BQ24253 - Texas Instruments

BQ24253 Stand-Alone Switched-Mode Li-Ion Battery Charger

The bq24250, bq24251, and bq24253 are highly integrated single-cell Li-Ion battery chargers and system power-path management devices targeted for space-limited, portable applications with high-capacity batteries. The single-cell charger has a single input that operates from either a USB port or an AC wall adapter for a versatile solution. Device Information.

Features

• High-Efficiency Switched-Mode Charger With Separate Power Path
• Startup System From Deeply Discharged or Missing Battery
• USB Charging Compliant
  – Selectable Input Current Limit of 100 mA, 500 mA, 900 mA, 1.5 A, and 2 A
• BC1.2 Compatible D+, D
  – Detection
• In Host Mode (After I2C Communication Starts and Before Watchdog Timer Times Out)
  – Programmable Battery Charge Voltage, VBATREG
  – Programmable Charge Current (ICHG)
  – Programmable Input Current Limit (ILIM)
  – Programmable Input Voltage-Based Dynamic Power Management Threshold, (VIN_DPM)
  – Programmable Input Overvoltage Protection Thres.