, 0.22µF, 10%, 25V, 0603 AVX, 06033D224KAT2A
9 1 C10 CAP, CHIP, X7R, 0.001µF, 10%, 25V, 0603 AVZ, 06033C102KAT2A
10 1 C11 CAP, CHIP, X5R, 2.2µF, 10%, 16V, 0603 TDK, C1608X5R1C225K
11 1 C12 CAP, CHIP, X7R, 0.033µF, 10%, 25V, 0402 TDK, C1005X7R1E333K
12 6 C14, C16, C18, C23, C27, C28 CAP, CHIP, X7S, 4.7µF,20%, 100V, 1210 TDK, C3225X7S2A475M
13 1 C21 CAP, CHIP, X5R, 10µF, 20%, 6.3V, 0805 AVX, 08056D106KAT2A
14 2 D1, D2 DIODE, SMT, SUPERBARRIER, 60V, 0.5A,
SOD123
DIODES INC, SBR0560S1
15 1 D3 DIODE, LED, RED, SMT, 0603 PANASONIC, LNJ208R8ARA
16 1 D4 DIODE, LED, GREEN, 0603 LITE-ON, LTST-C190KGKT
17 1 D6 DIODE, SMT SCHOTTKY BARRIER RECTIFIER,
SMA
VISHAY, B360A-E3
18 1 L1 IND, SMT, 15µH, 10A, 20%, 10mm × 11.3mm COILCRAFT, XAL1010-153MEB
19 1 M1 P-CHANNEL MOSFET, –60V, –14.4A,
PowerPAKSO8
VISHAY, Si7461DP-T1-E3
20 2 M2, M3 DUAL N-CHANNEL MOSFET, 60V, 9.7A,
PowerPAKSO8
VISHAY, Si7960DP-T1-E3
21 1 R2 RES, CHIP, 510kΩ, 5%, 0402 VISHAY, CRCW0402510KFKED
22 5 R1, R4, R5, R12, R13 RES, CHIP, 100kΩ, 5%, 0402 VISHAY, CRCW0402100KJNED
23 2 R6, R7 RES, CHIP, 20Ω, 5%, 0402 VISHAY, CRCW040220R0JNED
24 1 R8 RES, CHIP, 226kΩ, 0.1%, 0603 VISHAY, TNPW06030F226BEEA
25 1 R9 RES, CHIP, 226kΩ, 1%, 0402 VISHAY, CRCW0402226KFKED
26 1 R10 RES, CHIP, 24.9kΩ, 0.1%, 0402 VISHAY, TNPW04020F24K9BEED
27 1 R11 RES, CHIP, 24.9kΩ, 1%, 0402 VISHAY, CRCW040224K9FKED
28 1 R14 RES, CHIP, 10kΩ, 1%, 0402 VISHAY, CRCW040210K0FKED
29 1 R15 RES, CHIP, 56kΩ, 1%, 0402 VISHAY, CRCW040256K0FKED
30 1 R16 RES, CHIP, 47kΩ, 1%, 0402 VISHAY, CRCW040247K0FKED
31 8 R21 TO 25, R34, R35, R37 RES, CHIP, 0Ω JUMPER, 0402 VISHAY, CRCW04020000Z0ED
32 1 R36 RES, CHIP, 0Ω JUMPER, 0603 VISHAY, CRCW06030000Z0EA
33 2 R18, R20 RES, CHIP, 100Ω, 5%, 0402 VISHAY, CRCW0402100RJNED
34 1 R19 RES, CHIP, 4.7Ω, 5%, 0402 VISHAY, CRCW04024R70JNED
35 2 R26, R27 RES, CHIP, 3kΩ, 5%, 0402 VISHAY, CRCW04023K00JNED
6
dc2044af
DEMO MANUAL DC2044A
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
36 1 R28 RES, CHIP, 51kΩ, 5%, 0402 VISHAY, CRCW040251K00JNED
37 1 R38 RES, CHIP, 5.1, 5%, 0805 VISHAY, CRCW08055R10JNEA
38 2 RCBRB1, RCBRT1 RES, CHIP, 0.008Ω, 1%, 0.5W, 1206 VISHAY, WSL12068L000FEA18
39 1 RCBAT1 RES, CHIP, 0.015Ω, 1%, 0.5W, 1206 TT ELEC LRC-LRF1206F-01-F
40 1 U1 IC, LTC4020EUHF, 5mm × 7mm QFN38 LINEAR TECHNOLOGY, LTC4020EUHF
Additional Demo Board Circuit Components
1 0 C7, C13, C22, C24 ,C25 , C26, C30,
C31 (OPT)
CAP, CHIP, OPTIONAL
2 0 D7 (OPT) DIODE, SMT SOD123
3 0 D5(OPT) DIODE, SMT SCHOTTKY BARRIER RECTIFIER,
SMA
4 0 R3, R17, R29, R31, R32 OPT RES, OPTIONAL
Hardware: For Demo Board Only
1 11 E1, E2, E5 TO E10, E13, E14, E17 TURRET, 0.09" DIA MILL-MAX, 2501-2-00-80-00-00-07-0
2 6 E3, E4, E11, E12, E15, E16 VERTICAL BANANA JACK, 575-4 KEYSTONE, 575-4
3 4 STAND-OFF, NYLON (SNAP ON), 0.375" TALL KEYSTONE, 8832 (SNAP ON)
4 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 2044A
parts List
7
dc2044af
DEMO MANUAL DC2044A
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.
schematic Diagram
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
15V - 55V
VIN
63V
63HVH56M
63V
63HVH56M
21V - 28V
VOUT
GND
GND
BAT
3.3A MAX
25.2V VFLOAT
25V 25V
16V
0.5W
OPT
6.3V
63HVH56M
63V
63HVH56M
63V
MODE
0.5W
0.5W
RNG / SS
100V 100V
NTC
SHDN
GND
ILIMIT
1st PROTOTYPE1GB 8-13-12
100V
100V 100V 100V 100V
SGND
3A MAX
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0402.
ALL CAPACITORS ARE IN MICROFARADS, 0402.
RED GREEN
25V
XAL1010-153ME
0.1%
0.1%
INT_VCC
INT_VCC
VBAT VOUT
VOUT
VBAT
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
Charlie Z.
PRODUCTION2 5-29-13
__
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
Charlie Z.
PRODUCTION2 5-29-13
__
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
Charlie Z.
PRODUCTION2 5-29-13
__
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
2
Thursday, September 19, 2013
1
HIGH VOLTAGE BUCK / BOOST
HZ
Charlie Z.
N/A
MULTI-CHEMISTRY BATTERY CHARGER
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
2
Thursday, September 19, 2013
1
HIGH VOLTAGE BUCK / BOOST
HZ
Charlie Z.
N/A
MULTI-CHEMISTRY BATTERY CHARGER
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
2
Thursday, September 19, 2013
1
HIGH VOLTAGE BUCK / BOOST
HZ
Charlie Z.
N/A
MULTI-CHEMISTRY BATTERY CHARGER
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
Thursday, September 19, 2013
11
HZ
N/A
LTC4020EUHF
DEMO CIRCUIT 2044A
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
Thursday, September 19, 2013
11
HZ
N/A
LTC4020EUHF
DEMO CIRCUIT 2044A
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
Thursday, September 19, 2013
11
HZ
N/A
LTC4020EUHF
DEMO CIRCUIT 2044A
RCBRT1
0.008
1206
RCBRT1
0.008
1206
E13E13
RCBAT1
0.015
1206
RCBAT1
0.015
1206
C22
0.033uF
C22
0.033uF
C25
OPT
C25
OPT
D5
B360A
OPT
D5
B360A
OPT
RCBRB1
0.008
1206
RCBRB1
0.008
1206
R22 0R22 0
C4
100pF
C4
100pF
R10
24.9k
R10
24.9k
R26 3KR26 3K
E9E9
R13
100k
R13
100k
R16
47k
R16
47k
E1E1
C16
4.7uF
1210
C16
4.7uF
1210
M1
Si7461DP
M1
Si7461DP
4
1
5 6 7 8
2 3
R14
10k
R14
10k
D1
SBR0560S1
D1
SBR0560S1
E16E16
R9
226k
R9
226k
E7E7
R29
OPT
R29
OPT
E4E4
D3D3
R20 100R20 100
R35 0R35 0
C21
10uF
0805
C21
10uF
0805
C10
1nF
0603
C10
1nF
0603
C11
2.2uF
0603
C11
2.2uF
0603
R6
20
R6
20
C5
0.1uF
1206
C5
0.1uF
1206
U1
LTC4020EUHF
U1
LTC4020EUHF
ILIMIT
25
VFBMAX
26
BAT 20
STAT1 12
STAT2 13
RNG/SS
15
BG1 37
SGND
29
PGND
35
SGND
39
BG2 33
TG2 31
BST2 30
SW1 38
TG1 1
BST1 2
INT_Vcc 34
FBG
18
SENSGND 4
VFBMIN
19
CSOUT
24
ITH 27
TIMER
14
RT
8
CSN 22
SGND
3
SHDN
9
VIN_REG
10
SENSVIN 7
SENSTOP 6
CSP 23
BGATE 21
PVIN
36
SENSBOT 5
NTC
16
MODE
11
Vc 28
SW2 32
VFB
17
M2B
Si7960DP
M2B
Si7960DP
4
3 5
6
C14
4.7uF
1210
C14
4.7uF
1210
C9
68pF
C9
68pF
E3E3
R37 0R37 0
R25
0
R25
0
E2E2
C7
OPT
C7
OPT
E12E12
R19
4.7
R19
4.7
R2
510k
R2
510k
R18 100R18 100
+
C2
56uF
+
C2
56uF
E14E14
R27 3KR27 3K
D2
SBR0560S1
D2
SBR0560S1
R34 0R34 0
C27
4.7uF
1210
C27
4.7uF
1210
M3A
Si7960DP
M3A
Si7960DP
2
1 7
8
R3
OPT
R3
OPT
R32
OPT
0603
R32
OPT
0603
R28
51k
R28
51k
C30
OPT
0603
C30
OPT
0603
C23
4.7uF
1210
C23
4.7uF
1210
R38 5.1
0805
R38 5.1
0805
R24 0R24 0
C24
OPT
C24
OPT
R11
24.9k
R11
24.9k
R15
56k
R15
56k
C28
4.7uF
1210
C28
4.7uF
1210
M3B
Si7960DP
M3B
Si7960DP
4
3 5
6
E6E6
+
C3
56uF
+
C3
56uF
R21 0R21 0
E8E8
+
C15
56uF
+
C15
56uF
+
C17
56uF
+
C17
56uF
R4
100k
R4
100k
C1 0.1uF
0603
C1 0.1uF
0603
D4D4
C31
OPT
0603
C31
OPT
0603
R5
100k
R5
100k
C8
680pF
0603
C8
680pF
0603
R8
226k
0603
R8
226k
0603
E10E10
R7
20
R7
20
R36
0
0603R36
0
0603
E11E11
M2A
Si7960DP
M2A
Si7960DP
2
1 7
8
E15E15
R23
0
R23
0
E5E5
C18
4.7uF
1210
C18
4.7uF
1210
D6
B360A
D6
B360A
L1 15uHL1 15uH
C13 OPT
0603
C13 OPT
0603
C19
0.22uF
0603
C19
0.22uF
0603
R1
100k
R1
100k
R17 OPT
0603
R17 OPT
0603
C20
0.22uF
0603
C20
0.22uF
0603
C6
10nF
0603
C6
10nF
0603
C12
0.033uF
C12
0.033uF
D7
OPT
D7
OPT
C26
OPT
1210
C26
OPT
1210
R31 OPT
0603
R31 OPT
0603
E17E17
R12
100k
R12
100k
8
dc2044af
DEMO MANUAL DC2044A
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LINEAR TECHNOLOGY CORPORATION 2013
LT 1113 • PRINTED IN USA
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LT C ) 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 LT C 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 LT C 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. LT C assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LT C 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 LT C applica-
tion engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
