IC CONTROLLER FASTCHRGE 8-SOIC

BQ2002ESN

Manufacturer Part NumberBQ2002ESN
DescriptionIC CONTROLLER FASTCHRGE 8-SOIC
ManufacturerTexas Instruments
BQ2002ESN datasheet
 


Specifications of BQ2002ESN

FunctionCharge ManagementBattery TypeNickel Cadmium (NiCd), Nickel Metal-Hydride (NiMH)
Voltage - Supply4 V ~ 6 VOperating Temperature0°C ~ 70°C
Mounting TypeSurface MountPackage / Case8-SOIC (0.154", 3.90mm Width)
Operating Supply Voltage5 VMaximum Operating Temperature+ 70 C
Minimum Operating Temperature0 CMounting StyleSMD/SMT
Operating Supply Voltage (min)4VOperating Supply Voltage (typ)5V
Operating Supply Voltage (max)6VOperating Temp Range0C to 70C
Package TypeSOICMountingSurface Mount
Pin Count8Operating Temperature ClassificationCommercial
For Use With296-9488 - EVAL MOD FOR BQ2002Lead Free Status / RoHS StatusLead free / RoHS Compliant
Other names296-9321-5  
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NiCd/NiMH Fast-Charge Management ICs
Features
Fast charge of nickel cadmium
or nickel-metal hydride batter-
ies
Direct LED output displays
charge status
Fast-charge termination by - V,
maximum voltage, maximum
temperature, and maximum
time
Internal band-gap voltage ref-
erence
Optional top-off charge
Selectable pulse trickle charge
rates
Low-power mode
8-pin 300-mil DIP or 150-mil
SOIC
Pin Connections
TM
1
8
CC
LED
2
7
INH
BAT
3
6
V CC
V SS
TS
4
5
8-Pin DIP or
Narrow SOIC
PN-200201.eps
bq2002E/G Selection Guide
Part No.
LBAT
TCO
HTF
bq2002E 0.175
0.5
0.6
V
V
V
CC
CC
CC
bq2002G 0.175
0.5
0.6
V
V
V
CC
CC
CC
SLUS132 - FEBRUARY 1999
General Description
The bq2002E and bq2002G Fast-
Charge ICs are low-cost CMOS bat-
tery-charge controllers providing reli-
able charge termination for both NiCd
and NiMH battery applications. Con-
trolling a current-limited or con-
stant-current supply allows t h e
bq2002E/G to be the basis for a cost-
effective stand-alone or system-inte-
grated charger. The bq2002E/G inte-
grates fast charge with optional top-off
and pulsed- trickle control in a single
IC for charging one or more NiCd or
NiMH battery cells.
Fast charge is initiated on application
of the charging supply or battery re-
placement. For safety, fast charge is
inhibited if the battery temperature
and voltage are outside configured
limits.
Pin Names
TM
Timer mode select input
LED
Charging status output
BAT
Battery voltage input
V
System ground
SS
LTF
- V PVD
Fast Charge
None
C/2
1C
2C
None
C/2
1C
2C
1
bq2002E/G
Fast charge is terminated by any of
the following:
Peak voltage detection (PVD)
n
Negative delta voltage (- V)
n
Maximum voltage
n
Maximum temperature
n
Maximum time
n
After fast charge, the bq2002E/G op-
tionally tops-off and pulse-trickles the
battery per the pre-configured limits.
Fast charge may be inhibited using
the INH pin.
The bq2002E/G may
also be placed in low-standby-power
mode to reduce system power con-
sumption.
T h e bq2002E differs from t h e
bq2002G only in that a slightly dif-
ferent set of fast-charge and top-off
time limits is available. All differ-
ences between the two ICs are illus-
trated in Table 1.
TS
Temperature sense input
V
Supply voltage input
CC
INH
Charge inhibit input
CC
Charge control output
t
Top-Off
Maintenance
MTO
200
None
C/32
80
C/16
C/32
40
None
C/32
160
None
C/32
80
C/16
C/32
40
None
C/32

BQ2002ESN Summary of contents

  • Page 1

    NiCd/NiMH Fast-Charge Management ICs Features Fast charge of nickel cadmium or nickel-metal hydride batter- ies Direct LED output displays charge status Fast-charge termination maximum voltage, maximum temperature, and maximum time Internal band-gap voltage ref- erence Optional top-off ...

  • Page 2

    Pin Descriptions TM Timer mode input A three-level input that controls the settings for the fast charge safety timer, voltage ter- mination mode, top-off, pulse-trickle, and voltage hold-off time. LED Charging output status Open-drain output that indicates the charging ...

  • Page 3

    Chip on Battery Voltage V CC 4.0V too High? V BAT < 2V Battery Voltage too Low? 0.175 V CC < V BAT V TS > 0 Battery Temperature? (PVD Maximum Time Out) Fast ...

  • Page 4

    Fast Charging CC Output Charge initiated by application of power LED A ground-referenced negative temperature coefficient ther- mistor placed near the battery may be used as a low-cost temperature-to-voltage transducer. The temperature sense voltage input ...

  • Page 5

    V = 0.175 V 20% LBAT CC The valid temperature range is V > 0.6 V 5%. HTF CC If the battery voltage or temperature is outside of these limits, the IC pulse-trickle charges until the ...

  • Page 6

    Table 1 de- scribes the states selected by the TM pin. The mid- level selection input is developed by a resistor di- vider between V and ground that fixes the voltage CC on ...

  • Page 7

    Absolute Maximum Ratings Symbol Parameter V V relative voltage applied on any pin T excluding V relative Operating ambient temperature OPR T Storage temperature STG T Soldering temperature SOLDER ...

  • Page 8

    Recommended DC Operating Conditions Symbol Condition V Supply voltage PVD detect voltage DET V Battery input BAT V Thermistor input TS V Logic input high IH Logic input high V Logic input mid IM ...

  • Page 9

    Impedance Symbol Parameter R Battery input impedance BAT R TS input impedance TS Timing ( +70° 10%) Symbol Parameter d Time base variation FCV t Start-up delay DLY Note: Typical ...

  • Page 10

    DIP ( 8-Pin SOIC Narrow (SN) 8-Pin PN ( 0.300" DIP ) Dimension ...

  • Page 11

    ... PACKAGING INFORMATION (1) Orderable Device Status BQ2002EPN ACTIVE BQ2002EPNE4 ACTIVE BQ2002ESN ACTIVE BQ2002ESNG4 ACTIVE BQ2002ESNTR ACTIVE BQ2002ESNTRG4 ACTIVE BQ2002GPN ACTIVE BQ2002GPNE4 ACTIVE BQ2002GSN ACTIVE BQ2002GSNG4 ACTIVE BQ2002GSNTR ACTIVE BQ2002GSNTRG4 ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. ...

  • Page 12

    In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold Customer on an annual basis. PACKAGE OPTION ADDENDUM Addendum-Page 2 ...

  • Page 13

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing BQ2002ESNTR SOIC D BQ2002GSNTR SOIC D PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 (mm) Diameter Width (mm) W1 (mm) 8 2500 330.0 12.4 6.4 8 2500 330.0 12.4 6.4 Pack Materials-Page 1 19-Mar-2008 ...

  • Page 14

    ... Device Package Type BQ2002ESNTR SOIC BQ2002GSNTR SOIC PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm 2500 D 8 2500 Pack Materials-Page 2 19-Mar-2008 Width (mm) Height (mm) 340.5 338.1 20.6 340.5 338.1 20.6 ...

  • Page 15

    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...