DEMO MANUAL
DC1830B-A/DC1830B-B
LTC4000
Battery Charger Controller and
PowerPath Manager
DESCRIPTION
Demonstration circuit 1830B is a battery charger controller and PowerPath™ manager featuring the LTC®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 output 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 voltage 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 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
All registered trademarks and trademarks are the property of their respective owners.
This circuit was designed to demonstrate the high levels
of performance and small solution size attainable using
PERFORMANCE SUMMARY
Specifications are at TA = 25°C
SYMBOL
PARAMETER
CONDITIONS
VIN
Input Supply Range
This is the Input Voltage of the Front End DC/DC Supply
IIN
Input Current Limit
This is the Input Current Limit Set by the LTC4000
VFLOAT
Battery Float Voltage
IBAT
Battery Charge Current
Output Regulation
MIN
Charge Termination Time
VOUT-SYS
System Output Voltage
IOUT-SYS
System Output Current Range
Line and Load (20V to 60V, 0A to 4.5A)
VBAT = VFLOAT
12.3
*Input Current Limited Below 35VIN
MAX
0
14.6
UNITS
60
V
14.8
V
3
14.4
Battery Charge Current – Trickle
tT
TYP
20
A
±0.005
%
5
A
0.6
A
2.9
hours
14.6
15.5
V
5.5*
A
Rev. A
1
DEMO MANUAL
DC1830B-A/DC1830B-B
QUICK START PROCEDURE
Demonstration circuit 1830 is offered for use in combination 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 separate demonstration board is available for the LTC4000/
LTC3789 buck-boost combination, the DC1721A. The
LTC4000 data sheet should be used for guidance in determining 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.
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.
NOTE: The PFETs supplied on this board are rated at 30V.
7. Turn on the power at the input.
Once the circuit has been customized to suit the application at hand, it is easy to set up to evaluate the performance of the LTC4000 when combined with a suitable 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:
NOTE: If there is no output, temporarily disconnect
the load to make sure that the load is not set too high.
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 terminals VIN and GND.
NOTE:
a. Input voltages lower than 20V can keep the converter from turning on due to the undervoltage
lockout feature of the LTC4000.
8. Once the proper BAT output voltage is again established, adjust the load and/or source within the operating range and observe the battery float voltage regulation, 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 conditions, lower current available to VOUT-SYS, or where
continuous short-circuit protection on VOUT-SYS is
not required.
b. If efficiency measurements are desired, refer to
Figure 1 for the test setup.
Rev. A
2
DEMO MANUAL
DC1830B-A/DC1830B-B
QUICK START PROCEDURE
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.
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, ripple voltage, efficiency, input and output current limit,
and other desired parameters.
13. Turn on the power at the input.
Table 1. LTC4000 Charger Setup Parameters and Reference Values
REFERENCE
DESCRIPTION
NOMINAL VALUE (V)*
IIL
Input Current Regulation/Limit
(50µA • RIL)/20
MIN/MAX
ICL
Charge Current Regulation/Limit
ICL
Trickle Charge Current Regulation/Limit
VBAT-FLOAT
Battery Float Voltage
1.136V
1.125/1.147
VOUT
System Voltage
1.193V
1.181/1.204
CONDITIONS
45/55
50mV max
(50µA • RCL)/20
45/55
50mV max
(5µA • RCL)/20
4.5/5.5
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
CX
C/X Monitor/Charge Termination
(5µA • RCX – 10mV)/20
1.181/1.204
4.5/5.5
TMR
Charge Termination Timer
104S/nF
83/126
Falling, (40mV Hysteresis)
Short TMR to BIAS for C/X Termination
*Normalized to sense point
Rev. A
3
DEMO MANUAL
DC1830B-A/DC1830B-B
QUICK START PROCEDURE
–
DC
SOURCE
+
+
OR
–
–
+
+
SCOPE
–
+
–
+
LOAD
–
Figure 1. Fixture Connections and Measurement Equipment Setup
Rev. A
4
__
1ST PROTOTYPE
1
DEMO MANUAL
DC1830B-A/DC1830B-B
QUICK START PROCEDURE LTC4000 SYSTEM CONTROL LOOPS
VIN
VOUT-SYS
Rsense-input
Load
DC - DC CONVERTER
GND
VC / ITH
BAT
Rsense-charge
SHDN
Battery
RST
LTC4000
GND
Gm
A5
Gm
A7
Gm
A4
Gm
A6
Figure 2. Block Diagram with Typical DC/DC Converter
CUSTOMER NOTICE
APPROVALS
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.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
TECHNOLOGY
AK
DAVID B.
TITLE: SCHEMATIC
SIZE
N/A
SCALE = NONE
163
Milp
Pho
Fax
LTC
DATE:
16.8V, 5A BATTERY CHARG
10-36 VIN, STEP-UP/DO
IC NO.
LTC4000EGN, LTC
DEMO CIRCUIT 1
Friday, June 29, 2012
2
Rev. A
5
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
Rev. A
6
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)
Rev. A
7
DEMO MANUAL
DC1830B-A/DC1830B-B
PARTS LIST
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
Rev. A
8
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
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
VISHAY, NTHS0603N02N1002J
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
MILL-MAX, 2308-2-00-80-00-00-07-0
Hardware: For Demo Board Only
1
16
E1 - E6, E9 - E14, E18, E19, E20, E21
TESTPOINT, TURRET, 0.061" pbf
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)
Rev. A
9
A
B
C
D
RNTC3
10k
R8
10k
E6
J5
IL/IFB
E5
J4
E4
E3
J3
J2
E2
E1
BIAS
GND
GND
VIN+
VIN+
3V - 60V
GND
VIN
VIN
TO DC / DC
GND
GND
VOUT
FLT
CHRG
BIAS
E8
E7
JP2
CHRGB
27
26
R10
20k
5
R12
1Meg
R11
38.3k
6
5
4
3
6 REF
HYST
IN-
IN+
+
-
IN
CLN
ITH
D1
BZT52C3V0S-7-F
SOD323
RVM2
2.49k
DISABLE
24
0.1uF
4.22k
CIN
1uF
50V
1210
ENABLE
OPT
R1
OPT
R20
CHARGE
CVM
OPT
BIAS
E20
CC2
RC1
CC1
OPT
COUT
2.2uF
50V
1206
OUT
8
2
1
IL/IFB
2N7002L
1
Q5
U2
LTC1540CMS8
OPTIONAL THERMAL PROTECTION FOR Q1
DURING VOUT-SYS SHORT CIRCUIT
R9
46.4k
*
*
RIFB1
E22
E19
RVM1
35.7k
0.015
RIS1
PULLUP
ITH
GND
7
6
5
8
4
23
IID
7
6
5
8
Q3
OPT
4
RNTC2
10k
R13
10k
BIAS
CIGATE
OPT
3
2
1
4
*
22
IGATE
J1
RIG
OPT
RBG
OPT
CIIMON
1000pF
0.1uF
CTMR
JP3
JP4
100k
R7
100k
R4
BIAS
R15
20k
R14
78.7k
R17
1Meg
R16
38.3k
6
5
4
3
6 REF
HYST
IN-
IN+
+
-
R6
4.7k
R5
2.2k
BIAS
CIL
OPT
OUT
*
0
NTC
D4
RED
*
R21
ROFB1
1M
D2
GREEN
3
RCL
24.3k
3
*
*
84.5k
RBFB2
*
E10
CCX
OPT
CX
BIAS
NTC
R18
4.7k
7
13
14
LOADED
NOT LOADED
NOT LOADED
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
CUSTOMER NOTICE
LTC4000-1
DISABLE
LOADED
NOT LOADED
R2
OPT
CBAT
150uF
35V
2
SCALE = NONE
DESCRIPTION
VOUT- SYS
GND
IIMON
IBMON
DATE
07 - 03 - 12
RIL
2k
2k
18.2k
18.2k
CL
2.2uF
0 OHM
OPT
0 OHM OPT
10.0k 2.2uF
RCX
10.0k
OPT
OPT
10nF
10nF
DATE:
N/A
SIZE
07 - 03 - 12
IC NO.
1
SHEET
1
LTC4000EUFD / LTC4000EUFD - 1
DEMO CIRCUIT 1830B - A / B / C / D
OF
1
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
OPT
OPT
84.5k
84.5k
ROFB2
BATTERY CHARGER CONTROL AND POWER MANAGEMENT
TECHNOLOGY
68.1k
OPT
68.1k
OPT
RIFB1
CBGATE
NOTE: UNLESS OTHERWISE SPECIFIED
E17
E16
E21
GND
J9
J8
GND
E15
NOT ON THE BOARD
GND
BAT
NTC
E14
E13
DAVID B.
APPROVED
VOUT- SYS
GND
E12
J7
BAT
E11
J6
PRODUCTION FAB
1
REVISION HISTORY
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
TITLE: SCHEMATIC
LRC-LRZ-2010LF-R000
DAVE B.
NC
SI7135DP
Q2 / R22
1
-
CL1 - CL5
OPT
1206 X
5
PLCS
REV
ECO
LRC-LRZ-2010LF-R000
SI7135DP
*
CL
50V
1206
APPROVALS
0 OHM
0 OHM
OPT
OPT
R21
RST
E18
CBIAS
1uF
16V
REG CKT. FOR Q2
JP1
NOT LOADED
LOADED
LOADED
*
TMR
R3
OPT
CNTC
OPT
RST_LED
ENABLE
RCX
R19
100k
BIAS
BIAS
NTC
+
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 PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
-C
-D
LTC4000-1
CHRGB
F3
FUSE
OPT
U1
LTC4000EUFD / LTC4000EUFD - 1
OPT
RBFB3
RBFB1
1M
ASSY TP CKT. FOR Q1
GND
-A
-B
C1
4.7uF
10V
D3
RED
LTC4000
LTC4000
U1
LED_PWR
E9
ROFB2
ROFBX
OPT
RBFBX
OPT
F2
FUSE
F1
FUSE
OPT
Figure 3. Schematic, DC1830A
2N7002L
8 1
Q6
LTC1540CMS8
U3
7
6
5
8
CCL
RIL OPT
CIBMON
1000pF
*
Q4
OPT
IL/IFB
THERMAL REGULATION FOR Q2
DURING 'INSTANT-ON' OPERATION
ENABLE
FLT_LED
DISABLE
DISABLE
3
2
1
7
6
5
8
CBGATE
*
Q2 / R22
TMR
3
2
1
CHRG_LED
ENABLE
3
2
1
RCS
0.01
20
CSP
4
18
BGATE
4
17
BAT
Q1
Si7135DP
21
OFB
VOUT
7
V+
1
15
FROM DC / DC
3V - 30V
GND
1
V-
2
25
CC
VM
3
2
ENC
5
CHRG
12
FLT
11
IIMON
3
19
CSN
IBMON
6
IL / IFB
4
TMR
9
7
V+
V2
3
16
4
GND
1
CHRGB
2
CL
8
GND
29
FBG
GND
10
GND
28
BFB
RST
10
2
5
A
B
C
D
DEMO MANUAL
DC1830B-A/DC1830B-B
SCHEMATIC DIAGRAM
Rev. A
B
A
SYNC
LTC4000 ITH
VFB
VCC
E2
J1
J2
E3
JP2
MODE
LTC4000 RST
GND
GND
VIN
20V - 60V
E1
10K
BURST
CIN2
33uF
63V*
CIN3
2.2uF
100V
1210
R5
16.2K
1%
R4
1%
(OPT)
R6
VFB
196K
143K
(OPT)
C3
SHDN
RUN
CIN4
2.2uF
100V
1210
R7
20K
R8
100K
R9
49.9K
1500pF
C2
100V
1206
C1
0.47uF
C4
100pF
R2
97.6K
C5
1500pF
JP1
R1
1M
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
MODIFICATIONS FOR DC1830A APPLICATION
R4
196K
R17
0.014
COUT1 47uF, 20V SANYO 20TQC47MYF
COUT3 10uF, 25V MURATA GRM32DR71E106KA12
R3
5.1M
5%
* 79V CAPACITOR SURGE VOLTAGE
CIN1 +
33uF
63V*
PULSE SKIP
CONT .
+
FSET
SYNC
VC
VFB
LT3845AEFE
SENSE-
SENSE+
PGND
BG
VCC
SW
TG
BOOST
0
R11
TG
4.99
R10
0
D3
1N4148
C8
(OPT)
BG
R13
16V
VCC
D1
BAS521
R12
C6
0.1uF
0
C7
1uF
16V
0603 BG
VCC
TG
R15
R14
0
0
C9
220pF
100V
1206
R16
6.65
1206
10uH*
L1
D2
B160
VS+
0.014
0.007
2512
R17
2
47uF
20v
COUT1 +
68uF
16V
2
-
DESCRIPTION
COUT2
(OPT)
10uF
25v
COUT3
22uF
16V
1210
VOUT
PRODUCTION FAB
COUT4
(OPT)
1210
E5
J3
J4
E4
VOUT
DATE
11-15-10
GND
GND
15V, 75W
VOUT
VOUT
MARTY M.
APPROVED
REVISION HISTORY
APPROVALS
SIZE
IC NO.
1630 McCarthy Blvd.
Milpitas, CA 95035
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
2
SCALE = NONE
DATE:
N/A
11-15-10
LT3845AEFE
DEMO CIRCUIT 1619A
SHEET
1
OF
REV.
2
2
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
Phone: (408)432-1900 www.linear.com
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
TECHNOLOGY Fax: (408)434-0507
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. NC
LTC Confidential-For Customer Use Only
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG. MARTY M. TITLE: SCHEMATIC
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
HIGH VOLTAGE SYNCHRONOUS BUCK
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
CONTROLLER WITH ADJUSTABLE OPERATING FREQUENCY
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
CUSTOMER NOTICE
+
REV
ECO
MODIFIED FOR DC1830A APPLICATION
* L1 LAYOUT PADS ARE NON-STANDARD PADS DESIGNED TO
ACCOMMODATE THE WURTH ELEKTRONIC, 74435561100 INDUCTOR
OR THE WURTH ELEKTRONIC, 7443551151 INDUCTOR
NOTES:UNLESS OTHERWISE SPECIFIED
RESISTORS: OHMS, 0402
CAPACITORS: uF, 0402
Q2
BSC123N08N
SW
Q1
BSC123N08N
VIN
Figure 4. Schematic, Modified DC1619A as Used with DC1830A
BURST_EN
SS
SHDN
VIN
U1
SGND
VIN
1
B
A
DEMO MANUAL
DC1830B-A/DC1830B-B
SCHEMATIC DIAGRAM
Rev. A
11
DEMO MANUAL
DC1830B-A/DC1830B-B
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.
Legal Terms and Conditions
By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and
conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation
Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”)
and Analog Devices, Inc. (“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to
Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and
agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted
is expressly made subject to the following additional limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third
Party to access the Evaluation Board. As used herein, the term “Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is
NOT sold to Customer; all rights not expressly granted herein, including ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all
be considered the confidential and proprietary information of ADI. Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of
use of the Evaluation Board or termination of this Agreement, Customer agrees to promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile
or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited
to soldering or any other activity that affects the material content of the Evaluation Board. Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS
Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF
LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY
DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS
LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF THE EVALUATION BOARD, INCLUDING
BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE AMOUNT OF ONE
HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable United States
federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of Massachusetts
(excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby submits
to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.
Rev. A
12
09/18
www.analog.com
ANALOG DEVICES, INC. 2017-2018
工商网监
湘ICP备2023018690号
