BQ2050H - TI

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

Part No

BQ2050H
Manufacturer

TI
ChipWorker Part#

CW550508369
RoHS

Lead free / RoHS Compliant
Description

The bq2050H Lithium Ion Power GaugeTM IC is intended for battery pack or in-system installation to maintain an accurate record of available battery capacity
Documentation

Datasheet

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BQ2050H Specifications

Attribute	Attribute Value

Part Number	BQ2050H
Manufacturer	TI
ChipWorker Part#	CW550508369
Documentation	Datasheet
Mounting Style	Surface Mount
Case/Package	SOP-14
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RoHS	RoHS Compliant
Lead-Free Status	Lead Free

Product Description

The bq2050H Lithium Ion Power Gauge™ IC is intended for battery pack or in-system installation to maintain an accurate record of available battery capacity. 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. Compensations for battery temperature, self discharge, and rate of discharge are applied to the charge counter to provide available capacity 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.
Nominal available capacity may be directly indicated using a fivesegment LED display. These segments are used to graphically indicate available capacity. The bq2050H also supports a simple single-line bidirectional serial link to an external processor (common ground). The 5kb HDQ bus interface reduces communications overhead in the external microcontroller.
Internal registers include available capacity, temperature, scaled available energy, battery ID, battery status, and Li-Ion charge FET status. The external processor may also overwrite some of the bq2050H power gauge data registers.
The bq2050H can operate from the batteries in the pack. The REF output and an external transistor allow a simple, inexpensive voltage regulator to supply power to the circuit from the cells.
Accurate measurement of available capacity in Lithium Ion batteries
Provides a low-cost battery management solution for pack integration
Complete circuit can fit in as little as 1/2 square inch of PCB
Low operating current (120µA typical)
Less than 100nA of data retention current
High-speed (5kb) single-wire communication interface (HDQ
bus) for critical battery parameters
Monitors and controls charge FET in Li-Ion pack protection circuit
Direct drive of remaining capacity LEDs
Measurements automatically compensated for rate and temperature
16-pin narrow SOIC

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