1
Rev. A
DEMO MANUAL
DC1830B-A/DC1830B-B
DESCRIPTION
LTC4000
Battery Charger Controller and
PowerPath Manager
Demonstration circuit 1830B is a battery charger control-
ler and PowerPath™ manager featuring the LT C
®
4000.
This board should be connected to a front end DC/DC
power supply for a complete charger solution.
The DC1830B is customizable to handle a wide variety of
applications with output voltages from 3V to 30V and out-
put currents up to 6.5A with the PFETs supplied, and up to
60V and/or 13A with higher voltage rating and/or added
PFETs. The reference design provided with DC1830A is
targeted at 4-cell LiFePO4 (14.6V/5A) applications.
The DC1830B loop compensation values were proven
with the LTC3845A buck-boost power converter shown
and are typical for other applications. The output of
this demo board was specifically tailored for a Tenergy
10A-hour battery, P/N 30207. Other voltages can be set
by changing ROFB2 and RBFB2. The desired nominal volt-
age can be accurately trimmed by using trim resistors
ROFBX and RBFBX. For example, for 14.4V battery float
voltage, change ROFB2 and RBFB2 to 86.6k, and add 7.5M
at ROFBX and RBFBX for greater set point accuracy. Other
parameters can be adjusted to suit specific applications
with guidance provided in the LTC4000 data sheet. Table 2
provides a summary of parameter adjustments.
This circuit was designed to demonstrate the high levels
of performance and small solution size attainable using
All registered trademarks and trademarks are the property of their respective owners.
PERFORMANCE SUMMARY
this part to control a switch mode power converter to form
a battery charger, intelligent PowerPath manager, and
power supply system. It produces a regulated 5A/14.6V
battery charger output as well as a system output of up to
5.5A: suitable for a wide variety of portable applications
including instruments, industrial equipment, power tools,
and computers.
The DC1830B-A provides a solution complete with both
battery charger control and PowerPath management. It
includes a second PFET (Q2) between VOUT-SYS and BAT
to provide instant-on functionality which keeps VOUT-SYS
within a narrow range regardless of battery voltage, and
disconnects the battery when it is fully charged and
power is available from the front end DC/DC converter.
Thermal regulation circuitry is also provided to limit the
temperature of both PFETs. The DC1830B-B provides a
simple battery-charger-controller only solution without
the PowerPath manager. It deletes the second PFET and
thermal regulation circuitry. In this case, the battery is
always online and VOUT-SYS tracks BAT voltage.
Design files for this circuit board are available at
http://www.analog.com/DC1830B-A
Specifications are at TA = 25°C
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Supply Range This is the Input Voltage of the Front End DC/DC Supply 20 60 V
IIN Input Current Limit This is the Input Current Limit Set by the LTC4000 3 A
VFLOAT Battery Float Voltage 14.4 14.6 14.8 V
Output Regulation Line and Load (20V to 60V, 0A to 4.5A) ±0.005 %
IBAT Battery Charge Current 5 A
Battery Charge Current – Trickle 0.6 A
tTCharge Termination Time VBAT = VFLOAT 2.9 hours
VOUT-SYS System Output Voltage 12.3 14.6 15.5 V
IOUT-SYS System Output Current Range *Input Current Limited Below 35VIN 0 5.5* A
2
Rev. A
DEMO MANUAL
DC1830B-A/DC1830B-B
QUICK START PROCEDURE
Demonstration circuit 1830 is offered for use in combina
-
tion with a front end DC/DC converter, and will need to be
customized to suit the intended application. It has been
supplied with components for a design as outlined in the
performance summary, and tested in conjunction with the
LTC3845A buck converter that it was tailored to. A sepa-
rate demonstration board is available for the LTC4000/
LTC3789 buck-boost combination, the DC1721A. The
LTC4000 data sheet should be used for guidance in deter-
mining circuit values for the application at hand. You may
follow the design example on page 26 of the data sheet.
Table 1 provides a summary of parameter adjustments.
NOTE: The PFETs supplied on this board are rated at 30V.
Once the circuit has been customized to suit the appli-
cation at hand, it is easy to set up to evaluate the per-
formance of the LTC4000 when combined with a suit-
able switching power converter, such as the LTC3845A.
voltages and currents cited in this procedure are for the
design as delivered; if the design has been customized,
substitute the appropriate values. Refer to Figure 1 for
proper measurement equipment setup and follow the
procedure below:
WARNING: BATTERIES ARE POTENTIALLY DANGEROUS
HIGH ENERGY SOURCES. IMPROPER CONNECTION,
OVERCHARGE, OR RAPID DISCHARGE COULD RESULT
IN EXPLOSION AND/OR FIRE.
1. Set an input power supply that is capable of 60V and
3A, to 24V. Then turn off the supply.
2. With power off, connect the supply to the input ter-
minals VIN and GND.
NOTE:
a. Input voltages lower than 20V can keep the con-
verter from turning on due to the undervoltage
lockout feature of the LTC4000.
b. If efficiency measurements are desired, refer to
Figure 1 for the test setup.
3. Set CHARGE jumper to ENABLE.
4. Turn on the power at the input.
NOTE: Make sure that the input voltage never
exceeds 60V.
5. Check for the proper BAT output voltage of 14.6V.
Turn off the power at the input.
6. Now that the proper output voltage is established,
connect a variable load capable of sinking 6A at 16V
to the output terminals BAT and GND. Set the current
for 0A.
7. Turn on the power at the input.
NOTE: If there is no output, temporarily disconnect
the load to make sure that the load is not set too high.
8. Once the proper BAT output voltage is again estab-
lished, adjust the load and/or source within the oper-
ating range and observe the battery float voltage regu-
lation, charge current, and other desired parameters.
9. Set the load to constant voltage mode to more easily
observe charge current and trickle charge current.
NOTE: The following applies to the DC1830B-A.
NOTE: Operation in the instant-on region (VOUT <
12.5V) may engage thermal limit circuit to protect
Q2 in the linear region.
NOTE: The optional thermal limit circuit for Q1 (Q5,
RNTC3, R8 to 12, and U2) is included to protect Q1 in
case of an extended short-circuit on VOUT-SYS under
adverse thermal conditions (TA > 40°C). It may not be
needed in applications with less severe thermal condi-
tions, lower current available to VOUT-SYS, or where
continuous short-circuit protection on VOUT-SYS is
not required.
3
Rev. A
DEMO MANUAL
DC1830B-A/DC1830B-B
QUICK START PROCEDURE
Table 1. LTC4000 Charger Setup Parameters and Reference Values
REFERENCE DESCRIPTION NOMINAL VALUE (V)* MIN/MAX CONDITIONS
IIL Input Current Regulation/Limit (50µA • RIL)/20 45/55 50mV max
ICL Charge Current Regulation/Limit (50µA • RCL)/20 45/55 50mV max
ICL Trickle Charge Current Regulation/Limit (5µA • RCL)/20 4.5/5.5
VBAT-FLOAT Battery Float Voltage 1.136V 1.125/1.147
VOUT System Voltage 1.193V 1.181/1.204 Charger Off
(Follows VBAT) Charger Float
(Follows VBAT) Charging at ICL, 0.86VBAT-FLOAT < VBAT < VBAT-FLOAT
0.86 • 1.136V 0.82/0.90 Instant-On, 0.68VBAT-FLOAT < VBAT < 0.86VBAT-FLOAT
0.86 • 1.136V 0.82/0.90 Instant-On, Trickle, VBAT < 0.68VBAT-FLOAT
VM Input Voltage Monitor/UVLO 1.193V 1.181/1.204 Falling, (40mV Hysteresis)
CX C/X Monitor/Charge Termination (5µA • RCX – 10mV)/20 4.5/5.5 Short TMR to BIAS for C/X Termination
TMR Charge Termination Timer 104S/nF 83/126
*Normalized to sense point
10. Turn off the power at the input.
11. Connect the output load and meters to the VOUT-SYS
output.
12. Set CHARGE jumper to DISABLE.
13. Turn on the power at the input.
14. Once the proper VOUT-SYS is again established,
adjust the load and/or source within the operating
range and observe the output voltage regulation, rip-
ple voltage, efficiency, input and output current limit,
and other desired parameters.
5
Rev. A
DEMO MANUAL
DC1830B-A/DC1830B-B
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
10-36 VIN, STEP-UP/DOWN DC/DC CONVERTER
Rsense-input
LTC4000 SYSTEM CONTROL LOOPS
A5
A7
A6
A4
Rsense-charge
DC - DC CONVERTER
VC / ITH
LTC4000 Gm
Gm
Gm
Gm
Battery
Load
RST
SHDN
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
A3
Friday, June 29, 2012
12
16.8V, 5A BATTERY CHARGER WITH HIGH EFFICIENCY,
AK
DAVID B.
N/A
LTC4000EGN, LTC3789EGN
DEMO CIRCUIT 1721A
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
A3
Friday, June 29, 2012
12
16.8V, 5A BATTERY CHARGER WITH HIGH EFFICIENCY,
AK
DAVID B.
N/A
LTC4000EGN, LTC3789EGN
DEMO CIRCUIT 1721A
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
A3
Friday, June 29, 2012
12
16.8V, 5A BATTERY CHARGER WITH HIGH EFFICIENCY,
AK
DAVID B.
N/A
LTC4000EGN, LTC3789EGN
DEMO CIRCUIT 1721A
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
DAVID B.
1ST PROTOTYPE
1 08-20-10
__
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
DAVID B.
1ST PROTOTYPE
1 08-20-10
__
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
DAVID B.
1ST PROTOTYPE
1 08-20-10
__
GNDGND
GNDGND
BATBAT
VINVIN VOUT-SYSVOUT-SYS
Figure 2. Block Diagram with Typical DC/DC Converter
QUICK START PROCEDURE
6
Rev. A
DEMO MANUAL
DC1830B-A/DC1830B-B
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
DC1830B-A Required Circuit Components
1 1 C1 CAP., X5R, 4.7µF, 10V, 20% 0603 AVX, 0603ZD475MAT2A
2 1 CBAT CAP., SMT ALUMINUM, 150µF, 35V SUNCON, 35HVP150M
3 1 CBIAS CAP., X7R, 1µF, 16V, 10% 0603 AVX, 0603YC105KAT2A
4 1 CBGATE CAP., X7R, 10nF, 50V, 5% 0603 MURATA, GRM188R71H103JA01D
5 2 CC2, CTMR CAP., X7R, 0.1µF, 50V, 10% 0603 AVX, 06035C104KAT2A
6 2 CIIMON, CIBMON CAP., C0G, 1000pF, 25V, 5% 0603 AVX, 06033A102JAT2A
7 1 CIN CAP., X7R, 1µF, 50V, 10% 1210 AVX, 12105C105KAT2A
8 2 COUT, CL CAP., X7R, 2.2µF, 50V, 10% 1206 MURATA, GRM31CR71H225KA88L
9 1 D1 DIODE ZENER 3.0V 200MW SOD-323 DIODE INC., BZT52C3V0S-7-F
10 1 D2 LED, GREEN, SMT, 0603 LITE-ON, LTST-C190KGKT
11 2 D3, D4 LED 660NM SUPER RED DIFF 0603 SMD LUMEX, SML-LX0603SRW-TR
12 1 F2 FUSE 12A 32V T-LAG 1206 SMD COOPER BUSSMAN, 3216TD12-R
13 2 Q1, Q2 MOSFET P-CHAN., 30V, POWERPAK-8 VISHAY, SI7135DP-T1-GE3
14 2 Q5, Q6 SMALL SIGNAL MOSFET ON SEMI., 2N7002LT1G
15 2 RBFB2, ROFB2 RES., CHIP., 84.5k, 0.1W, 1% 0603 VISHAY, CRCW060384K5FKEA
16 4 RBFB1, ROFB1, R12, R17 RES., CHIP., 1M, 0.1W, 1% 0603 VISHAY, CRCW06031M00FKEA
17 1 RC1 RES., CHIP 4.22k 1/10W 1% 0603 YAGEO, RT0603FRE074K22L
18 1 RCL RES., CHIP., 24.3k, 0.1W, 1% 0603 VISHAY, CRCW060324K3FKEA
19 1 RCS SENSOR RES., 0.01Ω 1W 2% 1508 SMD SUSUMU, RL3720WT-R010-G
20 3 RCX, R8, R13 RES., CHIP., 10k, 0.1W, 1% 0603 YAGEO, RC0603FR-0710KL
21 1 RIS1 SENSOR RES 0.015Ω 1W 2% 1508 SMD SUSUMU, RL3720WT-R015-G
22 1 RIL RES., CHIP., 18.2k, 0.1W, 1% 0603 VISHAY, CRCW060318K2FKEA
23 2 RNTC2, RNTC3, THERMISTOR NTC 10k 5% 0603 VISHAY, NTHS0603N02N1002J
24 1 RVM1 RES., CHIP 35.7k 1/10W 1% 0603 VISHAY, CRCW060335K7FKEA
25 1 RVM2 RES., CHIP 2.49k 1/10W 1% 0603 YAGEO, RC0603FR-072K49L
26 1 R5 RES., CHIP., 2.2k, 0.1W, 5% 0603 VISHAY, CRCW06032K2JKEA
27 3 R4, R7, R19 RES., CHIP., 100k, 0.1W, 5% 0603 VISHAY, CRCW0603100KJKEA
28 2 R6, R18 RES., CHIP., 4.7k, 0.1W, 5% 0603 VISHAY, CRCW06034K7JKEA
29 1 R9 RES., CHIP., 46.4k, 0.1W, 1% 0603 VISHAY, CRCW060346K4FKEA
30 2 R10, R15 RES., CHIP., 20k, 0.1W, 1% 0603 VISHAY, CRCW060320K0FKEA
31 2 R11, R16 RES., CHIP., 38.3k, 0.1W, 1% 0603 VISHAY, CRCW060338K3FKEA
32 1 R14 RES., CHIP., 78.7k, 0.1W, 1% 0603 VISHAY, CRCW060378K7FKEA
33 1 U1 I.C. LTC4000EUFD, 28PIN QFN ANALOG DEVICES, LTC4000EUFD#PBF
34 2 U2, U3 NANOPWR COMPARATOR, MSOP8 ANALOG DEVICES, LTC1540CMS8#PBF
7
Rev. A
DEMO MANUAL
DC1830B-A/DC1830B-B
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Additional Demo Board Circuit Components
1 0 CC1, CIGATE, CNTC, CCX, CCL, CIL, CVM CAP., 0603 OPT
2 0 CL1, CL2, CL3, CL4, CL5 CAP., 1206, 50V OPT
3 0 F1, F3 FUSE 12A 32V T-LAG 1206 SMD OPT
4 0 Q3, Q4 MOSFET P-CHAN., 30V, POWERPAK-8 OPT
5 0 R1, R2, R3, R20, R21, RIG, RBG, RIFB1, RBFBX,
RBFB3, ROFBX
RES., 0603 OPT
Hardware: For Demo Board Only
1 16 E1 - E6, E9 - E14, E18, E19, E20, E21 TESTPOINT, TURRET, 0.061" pbf MILL-MAX, 2308-2-00-80-00-00-07-0
2 5 E7, E8, E15, E16, E17 TESTPOINT, TURRET, 0.094" pbf MILL-MAX, 2501-2-00-80-00-00-07-0
3 4 JP1, JP2, JP3, JP4 HEADER, 3 PIN 0.079 SINGLE ROW SAMTEC, TMM-103-02-L-S
4 4 XJP1, XJP2, XJP3, XJP4 SHUNT, 0.079" CENTER SAMTEC, 2SN-BK-G
5 9 J1, J2, J3, J4, J5, J6, J7, J8, J9 CONNECTOR, BANANA JACK KEYSTONE, 575-4
6 4 MTG1, MTG2, MTG3, MTG4 STAND-OFF, NYLON (SNAP ON), 0.50" TALL KEYSTONE, 8833(SNAP ON)
8
Rev. A
DEMO MANUAL
DC1830B-A/DC1830B-B
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
DC1830B-B Required Circuit Components
1 1 C1 CAP., X5R, 4.7µF, 10V, 20% 0603 AVX, 0603ZD475MAT2A
2 1 CBAT CAP., SMT ALUMINUM, 150µF, 35V SUNCON, 35HVP150M
3 1 CBIAS CAP., X7R, 1µF, 16V, 10% 0603 AVX, 0603YC105KAT2A
4 2 CC2, CTMR CAP., X7R, 0.1µF, 50V, 10% 0603 AVX, 06035C104KAT2A
5 2 CIIMON, CIBMON CAP., C0G, 1000pF, 25V, 5% 0603 AVX, 06033A102JAT2A
6 1 COUT CAP., X7R, 2.2µF, 50V, 10% 1206 MURATA, GRM31CR71H225KA88L
7 1 CIN CAP., X7R, 1µF, 50V, 10% 1210 AVX, 12105C105KAT2A
8 1 D1 DIODE ZENER 3.0V 200MW SOD-323 DIODE INC., BZT52C3V0S-7-F
9 2 D2, D3 LED 660NM SUPER RED DIFF 0603 SMD LUMEX, SML-LX0603SRW-TR
10 1 D4 LED, GREEN, SMT, 0603 LITE-ON, LTST-C190KGKT
11 1 F2 FUSE 12A 32V T-LAG 1206 SMD COOPER BUSSMAN, 3216TD12-R
12 1 Q1 MOSFET P-CHAN., 30V, POWERPAK-8 VISHAY, SI7135DP-T1-GE3
13 2 RBFB1, ROFB1 RES., CHIP., 1M, 0.1W, 1% 0603 VISHAY, CRCW06031M00FKEA
14 1 RBFB2 RES., CHIP., 84.5k, 0.1W, 1% 0603 VISHAY, CRCW060384K5FKEA
15 1 RC1 RES., CHIP 4.22k 1/10W 1% 0603 YAGEO, RT0603FRE074K22L
16 1 RCL RES., CHIP., 24.3k, 0.1W, 1% 0603 VISHAY, CRCW060324K3FKEA
17 1 RCS SENSOR RES., 0.01Ω 1W 2% 1508 SMD SUSUMU, RL3720WT-R010-G
18 2 RCX, R21 RES., CHIP., 0.0Ω, 0.1W, 0603 VISHAY, CRCW06030000Z0EA
19 1 RIL RES., CHIP., 18.2k, 0.1W, 1% 0603 VISHAY, CRCW060318K2FKEA
20 1 RIS1 Sensor RES 0.015Ω 1W 2% 1508 SMD SUSUMU, RL3720WT-R015-G
21 1 RVM1 RES., CHIP 35.7k 1/10W 1% 0603 VISHAY, CRCW060335K7FKEA
22 1 RVM2 RES., CHIP 2.49k 1/10W 1% 0603 YAGEO, RC0603FR-072K49L
23 3 R4, R7, R19 RES., CHIP., 100k, 0.1W, 5% 0603 VISHAY, CRCW0603100KJKEA
24 1 R5 RES., CHIP., 2.2k, 0.1W, 5%, 0603 VISHAY, CRCW06032K2JKEA
25 2 R6, R18 RES., CHIP., 4.7k, 0.1W, 5% 0603 VISHAY, CRCW06034K7JKEA
26 1 R22 0Ω THICK FILM JUMPER CHIP, 2010 IRC., LRC-LRZ-2010LF-R000
27 1 U1 I.C. LTC4000EUFD, 28PIN QFN ANALOG DEVICES, LTC4000EUFD#PBF
PARTS LIST
9
Rev. A
DEMO MANUAL
DC1830B-A/DC1830B-B
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Additional Demo Board Circuit Components
1 0 CC1, CBGATE, CIGATE, CNTC, CCX, CCL, CIL, CVM CAP., 0603 OPT
2 0 CL, CL1, CL2, CL3, CL4, CL5 CAP., 1206, 50V OPT
3 0 F1, F3 FUSE 12A 32V T-LAG 1206 SMD OPT
4 0 RNTC2, RNTC3 THERMISTOR NTC 10k 5% 0603 OPT VISHAY, NTHS0603N02N1002J
5 0 R1, R2, R3, R20, RIG, RBG, RIFB1, RBFBX,
RBFB3, ROFBX, ROFB2
RES., 0603 OPT
6 0 R8, R13 RES., CHIP., 10k, 0.1W, 1% 0603 OPT YAGEO, RC0603FR-0710KL
7 0 R9 RES., CHIP., 46.4k, 0.1W, 1% 0603 OPT VISHAY, CRCW060346K4FKEA
8 0 R10, R15 RES., CHIP., 20k, 0.1W, 1% 0603 OPT VISHAY, CRCW060320K0FKEA
9 0 R11, R16 RES., CHIP., 38.3k, 0.1W, 1% 0603 OPT VISHAY, CRCW060338K3FKEA
10 0 R12, R17 RES., CHIP., 1M, 0.1W, 1% 0603 OPT VISHAY, CRCW06031M00FKEA
11 0 R14 RES., CHIP., 78.7k, 0.1W, 1% 0603 OPT VISHAY, CRCW060378K7FKEA
12 0 Q3, Q4 MOSFET P-CHAN., 30V, POWERPAK-8 OPT
13 0 Q5, Q6 SMALL SIGNAL MOSFET OPT ON SEMI., 2N7002LT1G
14 0 U2, U3 NANOPWR COMPARATOR, MSOP8 OPT ANALOG DEVICES, LTC1540CMS8#PBF
Hardware: For Demo Board Only
1 16 E1 - E6, E9 - E14, E18, E19, E20, E21 TESTPOINT, TURRET, 0.061" pbf MILL-MAX, 2308-2-00-80-00-00-07-0
2 5 E7, E8, E15, E16, E17 TESTPOINT, TURRET, 0.094" pbf MILL-MAX, 2501-2-00-80-00-00-07-0
3 4 JP1, JP2, JP3, JP4 HEADER, 3 PIN 0.079 SINGLE ROW SAMTEC, TMM-103-02-L-S
4 4 XJP1, XJP2, XJP3, XJP4 SHUNT, 0.079" CENTER SAMTEC, 2SN-BK-G
5 9 J1, J2, J3, J4, J5, J6, J7, J8, J9 CONNECTOR, BANANA JACK KEYSTONE, 575-4
6 4 MTG1, MTG2, MTG3, MTG4 STAND-OFF, NYLON (SNAP ON), 0.50" TALL KEYSTONE, 8833(SNAP ON)
10
Rev. A
DEMO MANUAL
DC1830B-A/DC1830B-B
Figure 3. Schematic, DC1830A
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
THERMAL REGULATION FOR Q2
DURING 'INSTANT-ON' OPERATION
OPTIONAL THERMAL PROTECTION FOR Q1
DURING VOUT-SYS SHORT CIRCUIT
GND
GND
GND
VOUT
VIN+
OPT OPT
GND
CL1 - CL5
1206 X
5
PLCS
3V - 60V
FROM DC / DC
**
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
*
NOT ON THE BOARD
OPT
NOT LOADED 0 OHM
REG CKT. FOR Q2
OPT
SI7135DP
*
ROFB2
10.0k
LOADED
OPT
2.2uF
0 OHM
ASSY CBGATE
LOADED 10nFOPT
CLQ2 / R22
NOT LOADED
R21
84.5k
RCXTP CKT. FOR Q1
-D
U1
LTC4000
LTC4000-1
LTC4000
LTC4000-1
-C
-A
-B
*
SOD323
LRC-LRZ-2010LF-R000
LOADED
NOT LOADED
LOADED
NOT LOADED
OPT
0 OHM
SI7135DP 84.5k
OPT
10.0k
0 OHM OPT
2.2uF
OPT
10nF
LRC-LRZ-2010LF-R000
/ R22
RILRIFB1
68.1k
68.1k
OPT
OPT 18.2k
18.2k
2k
2k
TO DC / DC
ENABLE
DISABLE
DISABLE
ENABLE ENABLE
DISABLE
3V - 30V
BIAS
NTC
BIAS
BIAS
BIAS
IL/IFB
IL/IFB
BIAS
BIAS
BIAS
BIAS
IL/IFB
NTC
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
1
DEMO CIRCUIT 1830B - A / B / C / D
11
BATTERY CHARGER CONTROL AND POWER MANAGEMENT
N/A
LTC4000EUFD / LTC4000EUFD - 1
NC
DAVE B.
07 - 03 - 12
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
1
DEMO CIRCUIT 1830B - A / B / C / D
11
BATTERY CHARGER CONTROL AND POWER MANAGEMENT
N/A
LTC4000EUFD / LTC4000EUFD - 1
NC
DAVE B.
07 - 03 - 12
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
1
DEMO CIRCUIT 1830B - A / B / C / D
11
BATTERY CHARGER CONTROL AND POWER MANAGEMENT
N/A
LTC4000EUFD / LTC4000EUFD - 1
NC
DAVE B.
07 - 03 - 12
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
DAVID B.PRODUCTION FAB
-1 07 - 03 - 12
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
DAVID B.PRODUCTION FAB
-1 07 - 03 - 12
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
DAVID B.PRODUCTION FAB
-1 07 - 03 - 12
RCX
*
R21
0
Q3
4
5 1
2
3
6
7
8
E16
IBMON
RBFB1
1M
E8
FLT
R11
38.3k
J9
GND
R3
OPT
Q2
*
4
51
2
3
6
7
8
J7 BAT
CVM
OPT
R5
2.2k
CIL
OPT
CBIAS
1uF
16V
COUT
2.2uF
1206
50V
R6
4.7k
E4
F2
FUSE
E22
GND
D3
RED
R9
46.4k
E5
CIBMON
1000pF
E6
CCL
OPT
J6
VOUT- SYS
C1
4.7uF
10V
E18
RST
RIG
OPT
OPT
R19
100k
R8
10k
JP4
CHRG_LED
RNTC3
10k
+
CBAT
150uF
35V
RBFB2
84.5k
E10
GND
E12
E19
ITH
RIL
*
F1
OPT
FUSE
R20
OPT
LTC4000EUFD / LTC4000EUFD - 1
U1
VM
1
RST
2
IIMON
3
IL / IFB
4
ENC
5
IBMON
6
CX 7
CL
8
TMR
9
GND
10
FLT
11
CHRG
12
BIAS 13
NTC 14
FBG 15
BFB 16
BAT 17
BGATE 18
CSN 19
CSP 20
OFB 21
IGATE 22
IID 23
ITH
24
CC 25
CLN
26
IN
27
GND
28
GND
29
J1
VOUT
R12
1Meg
J3
VIN
Q1
Si7135DP
4
5 1
2
3
6
7
8
RC1
4.22k
CIGATE
OPT
JP2
ENABLE
DISABLE
CHARGE
E17
IIMON
D1
BZT52C3V0S-7-F
1
2
D2
GREEN
CCX
OPT
Q6
2N7002L
1
32
+
-
U3
LTC1540CMS8
GND
1
V-
2
IN+
3
IN-
4
HYST
5
6 REF
6
V+ 7
OUT 8
CC2
0.1uF
JP3
FLT_LED
ROFBX
OPT
RVM2
2.49k
RBG
OPT
R1
OPT
F3
OPT
FUSE
RIS1
0.015
RNTC2
10k
Q4
4
51
2
3
6
7
8
E9
LED_PWR
RIFB1
*
D4
RED
CBGATE
*
RCS
0.01
E14
GND
E20
PULLUP
E7
CHRG
J8
GND
RVM1
35.7k
JP1
RST_LED
E11
VOUT- SYS
+
-
U2
LTC1540CMS8
GND
1
V-
2
IN+
3
IN-
4
HYST
5
6 REF
6
V+ 7
OUT 8
ROFB2
*
R4
100k
R15
20k
J5
GND
R2
OPT
E21
GND
RBFBX
OPT
R18
4.7k
RBFB3
OPT
CC1
OPT
E15
NTC
R10
20k
E1
R13
10k
ROFB1
1M
RCL
24.3k
E13
BAT
R7
100k
R14
78.7k
R17
1Meg
CIN
1uF
1210
50V
CTMR
0.1uF
CL
*
1206
50V
J4
VIN+
R16
38.3k
CNTC
OPT
J2
GND
E3
VIN
Q5
2N7002L
1
32
CIIMON
1000pF
E2
TMR
TMR
CHRGB
CHRGB
CHRGB
11
Rev. A
DEMO MANUAL
DC1830B-A/DC1830B-B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications
subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
1
1
2
2
A
A
B
B
CONT
BURST
PULSE SKIP
RUN
SHDN
.
NOTES:UNLESS OTHERWISE SPECIFIED
RESISTORS: OHMS, 0402
CAPACITORS: uF, 0402
* 79V CAPACITOR SURGE VOLTAGE
* L1 LAYOUT PADS ARE NON-STANDARD PADS DESIGNED TO
ACCOMMODATE THE WURTH ELEKTRONIC, 74435561100 INDUCTOR
OR THE WURTH ELEKTRONIC, 7443551151 INDUCTOR
47uF
20v
10uF
25v
196K
0.014
LTC4000 ITH
LTC4000 RST
MODIFIED FOR DC1830A APPLICATION
MODIFICATIONS FOR DC1830A APPLICATION
R4 196K
R17 0.014
COUT1 47uF, 20V SANYO 20TQC47MYF
COUT3 10uF, 25V MURATA GRM32DR71E106KA12
VFB VS+
VFB
VCC VCC
VOUT
BG
VOUT
VCC
TG
VIN
SW
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
MARTY M.PRODUCTION FAB- 2 11-15-10
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
MARTY M.PRODUCTION FAB- 2 11-15-10
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
MARTY M.PRODUCTION FAB- 2 11-15-10
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
DEMO CIRCUIT 1619A
12
HIGH VOLTAGE SYNCHRONOUS BUCK
N/A LT3845AEFE
NC
MARTY M.
CONTROLLER WITH ADJUSTABLE OPERATING FREQUENCY
11-15-10
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
DEMO CIRCUIT 1619A
12
HIGH VOLTAGE SYNCHRONOUS BUCK
N/A LT3845AEFE
NC
MARTY M.
CONTROLLER WITH ADJUSTABLE OPERATING FREQUENCY
11-15-10
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
DEMO CIRCUIT 1619A
12
HIGH VOLTAGE SYNCHRONOUS BUCK
N/A LT3845AEFE
NC
MARTY M.
CONTROLLER WITH ADJUSTABLE OPERATING FREQUENCY
11-15-10
CIN3
2.2uF
100V
1210
CIN3
2.2uF
100V
1210
C2
1500pF
C2
1500pF
R13
0
R13
0
J2
20V - 60V
VIN J2
20V - 60V
VIN
L1
10uH*
L1
10uH*
C9
220pF
100V
1206
C9
220pF
100V
1206
C1
0.47uF
100V
1206
C1
0.47uF
100V
1206
R12
0
R12
0
R5
16.2K
1%
R5
16.2K
1%
J4
VOUT
15V, 75W
J4
VOUT
15V, 75W
R8
100K
R8
100K
R7
20K
R7
20K
E5
GND
E5
GND
COUT4
1210
(OPT)
COUT4
1210
(OPT)
E3
SYNC
E3
SYNC
Q1
BSC123N08N
Q1
BSC123N08N
R17
0.007
2512
R17
0.007
2512
C7
1uF
16V
0603
C7
1uF
16V
0603
COUT3
22uF
16V
1210
COUT3
22uF
16V
1210
J1
GND
J1
GND
Q2
BSC123N08N
Q2
BSC123N08N
+COUT2
(OPT)
+COUT2
(OPT)
BGBG
C3
(OPT)
C3
(OPT)
C8
(OPT)
C8
(OPT)
R4
143K
1%
R4
143K
1%
R10
4.99
R10
4.99
R1
1M
R1
1M
CIN4
2.2uF
100V
1210
CIN4
2.2uF
100V
1210
E4
VOUT
E4
VOUT
C5
1500pF
C5
1500pF
R3
5.1M
5%
R3
5.1M
5%
D1
BAS521
D1
BAS521
JP2
MODE
JP2
MODE
R16
6.65
1206
R16
6.65
1206
JP1JP1
R14
0
R14
0
TGTG
C4
100pF
C4
100pF
R11
0
R11
0
R9
49.9K
R9
49.9K
J3
GND
J3
GND
U1 LT3845AEFEU1 LT3845AEFE
VFB
BURST_EN
SS
SHDN
VIN BOOST
TG
SW
VCC
VC
SYNC
FSET
SGND
BG
PGND
SENSE-
SENSE+
D3
1N4148
D3
1N4148
R6
(OPT)
R6
(OPT)
E1
VIN
E1
VIN
D2
B160
D2
B160
+
CIN2
33uF
63V*
+
CIN2
33uF
63V*
R15
0
R15
0
+
CIN1
33uF
63V*
+
CIN1
33uF
63V*
10K10K
E2
GND
E2
GND
C6
0.1uF
16V
C6
0.1uF
16V
+COUT1
68uF
16V
+COUT1
68uF
16V
R2
97.6K
R2
97.6K
Figure 4. Schematic, Modified DC1619A as Used with DC1830A
SCHEMATIC DIAGRAM
12
Rev. A
DEMO MANUAL
DC1830B-A/DC1830B-B
ANALOG DEVICES, INC. 2017-2018
09/18
www.analog.com
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.
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