BQ2012 - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Popularity Score

44 points

Part No

BQ2012
Manufacturer

TI
ChipWorker Part#

CW355898936
Package

SOIC-16
Description

NiCd/NiMH Gas Gauge With 1-Wire (DQ) Interface, 5 LED Drivers And Slow-Charge Controls
Documentation

Datasheet
Ships from

Moscow
Наличие

713 pcs In Stock
Estimated Price

Price on Request

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BQ2012 Specifications

Consulting Engineer >>

Attribute	Attribute Value

Part Number	BQ2012
Manufacturer	TI
ChipWorker Part#	CW355898936
Documentation	Datasheet
Mounting Style	Surface Mount
Case/Package	SOIC-16
	expand all
Product Lifecycle Status
RoHS	RoHS Compliant
Lead-Free Status	Lead Free

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Product Description

The bq2012 Gas Gauge IC is intended for battery-pack or in-system installation to maintain an accurate record of available battery charge. The IC monitors a 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 bq2012 includes a charge control output that, when used with other full-charge safety termination methods, can provide a cost-effective means of controlling charge based on the batterys charge state.
Nominal available charge may be directly indicated using a five- or six-segment LED display. These segments are used to graphically indicate nominal available charge.
The bq2012 supports a simple single-line bidirectional serial link to an external processor (common ground). The bq2012 outputs battery information in response to external commands over the serial link.
Internal registers include available charge, temperature, capacity, 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 bq2012 gas gauge data registers.
The bq2012 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.
Conservative and repeatable measurement of available charge in rechargeable batteries
Charge control output
Designed for battery pack integration
120µA typical standby current (self-discharge estimation mode)
Small size enables implementations in as little as ½ square inch of PCB
Integrate within a system or as a stand-alone device
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
16-pin narrow SOIC

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