Top

Product details

Parameters

Number of series cells 1, 2, 3, 4 Charge current (Max) (A) 2 Operating Vin (Max) (V) 6 Cell chemistry NiCd, NiMH Battery charge voltage (Min) (V) 0 Battery charge voltage (Max) (V) 6 Absolute Vin (safety rating) (Max) ((V)) 7 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile) Operating Vin (Min) (V) 4 Rating Catalog open-in-new Find other Battery charger ICs

Package | Pins | Size

PDIP (P) 8 93 mm² 9.81 x 9.43 SOIC (D) 8 19 mm² 3.91 x 4.9 open-in-new Find other Battery charger ICs

Features

  • Fast charge of nickel cadmium or nickel-metal hydride batteries
  • Direct LED output displays charge status
  • Fast-charge termination by rate of rise of temperature, maximum voltage, maximum
    temperature, and maximum time
  • Internal band-gap voltage reference
  • Optional top-off charge (bq2002T only)
  • Selectable pulse-trickle charge rates (bq2002T only)
  • Low-power mode
  • 8-pin 300-mil DIP or 150-mil SOIC
open-in-new Find other Battery charger ICs

Description

The bq2002D/T Fast-Charge IC are low-cost CMOS battery-charge controllers able to provide reliable charge termination for both NiCd and NiMH battery applications. Controlling a current-limited or constant-current supply allows the bq2002D/T to be the basis for a cost-effective stand-alone or system-integrated charger. The bq2002D/T integrates 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 replacement. For safety, fast charge is inhibited if the battery temperature and voltage are outside configured limits.

Fast charge is terminated by any of the following:

  • Rate of temperature rise
  • Maximum voltage
  • Maximum temperature
  • Maximum time

After fast charge, the bq2002T optionally tops-off and pulse-trickles the battery per the pre-configured limits. Fast charge may be inhibited using the INH pin. The bq2002D/T may be placed in low-standby-power mode to reduce system power consumption.

open-in-new Find other Battery charger ICs
Download

Technical documentation

= Featured
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet NiCD/NiMH Fast-Charge Management ICs datasheet (Rev. D) Apr. 20, 2009
Technical articles When to use rechargeable batteries in small battery applications Oct. 01, 2019
Technical articles Should I use a linear charger or a switching charger? Oct. 30, 2015
Technical articles Summertime and the livin' is easy Jun. 20, 2014
User guides DV2002L2/TL2 Fast Charge Development System Control of LM317 Linear Regulator (Rev. B) Nov. 24, 2010
User guides bq2002 Selection Table Aug. 30, 2005

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Software development

SUPPORT SOFTWARE Download
Temp Sense Designer Software
TEMPSENSE-SW The TempSense Designer software allows the user to easily design temperature sensing circuits for many of the Texas Instruments battery charger devices. A full listing of the supported devices is included under the "Support" menu in the program. The user can use the thermisters included in the (...)
Features

The program gives the user:

  • Worse-case limits of the resistance
  • Trip voltages
  • Temperatures of the design

CAD/CAE symbols

Package Pins Download
PDIP (P) 8 View options
SOIC (D) 8 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​