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Texas Instruments BQ25619ERTWR — Power Management (PMIC / Gate Driver)

BQ25619ERTWR - Texas Instruments 1-Cell Li-Ion Battery

MPNBQ25619ERTWR
Active

Texas Instruments BQ25619ERTWR, a single-cell Li-Ion/Polymer battery charger IC with I²C interface, 1.8A max charge current, 4.52V battery pack voltage, in a 24-WFQFN Exposed Pad package.

$3.0600Ref. price · indicative, final on quote
Texas Instruments BQ25619ERTWR datasheet (PDF)
Packaging24-WFQFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ25619ERTWR specifications
ParameterValue
MountingSurface Mount
Battery pack voltage4.52V
Supply voltage13.5V
Current - chargingConstant - Programmable
Charge current - max1.8A
InterfaceI²C
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case24-WFQFN Exposed Pad
Number of cells1
Fault protectionOver Current, Over Temperature, Over Voltage
Battery chemistryLithium Ion/Polymer
Programmable featuresCurrent, Voltage

Product details

What this single-cell charger does

The BQ25619ERTWR is a 1-cell Li-Ion/Polymer battery charger IC from Texas Instruments, controlled over an I²C interface. The supply can go up to 13.5V, which covers typical USB or adapter inputs. The chip integrates fault protection against overcurrent, overtemperature, and overvoltage, and lets you program both the charge current and voltage via I²C.

The BQ25619ERTWR comes in a 24-WFQFN Exposed Pad package, with the supplier device package designated as 24-WQFN (4x4).

Texas Instruments is the sole manufacturer. No official successor or second-source has been announced, so this remains the current production part for the BQ25619 series.

Frequently asked questions

Can the BQ25619ERTWR charge a 2-cell battery pack?

No. The BQ25619ERTWR is designed for a single Li-Ion/Polymer cell only. The battery pack voltage is set to 4.52V, which is typical for a single cell. For 2-cell packs you would need a charger with a higher cell count, such as the BQ25629 series.

What is the maximum charge current of the BQ25619ERTWR?

The maximum programmable charge current is 1.8A. The current is constant and programmable via I²C, so you can set it lower to match the battery's recommended charge rate or to stay within thermal limits.