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BQ25170JDSGR

Single-Cell Linear Battery Charger IC

BQ25170JDSGR is a TI standalone 800 mA linear battery charger for single-cell Li-Ion, Li-polymer and LiFePO4 batteries, JEITA-compliant via NTC monitoring. Resistor-programmed VSET (3.5 V to 4.4 V) and ISET (10 mA to 800 mA) remove the need for I2C, while 30 V input tolerance, 350 nA battery leakage and a 2 mm × 2 mm WSON-8 (DSG) package fit wearables and TWS headsets.

ManufacturerTexas Instruments
PackageWSON (DSG), 8-pin, 2.00 × 2.00 mm
SeriesBQ25170J

Interface IC Specifications

ParameterValue / Specification
Function / TopologyStandalone single-cell linear battery charger with precharge, fast-charge CC and CV regulation phases
Input Voltage3.0 V to 6.6 V operating input; 30 V absolute-max input tolerance
Output Voltage / CurrentUp to 800 mA programmable charge current (10 mA to 800 mA via ISET); battery regulation 3.5 V to 4.4 V via VSET
Battery Chemistry1-cell Li-Ion, Li-polymer and LiFePO4; JEITA temperature profiling via TS/NTC
Accuracy+/-0.5% charge voltage regulation; +/-10% charge current
Low Power350 nA battery leakage current; automatic sleep mode; 80 uA input leakage when disabled
Protection6.6 V input OVP, output OVP, 1000 mA OCP, OUT short, thermal regulation 125 °C and 150 °C shutdown
Temperature Grade-40 °C to +125 °C operating junction
Package / CaseWSON (DSG), 8-pin, 2.00 × 2.00 mm

Interface Features & Applications

  • JEITA-compliant linear charging for 1-cell Li-Ion/LiPo/LiFePO4
  • Resistor-programmed voltage and current - no I2C required
  • 30 V tolerant input handles adapter transients without extra FETs
  • 350 nA battery leakage preserves shelf life of small cells
  • Integrated OVP, OCP, short-circuit and thermal protections
  • Tiny 2 mm × 2 mm WSON-8 (DSG) footprint for TWS and wearables

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