Mfr Part #:

BQ2057CDGKR

The BQ2057CDGKR is a linear charge controller IC from Texas Instruments designed for single-cell Lithium-Ion and Lithium-Polymer batteries. It offers features like AutoComp dynamic impedance compensation and programmable current.

✓ Total Stock: 150,786 pcs

$ Price Range: $1.85

BQ2057CDGKR Available from 5 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Romaks Technologies ✓ Non-Authorised Inventory information	120,533 pcs On Request	120533 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Optech Co.,Limited ✓ Non-Authorised Inventory information	24,022 pcs On Request	24022 pcs	On Request	1	On Request	On Request	13+	On Request	On Request
Xingangxin ✓ Non-Authorised Inventory information	5,415 pcs On Request	5415 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Husky International Electronic ✓ Non-Authorised Inventory information	557 pcs On Request	557 pcs	On Request	1	On Request	On Request	N/A	On Request	On Request
Smaxon Electronics ✓ Non-Authorised Inventory information	259 pcs On Request	259 pcs	On Request	1	On Request	On Request	14+	On Request	On Request

BQ2057CDGKR Description

Short technical summary and product information.

The Texas Instruments BQ2057CDGKR is an advanced linear charge-management IC for single-cell Lithium-Ion and Lithium-Polymer battery packs. It is designed for cost-sensitive and compact portable electronics.

Key electrical specifications include a 1-cell configuration, support for Lithium Ion/Polymer chemistry, a battery pack voltage of 4.2V, and programmable current control. The device operates within a temperature range of -20°C to 70°C and features a low 0.3-V dropout voltage for efficient operation.

This IC incorporates AutoComp dynamic compensation to adjust for battery pack impedance, reducing charge time. It also includes optional cell-temperature monitoring, integrated voltage and current regulation, cell conditioning for deeply discharged cells, and automatic recharge and termination features. The charge status is indicated via an output suitable for single or dual LEDs or a host processor interface.

Packaged in an 8-VSSOP surface-mount configuration, the BQ2057CDGKR requires a small number of external components, making it suitable for space-constrained designs. It operates with a 15V supply voltage.

BQ2057CDGKR Quick Information

Product Type: Battery Charger IC

Series: BQ2057

Canonical Name: BQ2057CDGKR Linear 1-Cell Li-ion Battery Charge Controller

Subcategory: Battery Charger ICs

BQ2057CDGKR Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

BQ2057CDGKR Estimated Pricing

Qty	Low	High
1+	$1.85	$1.85

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

BQ2057CDGKR Features

Linear 1-cell Li-ion/Polymer charge controller.
AutoComp dynamic impedance compensation.
Programmable charge current.
Low 0.3V dropout voltage.
Surface mount 8-VSSOP package.

BQ2057CDGKR Applications

Ideal for single-cell battery packs.
Suitable for compact portable electronics.
Enables efficient battery charging.
Supports Li-ion and Li-Polymer chemistries.

BQ2057CDGKR FAQs

7 frequently asked questions generated from this part’s specifications.

What is the operating temperature range for the BQ2057CDGKR?

The operating temperature range is -20°C to 70°C.

What package type is the BQ2057CDGKR available in?

The BQ2057CDGKR is available in an 8-VSSOP package and also an 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) package.

What battery chemistries does the BQ2057CDGKR support?

It supports Lithium Ion and Lithium Polymer battery chemistries.

What is the battery pack voltage for the BQ2057CDGKR?

The battery pack voltage is 4.2V.

Does the BQ2057CDGKR have programmable features?

Yes, it has programmable current features.

What is the dropout voltage of the BQ2057CDGKR?

The dropout voltage is 0.3V.

What is the voltage regulation accuracy of the BQ2057CDGKR?

The voltage regulation accuracy is better than ±1% with preset voltages.

Category	Battery Chargers
Manufacturer Name	Texas Instruments
Battery Chemistry	Lithium Ion/Polymer
Battery Pack Voltage	4.2V
Current	Programmable
Features	AutoCompM dynamic compensation of battery pack’s internal impedance to reduce charge time; Optional cell-temperature monitoring before and during charge; Integrated voltage and current regulation with programmable charge-current and high- or low-side current sensing; Integrated cell conditioning for reviving deeply discharged cells and minimizing heat dissipation during initial stage of charge; Charge status output for single or dual led or host processor interface; Automatic battery-recharge feature; Charge termination by minimum current; Automatic low-power sleep mode when V CC is removed; 0.3-V dropout voltage for minimizing heat dissipation; Better than ±1% voltage regulation accuracy with preset voltages
Mounting Type	Surface Mount
Number of Cells	1
Operating Temperature	-20°C ~ 70°C
Programmable Features	Current
SVHC Present	Not Present
Supplier Device Package	DGK
Tape & Reel	Yes
Voltage	15V