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BQ2018 The Texas Instruments BQ2018 is a low-cost charge/discharge counter IC for rechargeable batteries. It provides state-of-charge information using a single-wire HDQ interface.
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BQ2018

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Mfr Name: BQ
BQ
The Texas Instruments BQ2018 is a low-cost charge/discharge counter IC for rechargeable batteries. It provides state-of-charge information using a single-wire HDQ interface.
✓ Total Stock: 169 pcs
$ Price Range: $0.75

BQ2018 Available from 1 distributor

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✓ Non-Authorised
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PROSOFT ELECTRONICS ✓
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169 pcs
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169 pcs On Request 1 On Request On Request 0014G/ On Request On Request
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BQ2018 Specifications Quick View

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BQ2018 Description

Short technical summary and product information.

The BQ2018 from Texas Instruments is a versatile charge/discharge counter designed for battery management applications. It supports multiple cell chemistries including Lead Acid, Li-Ion/Li-Polymer, NiCd, and NiMH, and is suitable for single-series cell configurations.

 

This IC features a high-speed 1-wire HDQ communication interface for easy integration with host controllers. It offers a wide battery capacity range from 1000 mAh to 4500 mAh and includes a Coulomb Counter for accurate charge and discharge tracking. The operating temperature range is -20°C to 70°C.

 

Available in 8-pin TSSOP or SOIC packages, the BQ2018 is designed for direct battery pack integration. It operates with low current consumption, featuring an operating mode draw of less than 80uA and a sleep mode draw of less than 10uA. The device also includes internal features like offset calibration for improved accuracy and an internal temperature sensor for self-discharge estimation.

 

Note: This product is in the process of being discontinued. New designs should consider alternate products such as the BQ27Z561-R2 or BQ27Z746.

BQ2018 Quick Information

Product Type: Battery Management IC
Canonical Name: BQ2018 Multi-chemistry charge/discharge counter
Subcategory: Charge/Discharge Counter

BQ2018 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BQ2018 Estimated Pricing

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1+ $0.75 $0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

BQ2018 Features

  • Multi-chemistry charge/discharge counter.
  • High-speed 1-wire HDQ interface.
  • Supports 1-series cell configurations.
  • Coulomb Counter for accurate tracking.
  • Low operating and sleep current consumption.

BQ2018 Applications

  • Battery fuel gauging.
  • State-of-charge monitoring.
  • Rechargeable battery packs.
  • Portable electronic devices.

BQ2018 FAQs

6 frequently asked questions generated from this part’s specifications.
What cell chemistries does the BQ2018 support?

The BQ2018 supports Lead Acid, Li-Ion/Li-Polymer, NiCd, and NiMH cell chemistries.

How many series cells can the BQ2018 manage?

The BQ2018 is designed for single-series cell configurations.

What is the communication interface for the BQ2018?

The BQ2018 uses a high-speed 1-wire HDQ communication interface.

What is the operating temperature range of the BQ2018?

The BQ2018 operates within a temperature range of -20°C to 70°C.

What are the typical operating and sleep currents for the BQ2018?

The BQ2018 has an operating current of less than 80uA and a sleep current of less than 10uA.

What package options are available for the BQ2018?

The BQ2018 is available in 8-pin TSSOP (PW) and 8-pin SOIC (D) packages.

BQ2018 Alternate Parts

Same form/fit/function or matching attribute configuration across different manufacturers.
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BQ2018
BQ2018
Texas Instruments
The Texas Instruments BQ2018 is a low-cost charge/discharge counter IC for rechargeable batteries. It provides state-of-charge information using a high-speed 1-wire HDQ interface.
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