Mixed-signal and digital signal processing ICs | Analog Devices
Datasheet for ANALOG DEVICES models including: LTC3337 Primary Battery SOH Monitor with Precision Coulomb Counter, LTC3337, Primary Battery SOH Monitor with Precision Coulomb Counter, Battery SOH Monitor, Precision Coulomb Counter
LTC3337 Datasheet and Product Info | Analog Devices
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DocumentDocumentDEMO MANUAL DC2973A
LTC3337 Primary Battery SOH Monitor with
Precision Coulomb Counter
DESCRIPTION
Demonstration circuit 2973A shows the LTC®3337 Primary Battery State of Health (SOH) monitor with precision coulomb counter operating with a configurable peak current limit. The LTC3337 supports input voltages from 1.8V to 5.5V and a peak current up to 100mA with a quiescent current of 100nA. Coulomb count, battery voltage, and Battery Series Resistance (BSR) are measurable and can be used to quantify the charge state and health of a battery.
The DC2973A demonstrates a simple layout for the highest-power configuration of the LTC3337. The circuit can be reduced for lower IPEAK levels. The demo board can be connected directly to a PC using a micro USB cable in order to run a GUI and configure simple a Battery State of Charge (SOC) monitor. Source code for the GUI is available and can be used as a starting point for LTC3337 firmware development.
Design files for this circuit board are available.
All registered trademarks and trademarks are the property of their respective owners.
PERFORMANCE SUMMARY
SYMBOL VIN IOUT
PARAMETER Input Voltage Range Output Current
Specifications are at TA = 25°C CONDITIONS
IPK2 IPK0 = 111
MIN
TYP
MAX UNITS
1.8
5.5
V
100
mA
BOARD PHOTO
Rev. 0
1
DEMO MANUAL DC2973A
QUICK START PROCEDURE
Refer to Figure 1 for the proper measurement equipment setup and jumper settings. Please follow the procedure below to familiarize yourself with the DC2973A.
1. Configure the IPEAK jumpers for your chosen current limit. Choose R1 based on the formula below:
R1 = 10/IPEAK ()
R1 Power Rating 2.5 · IPEAK (W)
Or use an electronic load in CC mode pulling IPEAK/2.
2. Connect DC2973A to a computer using a USB cable and launch QuikEvalTM to download and run the GUI (see GUI Application section for download instructions).
3. Enable PS1.
4. In the GUI, click the Battery Setup button and configure for your chosen battery (or use the settings shown below for a demo). Once finished, click the start button.
5. The coulomb counter is now monitoring the SOC of the battery. For higher resolution visibility, switch to the Engineering tab to view the raw Accumulated Charge count.
6. Once familiar with the operation, replace PS1 and R1 with your battery and system load, respectively.
Figure 1. Quick Start Setup for the DC2973A Demo Circuit
Rev. 0
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DEMO MANUAL DC2973A
CONFIGURING IPEAK
The peak current limit of the LTC3337 (IPEAK) is configured by moving the JP1-JP3 shunts on the DC2973A demo board. Note that the IPEAK setting is locked at startup.
Refer to Table 1 to configure the IPEAK setting. This table is also located on the back of the DC2973A PCB.
Table 1. IPEAK Configuration
JUMPER CONFIGURATION
IPK2
IPK1
IPK0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
IPEAK 5mA 10mA 15mA 20mA 25mA 50mA 75mA 100mA
SOFTWARE TOOLS
On-Board Digital Interface
The LTC3337 demo board includes an Atmel SMART SAM D21 processor with an Arduino bootloader that makes it compatible with the Arduino IDE. This means users can prototype processor functionality directly in the free Arduino IDE. The SDK mentioned below includes an Arduino example project that can be opened and uploaded to the board through the Arduino IDE.
Software Development Kit
To help with learning and development of LTC3337 applications, there exists a Software Development Kit (SDK) that makes interfacing with the LTC3337 as simple as possible. The package includes a few example programs and comes fully equipped with register names and value formatting. Resources are given for both C code (with Arduino examples) and Python code. This SDK can be downloaded from the LTC3337 product webpage. Further instructions to use the SDK are included within the download.
Restoring GUI-Compatible Firmware
If the onboard firmware is changed (to upload SDK firmware, for example), it can be restored at any time through the GUI. In this case, the GUI will need to be launched manually because QuikEval will not recognize the board once it has been reprogrammed. By default, the GUI installs to:
C:\Program Files (x86)\LTC\LTC3337 GUI\em3337.exe
Debugging Custom Designs
The DC2973A's default firmware and engineering GUI tab are designed to give a high-speed debugging environment for LTC3337 operation. This functionality can be easily extended to interface with your own custom LTC3337 circuit design. To use the engineering GUI tab with a custom circuit board, simply leave the LTC3337 on the DC2973A unpowered and connect your own board to the SMBus interface accessible through header J3.
Rev. 0
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DEMO MANUAL DC2973A
GUI APPLICATION
Introduction to the GUI
The LTC3337 GUI provides a graphical interface for some of the main features of the LTC3337. In addition, it provides an advanced debugging interface that can be used in evaluating operation of the DC2973A as well as a customer's own design.
To use the DC2973A, the PC must first have the proper software driver and GUI installed. Download the QuikEval software from www.analog.com and install the QuikEval software by running the executable ltcqev.exe. Follow the instructions to connect the DC2973A.
For more detail on GUI functions, launch the GUI and go to Window Show Help Guide.
GUI Layout
The LTC3337 GUI is divided into a Dashboard tab, an Engineering tab, and a Schematic tab. The Dashboard tab shows a graphical representation of a some of the
LTC3337's core functionality. The Engineering tab shows all registers and is intended to be used for lower-level development and debugging purposes. The Schematic tab just displays the schematic for reference.
Dashboard Tab
The Dashboard tab shows all the basic information needed to monitor a battery's state of charge. Along with the accumulated charge information, the battery voltage, series resistance, and average current are also shown. While the dashboard is open, the GUI reads data from the LTC3337 every 200ms.
To set up a battery for SoC measurement, click the Battery Setup button in the bottom-left corner. From there, configure your battery settings as required and click the Start button. This sets a target accumulated charge value at which the remaining capacity of the battery is considered to be 0%. After starting the test, intermediate calculations can be viewed by showing the Console window.
Figure 2. The Dashboard Tab
Rev. 0
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DEMO MANUAL DC2973A
GUI APPLICATION
Engineering Tab
The Engineering tab is an advanced debugging tool which allows high-speed reading of any register. Register groupings can be displayed by activating the checkboxes in the Categories section.
To read a register, simply double-click the register name or value. To read all shown registers, double-click anywhere in the empty background space. To continuously read all shown registers, right-click and select Continuous Read from the context menu. When continuously reading, the GUI will poll all of the displayed registers as fast as possible. By default, a register entry will flash green when the new data is different from the previous data; this can be changed in the right-click context menu.
To write a register, right-click on a writable register and select Write... from the context menu. This will bring up a dialog with a few options for writing values.
For detailed information about a register, hovering over it for about a second will display the same tool tips as are visible in the other tabs of the GUI.
By default, register entries are displayed as formatted decimal values or Booleans. This can be changed to raw binary or hexadecimal notation by right-clicking on an entry and choosing Select Format.
Tabs can be added to the Engineering view by clicking the + button in the top-right corner. This allows the user to change between viewing different register groupings at ease.
Consult the Help Guide for more detail on the Engineering tab.
Figure 3. The Engineering Tab
Rev. 0
5
DEMO MANUAL DC2973A GUI APPLICATION
Schematic Tab The Schematic Tab simply shows the DC2973A schematic for quick reference while using the GUI.
Figure 4. The Schematic Tab
Rev. 0
6
DEMO MANUAL DC2973A
GUI APPLICATION
Logger Window
The Logger can be launched by going to Window Show Logger. This feature allows configurable logging of bitfields and can be used for rapid or long-term data
collection. Data can be exported into a CSV format (for import to Excel) or to a SQL database. Note that other GUI tabs will be inactive while logging, so writing bitfields is disabled.
Figure 5. The Logger Window
Rev. 0
7
DEMO MANUAL DC2973A
PARTS LIST
ITEM QTY REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
Required Circuit Components
1 1 C1
CAP., 10µF, X5R, 10V, 10%, 0603
AVX, 0603ZD106KAT2A MURATA, GRM188R61A106KAALD SAMSUNG, CL10A106KP8NNNC
2 1 C2
CAP., 150µF, X5R, 6.3V, 20%, 1210
SAMSUNG, CL32A157MQVNNNE
3 0 C3
CAP., 180µF, ALUM POLY, OS-CON, 25V, 20%, 8mm × 11.9mm, SMD, RADIAL, E12
PANASONIC, 25SVPF180M
4 1 C4
CAP., 10µF, X5R, 6.3V, 20%, 0603
MURATA, GRM188R60J106ME47D MURATA, GRM188R60J106ME47J TAIYO YUDEN, JMK107ABJ106MA-T AVX, 06036D106MAT2A NIC, NMC0603X5R106M6.3TRPF TDK, C1608X5R0J106M080AB
5 4 C5, C6, C7, C8
CAP., 0.1µF, X5R, 10V, 20%, 0402
WURTH ELEKTRONIK, 885012105010
6 2 C9, C10
CAP., 22pF, NP0, 50V, 5%, 0402
WURTH ELEKTRONIK, 885012005057
7 2 C11, C12
CAP., 1µF, BJ, 10V, 20%, 0402
TDK, CGB2A1JB1A105M033BC
8 1 C13
CAP., 0.01µF, X7R, 25V, 10%, 0402
WURTH ELEKTRONIK, 885012205050
9 1 C14
CAP., 2.2µF, X5R, 10V, 20%, 0402
WURTH ELEKTRONIK, 885012105013
10 0 C15, C16
CAP., 10F, ULTRA, 2.7V, 10/+20%, RADIAL, THT
NESSCAP CO. LTD., BCAP0010 P270 S01 NESSCAP CO. LTD., ESHSR-0010C0-002R7
11 0 C17
CAP., 0.12F, SUPERCAP, HIGH TEMP, 5.5V, 20%, 20mm × CAP-XX, HA202F 18mm × 2.5mm, SMD, DUAL CELL
12 2 D1, D4
LED, YELLOW, WATERCLEAR, 0603
WURTH ELEKTRONIK, 150060YS75000
13 2 D2, D3
LED, BRIGHT GREEN, WATERCLEAR, 0603
WURTH ELEKTRONIK, 150060VS75000
14 4 E1, E2, E3, E4
TEST POINT, TURRET, 0.094" MTG. HOLE, PCB 0.062" THK MILL-MAX, 2501-2-00-80-00-00-07-0
15 3 E5, E6, E7
TEST POINT, TURRET, 0.064" MTG. HOLE, PCB 0.062" THK MILL-MAX, 2308-2-00-80-00-00-07-0
16 1 J1
CONN., uUSB 2.0, RCPT., 5-PIN, 1PORT, REVERSE MOUNT, R/A HORZ., TYPE B, FLANGELESS
TE CONNECTIVITY, 1932788-1
17 1 J2
CONN., HDR, MALE, 2x5, 1.27mm, VERT, ST, THT
WURTH ELEKTRONIK, 62201021121
18 1 J3
CONN., HDR, MALE, 1x5, 2.54mm, VERT, ST, THT
SAMTEC, TSW-105-07-L-S
19 4 JP1, JP2, JP3, JP4 CONN., HDR, MALE, 1x3, 2mm, VERT, ST, THT, 10u" Au SAMTEC, TMM-103-02-L-S
20 1 L1
IND., 30 AT 100MHz, BEAD, 10%, 6A, 10m, 0805, 1LN TDK, MPZ2012S300AT000
21 1 LB1
LABEL SPEC, DEMO BOARD SERIAL NUMBER
BRADY, THT-96-717-10
22 3 M1, M2, M3
XSTR., MOSFET, N-CH, 20V, 1.4A, SOT-323, AEC-Q200 INFINEON, BSS816NWH6327XTSA1
23 3 M4, M5, M6
XSTR., MOSFET, DUAL, N-CH, 280mA, SOT-563
DIODES INC., 2N7002VAC-7
24 4 MH1, MH2, MH3, MH4 STANDOFF, NYLON, SNAP-ON, 0.50"
KEYSTONE, 8833
25 1 PCB1
PCB, DC2973A
ADI APPROVED SUPPLIER, 600-DC2973A
26 3 R1, R2, R6
RES., 10k, 5%, 1/16W, 0402, AEC-Q200
NIC, NRC04J103TRF ROHM, MCR01MZPJ103 VISHAY, CRCW040210K0JNED
27 0 R3
RES., OPTION, 0603
28 2 R4, R5
RES., 0, 1%, 0603, AEC-Q200
KOA SPEER, RK73Z1JTTDD VISHAY, CRCW06030000Z0EA
29 3 R7, R16, R17
RES., 4.7k, 5%, 1/16W, 0402, AEC-Q200
NIC, NRC04J472TRF VISHAY, CRCW04024K70JNED
Rev. 0
8
DEMO MANUAL DC2973A
PARTS LIST
ITEM QTY REFERENCE 30 3 R8, R13, R14
31 3 R9, R10, R11
PART DESCRIPTION RES., 2.2k, 5%, 1/16W, 0402, AEC-Q200
RES., 301, 1%, 1/10W, 0603, AEC-Q200
32 1 R12 33 1 R15 34 1 R18 35 1 R19 36 1 R20
RES., 10k, 5%, 1/16W, 0402 RES., 1M, 5%, 1/16W, 0402, AEC-Q200 RES., 100k, 5%, 1/16W, 0402, AEC-Q200 RES., 196k, 1%, 1/10W, 0603 RES., 115k, 1%, 1/10W, 0603
37 1 R21
RES., 1, 5%, 1/16W, 0402, AEC-Q200
38 0 TP1, TP2 39 1 U1
40 1 U2 41 1 U3 42 1 U4
TESTPOINT, PCB COPPER FEATURE PRIMARY BATTERY SOH MONITOR W/PRECISION COULOMB COUNTER, GQFN-12 IC, USB 2.0 µModule® TRANSCEIVER, BGA-44 IC, MEMORY, MCU, 32-BIT, 256KB FLASH, TQFP48 IC, REG LDO ADJ, 100mA, TSOT23-5
43 4 XJP1, XJP2, XJP3, XJP4
44 1 Y1
CONN., SHUNT, FEMALE, 2 POS, 2mm CRYSTAL, 32.768kHz, 12.5pF, 3.2mm × 1.5mm SMD
MANUFACTURER/PART NUMBER
VISHAY, CRCW04022K20JNED NIC, NRC04J222TRF
PANASONIC, ERJ3EKF3010V VISHAY, CRCW0603301RFKEA NIC, NRC06F3010TRF
SAMSUNG, RC1005J103CS YAGEO, RC0402JR-0710KL
VISHAY, CRCW04021M00JNED NIC, NRC04J105TRF
ROHM, MCR01MZPJ104 VISHAY, CRCW0402100KJNED
VISHAY, CRCW0603196KFKEA YAGEO, RC0603FR-07196KL
NIC, NRC06F1153TRF VISHAY, CRCW0603115KFKEA YAGEO, RC0603FR-07115KL
KOA SPEER, RK73B1ETTP1R0J STACKPOLE ELECTRONICS, INC., RMCF0402JT1R00 VISHAY, CRCW04021R00JNED
ANALOG DEVICES, LTC3337ERC#PBF
ANALOG DEVICES, LTM2884CY#PBF
MICROCHIP, ATSAMD21G18A-AUT
ANALOG DEVICES, LT1761ES5-BYP#PBF ANALOG DEVICES, LT1761ES5-BYP#TRMPBF ANALOG DEVICES, LT1761ES5-BYP#TRPBF
WURTH ELEKTRONIK, 60800213421
ABRACON, ABS07-32.768kHz-4-T ECS INC., ECS-.327-12.5-34B-TR KYOCERA, ST3215SB32768H5HPWAA NDK, (See DFF)
Rev. 0
9
DEMO MANUAL DC2973A SCHEMATIC DIAGRAM
Rev. 0
10
5
4
3
2
1
REVISION HISTORY
ECO REV DESCRIPTION
APPROVED DATE
-
02
PRODUCTION
ZP
4-23-2020
D
D
* REMOVE R5 BEFORE CONNECTING TO BAL PIN.
AVcc 2
BAT_IN E1
BAT_IN
U1
11 BAT_IN
AVcc
BAT_OUT 12
INSTALL R5 IF BAL PIN NOT USED.
1.8V - 5.5V
GND E2
C
USB_PWR
+ C3 OPT
FOR HIGH-ESR BATTERIES
ONLY ONE OF R3 OR R4 SHOULD BE POPULATED AT ONCE
AVcc
R3 OPT R4 0603 0
0603
C1 10uF
DVcc R1 10k 5%
3 DVcc
R2 10k 5%
LTC3337ERC
BAL 1
C2 150uF 1210 6.3V 20%
R5 * 0 0603
+ C15 10F OPT
3 BAL
+ C16 10F OPT
2
1
-
+
C17 120mF HA202F OPT
SCL
4 SCL
BATOUT_OK 7
BATOUT_OK
SDA
5 SDA
IRQ
6 IRQ
E3 BAT_OUT 1.8V - 5.5V 100mA
E4 GND
C
E5 BATOUT_OK E6 GND
10 IPK0
9 IPK1
8 IPK2
13 GND
IPK2 IPK1 IPK0 IPEAK
1
BAT_IN JP1 IPK2
1
BAT_IN JP2 IPK1
1
BAT_IN JP3 IPK0
0 0 0 5mA 0 0 1 10mA
2
12
12
1
0 1 0 15mA
PCA ADDITIONAL PARTS
B
0
0
0
0 1 1 20mA
MH1 STANDOFF,NYLON,SNAP-ON,0.50" B
3
3
3
1 0 0 25mA
MH2 STANDOFF,NYLON,SNAP-ON,0.50"
USB_PWR
1 0 1 50mA
MH3 STANDOFF,NYLON,SNAP-ON,0.50"
1 1 0 75mA
MH4 STANDOFF,NYLON,SNAP-ON,0.50"
1
JP4
USB
2
1 1 1 100mA
LB1 LABEL PCB1 PCB, DC2973A
REV02
EXT
3
E7 EXT_LED_PWR
1.8V - 5.5V
LED_PWR R6 10k 5%
R7 4.7k 5%
IRQ D1 YELLOW
R8 2.2k 5%
BATOUT_OK D2 BRIGHT GREEN
M1
M2
M3
3
3
BSS816NWH6327XTSA1
A
3
IRQ 1
1
BATOUT_OK 1
UNLESS OTHERWISE SPECIFIED 1. RESISTORS: OHMS, 0402, 1%, 1/16W 2. CAPACITORS: 0402, 10%, 25V
CUSTOMER NOTICE
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A PCB DES. NC
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
APP ENG. ZP
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
IC NO.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
LTC3337
STNCL1 TOOL, STENCIL, 700-DC2973A REV02
www.analog.com A TITLE: DEMO CIRCUIT SCHEMATIC, PRIMARY BATTERY SOH MONITOR WITH PRECISION COULOMB COUNTER
2
2
2
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SKU NO.
DC2973A
SIZE: 8.5x11
PCA ASS'Y DWG:
SCALE = NONE 705-DC2973A_REV02
DATE:
04-23-2020
SCHEMATIC NO. AND REVISION:
710-DC2973A_REV02
SHEET 1 OF 2
5
4
3
2
1
Rev. 0
11
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.
5
4
Vcc U4
Vcc_MCU
1 IN
OUT 5
3.3V
C12
D
1uF
BYP 3
C13 R19 0.01uF 196k
C14 2.2uF
2 GND ADJ 4
0603
LT1761-S5-BYP
R20 115k 0603
VCCin
C
C4
Close to J1.1
10uF 6.3V 0603
R21 1
5%
U2
J1
VBUS 1 ID 4
5V
A11 A10 A9 A8
VCC VCC VCC VCC
A7 VBUS
D+ D-
3 2
A2 A1
D1+ D1-
GND GND
B
GND 5
A5
VLO
7 6
uUSB 2.0 1932788-1
A4 ON A3 SPND-PWR
A6 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11
GND GND GND GND GND GND GND GND GND GND GND GND
LTM2884-BGA
A
UNLESS OTHERWISE SPECIFIED 1. RESISTORS: OHMS, 0402, 1%, 1/16W 2. CAPACITORS: 0402, 10%, 10V
5
Vcc 5V
VCC2 VCC2 VCC2 VCC2
L11 L10 L9 L8
VLO2 L5
D2+ D2-
L2 L1
R9 R10 R11 301 301 301 0603 0603 0603
GND2 GND2 GND2 GND2 GND2 GND2 GND2 GND2 GND2 GND2 GND2 GND2 GND2 GND2 GND2
L3 L4 L6 L7 K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11
M5A 2N7002VAC-7
4
3
2
1
5 GNDANA 18 GND1
40 35 GND2 42 GND3
Vcc_MCU
R13 2.2k 5%
D3 BRIGHT GREEN
STATUS
Vcc_MCU
R14 2.2k
5%
R15
1M 5%
D4 YELLOW
COMM
J2 1 3 5 7 9
2 4 6 8 10 RESETN
M6B
M6A 2N7002VAC-7
Vcc_MCU
R12 10k
L1
30 OHMS@100MHz
1
2
6
17
36
44 C5 C6 C7 C8 0.1uF 0.1uF 0.1uF 0.1uF
5%
VDDANA VDDIO1 VDDIO2 VDDIN
RESETN RESETN
C9 22pF 50V 5%
TP1 TP2
48 39
PB3/EIC/AIN11/SCOM5PAD1 PA27/EIC
34 33
PA25/EIC/SCOM3PAD3+/TC5 PA24/EIC/SCOM3PAD2+/TC5
Y1
1
2
1 PA0/XIN32/EIC/SCOM1PAD0/TC2 2 PA1/XOUT32/EIC/SCOM1PAD1/TC2
32.768kHz
C10 22pF 50V 5%
C11 43 VDDCORE1 1uF
U3
ATSAMD21G18A-AUT
PB2/EIC/AIN10/SCOM5PAD0 PA28/EIC
PA30/EIC/SCOM1PAD2/TC1 PA31/EIC/SCOM1PAD3/TC1
47 41 45 46
PB23/EIC/SCOM5PAD3 PB22/EIC/SCOM5PAD2
38 37
PA23/I2C/EIC/SCOM5PAD1+/TC4 PA22/I2C/EIC/SCOM5PAD0+/TC4
PA21/EIC/SCOM5PAD3+ PA20/EIC/SCOM5PAD2+ PA19/EIC/SCOM1PAD3+/TC3 PA18/EIC/SCOM1PAD2+/TC3 PA17/I2C/EIC/SCOM1PAD1+/TC2 PA16/I2C/EIC/SCOM1PAD0+/TC2
32 31 30 29 28 27 26 25
PA15/XOUT/EIC/SCOM2PAD3+/TC3 PA14/XIN/EIC/SCOM2PAD2+/TC3 PA13/I2C/EIC/SCOM2PAD1+/TC2 PA12/I2C/EIC/SCOM2PAD0+/TC2 PB11/EIC/SCOM4PAD3/TC5 PB10/EIC/SCOM4PAD2/TC5
PA11/EIC/AIN19/SCOM2PAD3+/TC1 PA10/EIC/AIN18/SCOM2PAD2+/TC1 PA9/I2C/EIC/AIN17/SCOM2PAD1+/TC0
PA8/I2C/AIN16/SCOM2PAD0+/TC0
24 23 22 21 20 19 16 15 14 13
PA7/EIC/AIN7/SCOM0PAD3/TC1 PA6/EIC/AIN6/SCOM0PAD2/TC1 PA5/EIC/AIN5/SCOM0PAD1/TC0 PA4/EIC/REF/AIN4/SCOM0PAD0/TC0 PB9/EIC/AIN3/SCOM4PAD1//TC4 PB8/EIC/AIN2/SCOM4PAD0/TC4
PA3/EIC/REF/AIN1 PA2/EIC/AIN0
12 11 10 9 8 7 4 3
R16 4.7k
5%
M4B
2N7002VAC-7
R17 4.7k
5%
M4A
2N7002VAC-7
Vcc_MCU Vcc_MCU
Vcc_MCU
USB_PWR
D
SCL
SDA
DVcc
J3
SDA SCL
1 2 3 4
DVCC SDA SCL
IRQ
5 IRQ GND
C
B
R18 100k
5%
M5B
2N7002VAC-7
Vcc_MCU IRQ
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.
APPROVALS
PCB DES. NC APP ENG. ZP
IC NO.
LTC3337
A
www.analog.com
TITLE: DEMO CIRCUIT SCHEMATIC,
PRIMARY BATTERY SOH MONITOR WITH PRECISION COULOMB COUNTER
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SKU NO.
DC2973A
SIZE: 8.5x11
PCA ASS'Y DWG:
SCALE = NONE 705-DC2973A_REV02
DATE:
04-23-2020
SCHEMATIC NO. AND REVISION:
710-DC2973A_REV02
SHEET 2 OF 2
3
2
1
SCHEMATIC DIAGRAM
DEMO MANUAL DC2973A
DEMO MANUAL DC2973A
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.
12
Rev. 0
06/21
www.analog.com
ANALOG DEVICES, INC. 2021