New I2C controlled single-cell battery charger features 2x LDOs

Halo Microelectronics has launched its 3A I2C-controlled single-cell battery charger with two LDOs.

The HL7095 is an advanced I2C interface switch-mode Li-ion battery charger providing power FETs, power-path management, and a reverse boost function. It is a fully integrated solution for various devices, including wearables, smartphones, tablet computing, power banks, and other portable electronics.

The versatile device is compatible with single-cell and multiple-cell in parallel Li-ion and Li-polymer batteries. Its switch-mode operation and low-resistance power path provide optimal charging, discharging and boost efficiency, lowering battery charging time and extending battery life during discharge.

The device supports varied input sources, such as standard USB host ports, USB charging ports, and AC/DC adapters. It accepts input voltages ranging from 3.9V to 12V, allowing it to power up the system rail without needing a battery.

The charger can autonomously manage the full charging cycle of a Li-ion battery, with or without an I2C host. It efficiently detects battery voltage and follows four charging phases: trickle charge, pre-charge, constant current, and constant voltage.

The charger provides improved convenience and versatility with its reverse boost function, supplying a programmable 4V to 10.3V output at VBUS/PMID. This supports USB OTG mode and accessory mode, allowing the battery to supply up to 1A load current. Also, it offers two LDOs to power accessories like headsets or LEDs under the accessory mode, utilising either VBUS via QRB or directly from PMID through reverse boost.

“The HL7095 is a configurable battery management IC that integrates a switching charger, a reverse boost, and two LDOs,” stated David Nam, CEO of Halo Microelectronics. “Its low quiescent current and compact solution size make the HL7095 well suited for both smartphone as well as wearable applications, making it a highly integrated yet versatile charging solution,” he added.