Product details

Number of series cells 1, 2, 3, 4 Charge current (max) (A) 2 Vin (max) (V) 5.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 20 Absolute max Vin (max) (V) 7 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (JEITA profile) Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) 0 to 70
Number of series cells 1, 2, 3, 4 Charge current (max) (A) 2 Vin (max) (V) 5.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 20 Absolute max Vin (max) (V) 7 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (JEITA profile) Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) 0 to 70
PDIP (N) 16 181.42 mm² 19.3 x 9.4 SOIC (D) 16 59.4 mm² 9.9 x 6
  • Safe charge of Li-Ion battery packs
  • Pulse-width modulation control for current and voltage regulation
  • Programmable high-side/low-side current-sense
  • Fast charge terminated by selectable minimum current; safety backup termination at maximum time
  • Precharge qualification detects shorted or damaged cells and conditions battery
  • Charging continuously qualified by temperature and voltage limits
  • Direct LED control outputs to display charge status and fault conditions
  • Safe charge of Li-Ion battery packs
  • Pulse-width modulation control for current and voltage regulation
  • Programmable high-side/low-side current-sense
  • Fast charge terminated by selectable minimum current; safety backup termination at maximum time
  • Precharge qualification detects shorted or damaged cells and conditions battery
  • Charging continuously qualified by temperature and voltage limits
  • Direct LED control outputs to display charge status and fault conditions

The bq2954 Li-Ion Charge-Management IC uses a flexible pulse-width modulation regulator to control voltage and current during charging. The regulator frequency is set by an external capacitor for design flexibility. The switch-mode design minimizes power dissipation.

For safety, the bq2954 inhibits fast charging until the battery voltage and temperature are within configured limits. If the battery voltage is less than the low-voltage threshold, the bq2954 provides low-current conditioning of the battery.

For charge qualification, the bq2954 uses an external thermistor to measure battery temperature. Charging begins when power is applied or the battery is inserted

The bq2954 charges a battery in two phases. First a constant-current phase replenishes approximately 70% of battery capacity. Then a voltage- regulation phase completes the battery charge.

The bq2954 provides status indications of all charger states and faults for accurate determination of the battery and charge-system conditions.

The bq2954 Li-Ion Charge-Management IC uses a flexible pulse-width modulation regulator to control voltage and current during charging. The regulator frequency is set by an external capacitor for design flexibility. The switch-mode design minimizes power dissipation.

For safety, the bq2954 inhibits fast charging until the battery voltage and temperature are within configured limits. If the battery voltage is less than the low-voltage threshold, the bq2954 provides low-current conditioning of the battery.

For charge qualification, the bq2954 uses an external thermistor to measure battery temperature. Charging begins when power is applied or the battery is inserted

The bq2954 charges a battery in two phases. First a constant-current phase replenishes approximately 70% of battery capacity. Then a voltage- regulation phase completes the battery charge.

The bq2954 provides status indications of all charger states and faults for accurate determination of the battery and charge-system conditions.

Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Data sheet Lithium Ion Charge Management IC with Integrated Switching Controller datasheet 05 Sep 1999

Design & development

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

Package Pins CAD symbols, footprints & 3D models
PDIP (N) 16 Ultra Librarian
SOIC (D) 16 Ultra Librarian

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

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. ​​​​​​​​​​​​​​

Videos