IC CONTROLLER FASTCHRGE 16-SOIC

 

BQ2003STR

Manufacturer Part NumberBQ2003STR
DescriptionIC CONTROLLER FASTCHRGE 16-SOIC
ManufacturerTexas Instruments
BQ2003STR datasheets

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Specifications of BQ2003STR

FunctionCharge ManagementBattery TypeNickel Cadmium (NiCd), Nickel Metal-Hydride (NiMH)
Voltage - Supply4.5 V ~ 5.5 VOperating Temperature0°C ~ 70°C
Mounting TypeSurface MountPackage / Case16-SOIC (0.300", 7.50mm Width)
Operating Supply Voltage (min)4.5VOperating Supply Voltage (typ)5V
Operating Supply Voltage (max)5.5VOperating Temp Range0C to 70C
Package TypeSOICMountingSurface Mount
Pin Count16Operating Temperature ClassificationCommercial
Operating Supply Voltage5 VMaximum Operating Temperature+ 70 C
Minimum Operating Temperature0 CMounting StyleSMD/SMT
For Use With296-9492 - EVAL MOD FOR BQ2003 NICD/NIMH296-9490 - EVAL MOD FOR BQ2003 NICD/NIMH296-9491 - EVAL MOD FOR BQ2003 NICD/NIMHLead Free Status / RoHS StatusLead free / RoHS Compliant
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Features
➤
Fast charge and conditioning of
nickel cadmium or nickel-metal
hydride batteries
➤
Hysteretic PWM switch-mode
current regulation or gated con-
trol of an external regulator
➤
Easily integrated into systems
or used as a stand-alone charger
➤
Pre-charge qualification of tem-
perature and voltage
➤
Direct LED outputs display
battery and charge status
➤
Fast-charge termination by
∆ temperature/∆ time, -∆V, maxi-
mum voltage, maximum tem-
perature, and maximum time
➤
Optional top-off charge
Pin Connections
CCMD
1
16
V CC
DCMD
2
15
DIS
DVEN
3
14
MOD
TM 1
4
13
CHG
TM 2
5
12
TEMP
TS
6
11
MCV
BAT
7
10
TCO
V SS
8
9
SNS
16-Pin DIP or SOIC
PN200301.eps
SLUS095A - OCTOBER 1999 I
General Description
The bq2003 Fast Charge IC provides
comprehensive fast charge control
functions together with high-speed
switching power control circuitry on a
monolithic CMOS device.
Integration of closed-loop current
control circuitry allows the bq2003
to be the basis of a cost-effective so-
lution for stand-alone and system-
integrated chargers for batteries of
one or more cells.
Switch-activated discharge-before-
charge allows bq2003-based chargers
to support battery conditioning and
capacity determination.
High-efficiency power conversion is
accomplished using the bq2003 as a
hysteretic PWM controller for
switch-mode regulation of the charg-
ing current. The bq2003 may alterna-
tively be used to gate an externally
regulated charging current.
Pin Names
CCMD
Charge command/select
DCMD
Discharge command
DVEN
-∆V enable/disable
TM
Timer mode select 1
1
TM
Timer mode select 2
2
TS
Temperature sense
BAT
Battery voltage
V
System ground
SS
1
bq2003
Fast-Charge IC
Fast charge may begin on applica-
tion of the charging supply, replace-
ment of the battery, or switch de-
pression. For safety, fast charge is
inhibited unless/until the battery
temperature and voltage are within
configured limits.
Temperature, voltage, and time are
monitored throughout fast charge.
Fast charge is terminated by any of
the following:
Rate of temperature rise
n
(∆T/∆t)
Negative delta voltage (-∆V)
n
Maximum voltage
n
Maximum temperature
n
Maximum time
n
After fast charge, an optional top-off
phase is available. Constant-cur-
rent maintenence charge is provided
by an external trickle resistor.
SNS
Sense resistor input
TCO
Temperature cutoff
MCV
Maximum voltage
TEMP
Temperature status
output
CHG
Charging status output
MOD
Charge current control
DIS
Discharge control
5.0V ± 10% power
V
CC

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BQ2003STR Summary of contents

  • Page 1

    Features ➤ Fast charge and conditioning of nickel cadmium or nickel-metal hydride batteries ➤ Hysteretic PWM switch-mode current regulation or gated con- trol of an external regulator ➤ Easily integrated into systems or used as a stand-alone charger ➤ Pre-charge ...

  • Page 2

    Pin Descriptions Charge initiation and discharge-before- CCMD, charge control inputs DCMD These two inputs control the conditions that beg cle discharge-before-charge. See Table ...

  • Page 3

    Functional Description Figure 3 shows a state diagram and Figure 4 shows a block diagram of the bq2003. Battery Voltage and Temperature Measurements Battery voltage and temperature are monitored for maximum allowable values. The voltage presented on the battery sense ...

  • Page 4

    Discharge-Before-Charge The DCMD input is used to command discharge-before- charge via the DIS output. Once activated, DIS becomes active (high) until V falls below V CELL DIS goes low and a new fast charge cycle begins. See Table 1 ...

  • Page 5

    Table 2. Fast-Charge Safety Time/Hold-Off/Top-Off Table Corresponding Fast-Charge Rate TM1 C/4 Low C/2 Float 1C High 2C Low 4C Float C/2 High 1C Low 2C Float 4C High Note: Typical conditions = 25°C, V the allowed limits. If the voltage ...

  • Page 6

    If the IC is configured for ∆T/∆t termination, this may ...

  • Page 7

    New Charge Cycle Start or Discharge-Before-Charge Command V CELL Battery Voltage? V CELL < V EDF V EDV < V CELL < V MCV V TEMP > V LTF or V TEMP < V HTF Battery Temperature? V HTF < ...

  • Page 8

    OSC TEMP Display Control CHG CCMD Charge Control DCMD State Machine DVEN Discharge Control DIS TM1 TM2 TCO Timing TCO Control Check LTF Check SNS A/D V BAT - V SNS EDV Check MOD MCV ...

  • Page 9

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

  • Page 10

    Recommended DC Operating Conditions Symbol Parameter V Supply voltage CC V Battery input BAT V BAT voltage potential CELL V Thermistor input voltage potential TEMP V Maximum cell voltage MCV V Temperature cutoff TCO Logic input ...

  • Page 11

    Impedance Symbol Parameter R Battery input impedance BAT R MCV input impedance MCV R TCO input impedance TCO R SNS input impedance SNS R TS input impedance TS Timing ( +70° ± 10%) Symbol ...

  • Page 12

    PN: 16-Pin DIP Narrow S: 16-Pin SOIC 16-Pin PN ( DIP Narrow ) All dimensions are in inches. 16-Pin S ( SOIC ) All dimensions are in inches. .004 12 ...

  • Page 13

    Data Sheet Revision History Change No. Page No Changed block diagram 5 8 Added top-off values to Table 2. 6 All Revised and expanded format of this data sheet OPR 8 3 Corrected Table ...

  • Page 14

    ... BQ2003S-NTRG4 ACTIVE BQ2003SG4 ACTIVE BQ2003STR ACTIVE BQ2003STRG4 ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design ...

  • Page 15

    Customer on an annual basis. PACKAGE OPTION ADDENDUM Addendum-Page 2 7-Sep-2009 ...

  • Page 16

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing BQ2003S-NTR SOIC DW BQ2003STR SOIC DW PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 16 2000 330.0 16.4 10.75 16 2000 330.0 16.4 10.75 Pack Materials-Page 1 16-Oct-2010 B0 K0 ...

  • Page 17

    ... Device Package Type BQ2003S-NTR SOIC BQ2003STR SOIC PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm 2000 DW 16 2000 Pack Materials-Page 2 16-Oct-2010 Width (mm) Height (mm) 346.0 346.0 33.0 346.0 346.0 33.0 ...

  • Page 18

    ... 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’ ...

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