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Texas Instruments BQ24297RGER — Power Management (PMIC / Gate Driver)
Texas Instruments

BQ24297RGER I²C Li-Ion Charger, 3A Max, 24-VQFN

MPNBQ24297RGER
Active

Texas Instruments BQ24297RGER, single-cell Li-Ion/Li-Polymer battery charger, I²C interface, 3A max charge current, 4.2V battery pack voltage, 24-VFQFN Exposed Pad package, -40°C to 85°C operating temperature.

$4.0400Ref. price · indicative, final on quote
BQ24297RGER datasheet
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

BQ24297RGER Technical Specifications
ParameterValue
Mounting typeSurface Mount
Battery pack voltage4.2V
Voltage6.2V
Current - chargingConstant - Programmable
Charge current - max3A
InterfaceI²C
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case24-VFQFN Exposed Pad
Number of cells1
Fault protectionOver Current, Over Temperature, Over Voltage
Battery chemistryLithium Ion/Polymer

Product details

Single-cell Li-Ion charger with I²C control

The Texas Instruments BQ24297RGER is a single-cell Lithium Ion/Polymer battery charger that uses an I²C interface for charge parameter programming and status monitoring. It delivers a programmable constant charge current up to 3 A, with a fixed 4.2 V battery regulation voltage.

Charge current and thermal budget

The 3 A maximum charge current is the ceiling for a single-cell Li-Ion pack — the actual charge rate is set via I²C registers, so the same BOM can support different cell capacities by adjusting the current limit in firmware.

Fault protection and operating range

Integrated over-current, over-temperature, and over-voltage fault protection means the charger can handle a shorted output or a hot environment without external supervisory ICs.

Frequently asked questions

What is the maximum charge current for BQ24297RGER?

The maximum charge current is 3 A, programmable via the I²C interface. The actual charge rate is set in firmware, so the same part can serve different cell capacities by adjusting the current limit.

Does BQ24297RGER require an external microcontroller for I2C control?

Yes — the I²C interface requires an external host microcontroller to write the charge current, termination current, and other configuration registers. Without an I²C master, the charger operates at its default settings, which may not match the battery pack.