Product Details

describe:

The BQ25180 is a linear battery charger IC focused on small solution size and low quiescent current to extend battery life. The device is housed in an 8-ball AD5282BRU20 chip-scale package that eliminates the need for an HDI PCB process for fabrication, reducing PCB costs. The device can support charging currents up to 1A and system loads up to 2.5A.

The battery is charged using a standard Li-Ion or LiFePO4 charging profile in three stages: pre-charge, constant current and constant voltage. Thermal regulation provides maximum charge current while managing device temperature. The charger is also optimized for battery-to-battery charging with a minimum input voltage of 3V and can withstand an absolute maximum line transient of 25V. The device integrates a single button input and reset circuit to reduce the overall solution size.

characteristic:

1-A power path linear battery charger

○3.0V to 5.9V input voltage operating range optimized for battery-to-battery charging and USB adapters

○25V withstand input voltage

○ Configurable battery regulation voltage with 0.5% accuracy, 3.6V to 4.65V range in 10mV steps

○5mA to 1A Configurable Fast Charge Current

○55mΩ battery FET on-resistance

○Up to 2.5A discharge current to support high system load

○ Configurable termination current down to 0.5 mA

○ Configurable NTC charging profile thresholds, including JEITA support

○ Power cycle and advanced reset mechanism to restore the system

● Power path management for powering the system and charging the battery

○ Regulated system voltage (SYS) range from 4.4 V to 4.9 V, except for battery voltage tracking and input pass-through options

○ Configurable input current limit

○System optional adapter or battery power supply

○ Dynamic power path management to optimize weak adapter charging

●Ultra low quiescent current mode

○15nA shutdown mode

○3.2μA shipping mode, button press wake up

○ 3 μA in battery mode only

○ 30μA input adapter Iq in sleep mode

●One-key wake-up and reset input

● Integrated fault protection

○Input overvoltage protection (V IN_OVP )

○Battery under-voltage protection (V BUVLO)

○Battery short circuit 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 failure

○System short circuit protection

○System overvoltage protection

parameter:

Number of batteries in series: 1

Charging current (Max) (A): 1

Working Vin (Max) (V): 5.5

Cytochemistry: Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4

Battery charging voltage (Min) (V): 3.6

Battery charging voltage (Max) (V): 4.65

Absolute input voltage (safety level) (max) ((V)): 25

Control interface: I2C

Features: BAT temperature thermistor monitoring (JEITA profile), IC thermal regulation, IINDPM (input current limit), input OVP, power path, VINDPM (input voltage threshold to maximize adapter power)

Operating voltage (Min) (V): 3