16-pin (D) package image

BQ2014SN-D120TR ACTIVE

NiCd/NiMH gas gauge W/1-wire (DQ) I/F, 5 LED drivers, Control Signals for BQ2004 Fast-charge IC

ACTIVE custom-reels CUSTOM Custom reel may be available
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Quality information

Rating Catalog
RoHS Yes
REACH Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Quality, reliability
& packaging information

Information included:

  • RoHS
  • REACH
  • Device marking
  • Lead finish / Ball material
  • MSL rating / Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Additional manufacturing information

Information included:

  • Fab location
  • Assembly location
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Export classification

*For reference only

  • US ECCN: EAR99

Packaging information

Package | Pins SOIC (D) | 16
Operating temperature range (°C) 0 to 70
Package qty | Carrier 2,500 | LARGE T&R

Features for the BQ2014

  • Conservative and repeatable measurement of available charge in rechargeable batteries
  • Charge control output operates an external charge controller such as the bq2004 Fast Charge IC
  • Designed for battery pack integration
    • 120µA typical standby current
  • Display capacity via single-wire serial communication port or direct drive of LEDs
  • Measurements compensated for current and temperature
  • Self-discharge compensation using internal temperature sensor
  • User-selectable end-of-discharge threshold
  • Battery voltage, nominal available charge, temperature, etc. available over serial port
  • 16-pin narrow SOIC

Description for the BQ2014

The bq2014 Gas Gauge IC is intended for battery-pack or in-system installation to maintain an accurate record of available battery charge. The IC monitors the voltage drop across a sense resistor connected in series between the negative battery terminal and ground to determine charge and discharge activity of the battery.

Self-discharge of NiMH and NiCd batteries is estimated based on an internal timer and temperature sensor. Compensations for battery temperature and rate of charge or discharge are applied to the charge, discharge, and self-discharge calculations to provide available charge information across a wide range of operating conditions. Battery capacity is automatically recalibrated, or "learned," in the course of a discharge cycle from full to empty.

The bq2014 includes a charge control output that controls an external Fast Charge IC such as the bq2004.

Nominal Available Charge (NAC) may be directly indicated using a five-segment LED display.

The bq2014 supports a simple single-line bidirectional serial link to an external processor (with a common ground). The bq2014 outputs battery information in response to external commands over the serial link.

Internal registers include available charge, temperature, capacity, battery voltage, battery ID, battery status, and programming pin settings. To support subassembly testing, the outputs may also be controlled. The external processor may also overwrite some of the bq2014 gas gauge data registers.

The bq2014 may operate directly from three or four cells. With the REF output and an external transistor, a simple, inexpensive regulator can be built to provide VCC across a greater number of cells.

Pricing

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Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

A custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships tube or tray devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

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