BQ25180 I2C Controlled, 1-Cell, 1-A Linear Battery Charger with Power Path and Ship Mode

1 Features

1-A Power path linear battery charger
- 3.0-V to 5.9-V input voltage operating range optimized for battery to battery charging and USB adapter
- 25-V tolerant input voltage
- Configurable battery regulation voltage with 0.5% accuracy from 3.6 V to 4.65 V in 10-mV steps
- 5-mA to 1-A configurable fast charge current
- 55-mΩ battery FET ON resistance
- Up to 2.5-A discharge current to support high system loads
- Configurable termination current down to 0.5 mA
- Configurable NTC charging profile thresholds including JEITA support
- Power cycle and advanced reset mechanisms to recover system
Power path management for powering the system and charging the battery
- Regulated system voltage (SYS) ranging from 4.4 V to 4.9 V in addition to battery voltage tracking and input pass-though options
- Configurable input current limit
- Selectable adapter or battery power for system
- Dynamic power path management optimizes charging from weak adapters

Ultra low quiescent current modes
- 15-nA Shutdown mode
- 3.2-μA Ship mode with button press wake
- 3 μA in Battery Only mode
- 30-μA input adapter Iq in Sleep mode
One push-button wake-up and reset input
Integrated fault protection
- Input overvoltage protection (V_{IN_OVP})
- Battery undervoltage protection (V_BUVLO)
- Battery short protection (BATSC)
- Battery overcurrent protection (BATOCP)
- Input current limit protection (ILIM)
- Thermal regulation (TREG) and thermal shutdown (TSHUT)
- Battery thermal fault protection (TS)
- Watchdog and safety timer fault
- System short protection
- System overvoltage protection