Page 1
Freescale Semiconductor, Inc.
© Freescale Semiconductor, Inc., 2015. All rights reserved.
User’s Guide
Document Number: BATT-14AAAPACKUG
BATT-14AAAPACK
Configurable AAA Battery Pack for KIT33771TPLEVB,
KIT33771SPIEVB, and KIT33772ASP1EVB
Rev. 1.0, 10/2015
Figure 1. BATT-14AAAPACK
Page 2
Contents
1 Important Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Getting Started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Understanding the Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Getting to Know the Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Configuring the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7 Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8 Board Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
9 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
10 Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2 Freescale Semiconductor, Inc.
BATT-14AAAPACKUG Rev. 1.0
Page 3
1 Important Notice
Freescale provides the enclosed product(s) under the following conditions:
This evaluation kit is intended for use of ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY.
It is provided as a sample IC pre-soldered to a printed circuit board to make it easier to access inputs, outputs, and
supply terminals. This evaluation board may be used with any development system or other source of I/O signals
by simply connecting it to the host MCU or computer board via off-the-shelf cables. This evaluation board is not a
Reference Design and is not intended to represent a final design recommendation for any particular a pplication.
Final device in an application will be heavily dep endent on proper printed circuit board layout and heat sinking
design as well as attention to supply filtering, transient suppression, and I/O signal quality.
The goods provided may not be complete in terms of required design, marketing, and or manufacturing related
protective considerations, including product safety measures typically found in the en d product incorporating 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. In order to minimize risks associated with the customers
applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or
procedural hazards. For any safety concerns, contact Freescale sales and technical support services.
Should this evaluation kit not meet the specifications indicated in the kit, it may be returned within 30 days from the
date of delivery and will be replaced by a new kit.
Freescale reserves the right to make changes without further notice to any products herein. Freescale makes no
warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does
Freescale assume any liability arising out of the application or use of any product or circuit, and specifically
disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” p arameters
can and do vary in different applications and actual performance may vary over time. All operating parameters,
including “Typical”, must be validated for each customer application by customer’s technical experts.
Freescale does not convey any license under its patent rights nor the rights of others. Freescale products are not
designed, intended, or authorized for use as components in systems intended for surgical implant into the body , or
other applications intended to support or sustain life, or for any other application in which the failure of the Freescale
product could create a situation where personal injury or death may occur.
Should the Buyer purchase or use Freescale products for any such unintended or unauth orized application, the
Buyer shall indemnify and hold Freescale and its officers, employees, subsidiaries, affiliates, and distributors
harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges Freescale was negligent regarding the design or manufacture of the part. Freescale™ and the
Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property
of their respective owners. © Freescale Semiconductor, Inc. 2015
Important Notice
Freescale Semiconductor, Inc. 3
BATT-14AAAPACKUG Rev. 1.0
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Getting Started
Jump Start Your Design
2 Getting Started
2.1 Kit Contents/Packing List
The BATT-14AAAPACK contents include:
• Assembled and tested battery pack board with housing
• 34-pin ribbon cable
• Warranty card
2.2 Jump Start
Freescale’s analog product development boards help to easily evaluate Freescale products. These tools support analog mixed signal and
power solutions including monolithic ICs using proven high-volume SMARTMOS mixed signal technology , and system-in-package devices
utilizing power, SMARTMOS and MCU dies. Freescale products enable longer battery life, smaller form factor , component count reduction,
ease of design, lower system cost and improved performance in powering state of the art systems.
•Go to www.freescale.com/BATT-14AAAPACK
• Review your Tool Summary Page
• Look for
• Download documents, software and other information
Once the files are downloaded, review the user guide in the bundle. The user guide includes setup instructions, BOM and schematics.
Jump start bundles are available on each tool summary page with the most relevant and current information. The information includes
everything needed for design.
4 Freescale Semiconductor, Inc.
BATT-14AAAPACKUG Rev. 1.0
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Understanding the Battery Pack
+
VBAT
Cell Terminal
Outputs
[CT_1 ... CT_14]
Current Sense
Outputs
ISENSEL /
ISENSEH
GND
Banana
socket
1.3 mm
jack
Banana
socket
Current
sense
Fuse
34-pin Connector
+
+
+
+
14 AAA
Battery
Holders
3 Understanding the Battery Pack
3.1 BATT-14AAAPACK Overview
The BATT-14AAAP ACK is a 3-cell to 14-cell configurable battery pack designed to work in conjunction with evaluation boards such as the
KIT33771TPLEVB, the KIT33771SPIEVB, or the KIT33772ASP1EVB. It offers a compact and easily accessible standard battery platform
that connects directly to the evaluation boards through a 34-pin ribbon cable. The BATT-14AAAPACK thereby eliminates the need for
designing additional hardware to connect with a series of batteries.
The BATT-14AAAPACK includes 14 battery holders (standard AAA format, also known as LR3) connected in series, an optional current
sense resistor, configuration jumpers, and a 1.3mm jack for charging.
3.2 Battery Pack Features
The BATT-14AAAPACK features
• 14 AAA battery holders
• 34-pin header compatible with KIT33771TPLEVB, KIT33771SPIEVB, and KIT33772ASP1EVB
• 1.3mm jack serial charging jack (to be used only with proper serial charger and rechargeable batteries)
• 2mm banana connectors
•0.1 Ω resistor for current measurement
• Current measurement configuration jumper
• MC33771/MC33772 configuration jumper
• Protection fuse
3.3 Block Diagram
Figure 2. BATT-14AAAPACK Block Diagram
Freescale Semiconductor, Inc. 5
BATT-14AAAPACKUG Rev. 1.0
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Getting to Know the Hardware
14 x AAA Battery Holders
Current Sense
Jumper (J7)
Protection
Fuse (F1)
6-cell /14-cell
Selection
Jumper (J4)
34-pin Cells Connector
VBAT -
Banana
Plug
1.3mm
Charger
Jack
VBAT +
Banana
Plug
4 Getting to Know the Hardware
Figure 3 and Figure 4 illustrate components of the BATT-14AAAPA CK.
Figure 3. Top View
Figure 4. Side View
6 Freescale Semiconductor, Inc.
BATT-14AAAPACKUG Rev. 1.0
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Getting to Know the Hardware
4.1 AAA Battery Holders
The battery pack includes 14 AAA battery holders connected in series. Each battery holder connects to the 34-pin connector and emulates
the voltage cells that connect to the MC3377x cell terminals in a real application.
The battery pack accepts any battery lower than 4.4 V that is compatible with the AAA format. For example:
• AAA 1.2 V NiMh batteries
• AAA 1.5 V Alkaline batteries
• 10440 3.7 V Lithium-ion batteries (flat top is preferred)
The bottom silkscreen of the PCB indicates the cell number for each battery holder.
A configuration jumper J4 allows you to route CT6 either to the next battery holder (MC33771 configuration), or to VBAT (MC33772
configuration). Place a jumper connection on J4 for the pack to be functional.
4.2 34-pin Cells Connector
The fourteen cells connect to the EVB through 34-pin header [X1-1...X1-34]:
Table 1. 34-pin Connector Pinout
Pin
Number
X1-1
X1-2
X1-3
X1-4
X1-5
X1-6
X1-7
X1-8
X1-9
X1-10
X1-11
X1-12
X1-13
X1-14
X1-15
X1-16
X1-17
X1-18
X1-19
X1-20
X1-21
X1-22
X1-23
X1-24
X1-25
X1-26
X1-27
X1-28
X1-29
X1-30
X1-31 ISENSE_+ Current measurement output
X1-32 ISENSE_-- Current measurement output
X1-33 CT_REF Cell pin REF output
X1-34 GND Negative_Battery
Connection Description
VBAT MC3377x Power supply
CT_14 Cell pin 14 output
CT_13 Cell pin 13 output
CT_12 Cell pin 12 output
CT_11 Cell pin 11 output
CT_10 Cell pin 10 output
CT_9 Cell pin 9 output
CT_8 Cell pin 8 output
CT_7 Cell pin 7 output
CT_6 Cell pin 6 output
CT_5 Cell pin 5 output
CT_4 Cell pin 4 output
CT_3 Cell pin 3 output
CT_2 Cell pin 2 output
CT_1 Cell pin 1 output
Freescale Semiconductor, Inc. 7
BATT-14AAAPACKUG Rev. 1.0
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Getting to Know the Hardware
4.3 Current Sense Resistor
A 0.1 Ω current sense resistor (R1) on the main board senses current based on the voltage differential between the MC3377x’s ISENSE+
and ISENSE- pins.
A configuration jumper (J7) allows you to select between two options:
• J7-1 and J7-2: senses the current of the LOAD connected between the black and red banana sockets.
• J7-2 and J7-3: senses the current of the MC3377x + the LOAD connected between the black and red banana sockets. This allows
you to measure the MC3377x alone if no load is present.
If a current sense is already present on the EVB, disconnect the battery pack sense resistor, either by unsoldering R1, or unsoldering R2
and R3.
4.4 Protection Fuse
An on-board 2.0 A fast-acting fuse protects the battery stack from overcurrent damage. To find replacement fuses on distributor websites,
search for TE5 250V radial fuses.
4.5 2mm Banana Connectors
MC33771 and MC33772 devices are designed to monitor a full system including a battery pack and its load. Optionally, you can connect
the load to the battery pack using the red (VBAT) and black (GND) 2mm banana connectors.
4.6 1.3mm Serial Charging Jack
The BATT -14AAAP ACK includes 1.3mm jack on the front of the pack to support external charging of the battery stack. However , the battery
pack contains no internal charging circuitry. The pack also contains no overcurrent protection other than the F1 fuse. Therefore, be sure
to select the proper smart charger when serial charging the batteries.
The following websites provide examples of proper serial chargers:
• NiMH Chemistry
www.mascot.no/admin/common/getimg.asp?FileID=1203
www.mascot.no/admin/common/getimg.asp?FileID=1212
• Li-Ion Chemistry
fypoweradapter.manufacturer.globalsources.com/si/6008825690079/pdtl/Standard-battery/1119867844/58V-Battery-Charg
er.htm
Caution:
Do not attempt to charge the battery pack with a charger that is not adapted to the batteries' chemistry
or to the battery cell voltage.
8 Freescale Semiconductor, Inc.
BATT-14AAAPACKUG Rev. 1.0
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Configuring the Hardware
F1
J4 J7
5 Configuring the Hardware
5.1 Basic Configurations
The BATT-14AAAPACK is configured by default for an MC33771 and LOAD current sense.
To use the battery pack with the MC33772, position the jumper J4 between pins 1 and 2. This routes CT6 directly to VBAT.
To measure the MC3377x + LOAD current through the 0.1 ohm sense resistor, position the jumper J7 between pins 2 and 3.
Note:
For the pack to be function, jumpers must be positioned on J4 and J7, and the fuse F1 must be in
place. Otherwise the battery stack is an open circuit.
Figure 5. BATT-14AAAPACK Configurations
Figure 6. BATT-14AAAPACK Connection to KIT33771TPLEVB
Freescale Semiconductor, Inc. 9
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Configuring the Hardware
1
2
3
4
5
6
7
8
9
10
11
12
13 14
5.2 Cell Configuration
The battery pack allows you to configure from three to six cells when used with the MC33772 and from seven to fourteen cells when used
with the MC33771. The exact number of required cells depends on the device version. You may need to place AAA dummy batteries in
some of the battery holders to match the requirements of your device. AAA dummy batteries are available from a number of online
suppliers.
For each configuration, the following table indicates the cells that should contain a dummy battery or a real battery. Figure 7 shows the
location number of each cell (also shown on the bottom of the PCB.)
Table 2. Cell Connections for all Configurations
Number of cells
Device MC33772 MC33771
Jumper J4 Pins 1—2 Pins 2—3
Cell1 Batt Batt Batt Batt Batt Batt Batt Batt Batt Batt Batt Batt
Cell2 Batt Batt Batt Batt Batt Batt Batt Batt Batt Batt Batt Batt
Cell3 Short Short Short Batt Batt Batt Batt Batt Batt Batt Batt Batt
Cell4 Short Short Batt Batt Batt Batt Batt Batt Batt Batt Batt Batt
Cell5 Short Batt Batt Batt Short Short Short Short Short Short Short Batt
Cell6 Batt Batt Batt Batt Short Short Short Short Short Short Batt Batt
Cell7
Cell8 Short Short Short Short Batt Batt Batt Batt
Cell9 Short Short Short Batt Batt Batt Batt Batt
Cell10 Short Short Batt Batt Batt Batt Batt Batt
Cell11 Short Batt Batt Batt Batt Batt Batt Batt
Cell12 Batt Batt Batt Batt Batt Batt Batt Batt
Cell13 Batt Batt Batt Batt Batt Batt Batt Batt
Cell14 Batt Batt Batt Batt Batt Batt Batt Batt
3 4 5 6 7 8 9 10 11 12 13 14
Short Short Short Short Short Batt Batt Batt
Not Configurable
Short Insert a 0 V battery or short the battery holder Batt Insert a real battery
Figure 7. Cell Location Numbers
Figure 8. Twelve-cell Configuration Example
10 Freescale Semiconductor, Inc.
BATT-14AAAPACKUG Rev. 1.0
Page 11
6 Schematic
6 or 14
batteries
Place 1-2 to measure load current only.
Place 2-3 to measure BCC + load current.
Toggle switch for Isense demo:
load battery with 1k resistor
Charger jack.
Use Freescale recommended charger only
CT14
CT10
CT09
CT08
CT07
CT06
CT05
CT04
CT01
SENSE_P
CTREF
CT14
CT13
CT12
CT11
CT10
CT09
CT08
CT07
CT06
CT05
CT04
CT03
CT02
CT01
SENSE_N
CT11
VBAT-
SENSE_N
SENSE_P
CT13
CT12
CT06_J
CT03
CT02
<Core Design><Core Design><Core Design>
BT12
1023
1
2
3
4
BT78
1023
1
2
3
4
R71KRES MF 1K OHM 3W 1% 2512
R2 0
COM
SW3
G3T12AH-R
5
4
6
J4
HDR 1X3
1
2
3
BT34
1023
1 2
3 4
J2
BANANA RED
1
2
R3 0
BT910
1023
1
2
3
4
COM
SW2
G3B15AH-XC-RO
DNP
5
4
6
BT1112
1023
1
2
3
4
R1
0.1
R6 0
J6
PJ-014DH-SMT
1
2
3
F1
3552
1 2
BT14
1021
1
2
J3
BANANA BLACK
1
2
J7
HDR 1X3
1
2
3
BT13
1021
1
2
J1
CON 2x17
123
4
681012141618202224262830
32
34
5
7
9
11
13
15
171921
23
2527293133
BT56
1023
1
2
3
4
Schematic
Freescale Semiconductor, Inc. 11
Figure 9. Battery Pack Board Schematic
BATT-14AAAPACKUG Rev. 1.0
Page 12
Board Layout
7 Board Layout
7.1 Top Assembly Layer and Top Routing
Figure 10. Top Layer Assembly Layer and Top Routing
7.2 Bottom Layer Assembly and Bottom Routing
Figure 11. Bottom Layer Assembly and Bottom Routing
12 Freescale Semiconductor, Inc.
BATT-14AAAPACKUG Rev. 1.0
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8 Board Bill of Materials
Board Bill of Materials
Table 3. Bill of Materials
Item Qty Schematic Label Value Description Part Number
Resistors
1 1 R1 0.1 Ω RES MF 0.1 OHM 1 W 1% 2512 WSLT2512R1000FEA
2 3 R2, R3, R6 0 Ω RES MF ZERO OHM 1/8 W -- 0805 RC0805JR-070RL
31 R7 1 KΩ RES MF 1K OHM 3 W 1% 2512 35221K0FT
Switches, Connectors, Jumpers and Test Points
46
5 2 BT13, BT14 BATT HOLDER 1CELL AAA TH 1021
6 1 F1 FUSE HOLDER SUBMINIATURE TH 3552
71 J1
81 J2
91 J3
10 2 J4,J7
11 1 J6
12 1 SW2 SW SPDT MOM PB RA 28 V 0.1 A SMT G3B15AH-XC-RO (2)
13 1 SW3
Notes
1. Freescale does not assume liability, endorse, or warrant components from external manufacturers are referenced in circuit drawings or tables.
While Freescale offers component recommendations in this configuration, it is the customer’s responsibility to validate their application.
2. Do not populate
(1)
BT12, BT34, BT56, BT78,
BT910, BT1112
BATT HOLDER 2CELL AAA TH 1023
CON 2X17 PLUG SHRD RA TH 100MIL
CTR 343H AU 112L
CON 1 BANANA DIN41649 RED SKT
RA TH -- 228H SN 217L
CON 1 BANANA DIN41649 BLACK
SKT RA TH -- 228H SN 217L
HDR 1X3 TH 2.54MM SP 344H AU
118L
CON 3 PWR RA SMT -- NI 1.3MM CTR
PIN
SW SPDT TOGGLE RA 0.4VA 28 V
SMT
D2534-5002-AR
930224101
930224100
61300311121
PJ-014DH-SMT
G3T12AH-R (2)
Assy
Opt
Freescale Semiconductor, Inc. 13
BATT-14AAAPACKUG Rev. 1.0
Page 14
References
9 References
Following are URLs where you can obtain information on related Freescale products and application solutions:
Freescale.com
Support Pages
BATT-14AAAPACK Tool Summary Page
MC33771 Product Summary Page
MC33772 Product Summary Page www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MC33772
KIT33771ASP1EVB Tool Summary Page
Description URL
www.freescale.com/BATT-14AAAPACK
www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MC33771
www.freescale.com/products/analog-power-management/battery-management/battery-cell-contr
ollers/evaluation-board-mc33771-14-channel-li-ion-battery-cell-controller-ic:KIT33771ASP1EVB
9.1 Support
Visit www.freescale.com/support for a list of phone numbers within your region.
9.2 Warranty
Visit www.freescale.com/warranty to submit a request for tool warranty.
14 Freescale Semiconductor, Inc.
BATT-14AAAPACKUG Rev. 1.0
Page 15
10 Revision History
Revision Date Description of Changes
Revision History
1.0
10/2015 • Initial Release
Freescale Semiconductor, Inc. 15
BATT-14AAAPACKUG Rev. 1.0
Page 16
How to Reach Us:
Home Page:
freescale.com
Web Support:
freescale.com/support
Information in this document is provided solely to enable system an d soft ware implemen ters to use Freescale product s.
There are no express or implied copyright licenses granted hereunder to design or fabricat e any integrated circuits based
on the information in this document.
Freescale reserves the right to make changes without further notice to any products herein. Freescale makes no
warranty, representation, or guarantee regarding the suitability of its products for any particular purpose, nor does
Freescale assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any
and all liability, including without limitation consequential or incident al damages. “Typical” parameters that may be
provided in Freescale data sheets and/or specifications can and do vary i n different app lications, and actual performance
may vary over time. All operating parameters, including “typicals,” must be validated for each customer application by
customer’s technical experts. Freescale does not convey any license under its patent rights nor the rights of others.
Freescale sells products pursuant to stan dard terms and conditions of sale, which can be found at the following address:
freescale.com/SalesTermsandConditions.
Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off.
SMARTMOS is a trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of
their respective owners.
© 2015 Freescale Semiconductor, Inc.
Document Number: BATT-14AAAPACKUG
Rev. 1.0
10/2015
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