Active-Semiconductor’s ACT81460 integrates a full solution for the wearable market with industry-leading standby quiescent current designed to prolong battery life. With a JEITA compliant Active Power Path Linear Charger (APLC) that integrates a 20V smart switch offering protection from faulty chargers or potential high voltage from USB – PD sources. It also includes a programmable input current limit, dynamic voltage limit and other configurable charging parameters such as battery termination voltage and currents, charge rate, battery temperature sense. The fully integrated, 3.3MHz switching frequency DC/DC converters enable the use of small external components and a full range of protection features.
The ACT81460 integrates a highly efficient Buck/Boost converter for a variety of peripherals, such as an optical heart rate sensor, to utilize the full capacity of the battery to as low as 2.7V. The integrated high voltage Boost converter can be used for haptics/vibrations, speaker drivers for audio, or LED backlighting.
The ACT81460 offers a wide range of power channels with the DC/DC converters and a group of LDOs and load switches to give the system architect full flexibility. The ACT81460 is highly configurable that comes pre-programmed or modified via the I2C interface in the field. The outstandingly low quiescent currents in each of the regulators and the battery charger results in extremely high efficiency even with light and near zero load current conditions such as those found in typical wearable applications. The high efficiency of the ACT81460 dramatically prolongs battery life with the device sipping less than 0.7 microamperes per channel of current, even with all of the regulators turned on it is only 7uA.
The ACT81460 is provided in a 3.3×3.3 49pin WLCSP package. Samples and production volume are available through our distribution channel.