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BQ2057CDGK The Texas Instruments BQ2057CDGK is a linear 1-cell Li-ion battery charge controller. It features a maximum charge current of 2A and a battery pack voltage of 4.2V.
Mfr Part #:

BQ2057CDGK

Available from 3 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments BQ2057CDGK is a linear 1-cell Li-ion battery charge controller. It features a maximum charge current of 2A and a battery pack voltage of 4.2V.
✓ Total Stock: 7,454 pcs
$ Price Range: $2.22

BQ2057CDGK Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
5,000 pcs
On Request
5000 pcs On Request 1 On Request On Request On Request On Request On Request
Optech Co.,Limited ✓
Non-Authorised Inventory information
2,434 pcs
On Request
2434 pcs On Request 1 On Request On Request 06+ On Request On Request
Speed Components Ltd ✓
Non-Authorised Inventory information
20 pcs
On Request
20 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

BQ2057CDGK Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Battery Chemistry
Battery Pack Voltage
Control Interface
Current
Industrial Grade
Medical Grade
Military Grade
Mounting Type
Number of Cells
Operating Temperature
Programmable Features
Supplier Device Package
Voltage
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BQ2057CDGK Description

Short technical summary and product information.

The BQ2057CDGK from Texas Instruments is a linear battery charge controller designed for single-cell Li-ion and Li-Polymer battery packs. It supports a battery pack voltage of 4.2V and can deliver a maximum charge current of 2A.

 

This IC operates with an input voltage range from 4.5V to 15V, with an absolute maximum rating of 18V. It features a low dropout voltage of 0.3V, minimizing heat dissipation. The control interface is standalone and RC-settable, offering flexibility in system design. The operating temperature range is -20°C to 70°C.

 

Key features include AutoComp dynamic compensation for battery pack impedance, optional cell-temperature monitoring, and integrated voltage and current regulation. It also provides charge status output and an automatic battery-recharge feature. The BQ2057CDGK is available in an 8-VSSOP package, as well as 8-TSSOP and 8-MSOP options.

 

Ideal for applications requiring efficient charging of single-cell lithium-ion batteries, this component requires a small number of external components for operation. Its design considerations include precise voltage regulation accuracy better than ±1% with preset voltages.

BQ2057CDGK Quick Information

Product Type: Battery Charger IC
Canonical Name: BQ2057CDGK 1-Cell Li-Ion Battery Charge Controller
Subcategory: Linear Battery Chargers

BQ2057CDGK Compliance

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

BQ2057CDGK Estimated Pricing

Qty Low High
1+ $2.22 $2.22

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

BQ2057CDGK Features

  • Linear 1-cell Li-ion battery charge controller.
  • Maximum charge current of 2A.
  • Supports 4.2V battery pack voltage.
  • Wide input voltage range 4.5V to 15V.
  • Available in 8-VSSOP package.

BQ2057CDGK Applications

  • Ideal for single-cell Li-ion packs.
  • Suitable for portable electronic devices.
  • Used in battery management systems.
  • Enables efficient battery charging.

BQ2057CDGK FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range?

4.5V to 15V (absolute maximum 18V).

What package is the BQ2057CDGK available in?

8-VSSOP, 8-TSSOP, 8-MSOP (surface mount).

What is the operating temperature range?

-20°C to 70°C.

What is the maximum charge current?

2A.

What battery chemistries does the BQ2057CDGK support?

Lithium Ion (Li-Ion) and Lithium Polymer (Li-Pol).

How is the charge current programmed?

Using an external RC network (RC-settable control interface).

What is the voltage regulation accuracy?

Better than ±1%.

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