Programmable power management IC handles dual Li-ion batteries
The IC is a compact system PMU supporting two Li-ion batteries and up to 15 power rails and offering advanced power management functions. It is configured to supply all ICs and peripherals in a typical battery powered mobile device. The boost converters are designed with specific functions in mind; there is a 5V HDMI booster, and a HV backlight boost controller with three current sinks. Of the eight LDOs, four are low-noise (250 mA, with the remainder at 300 mA).
Included on the AS3716 is a linear or switch mode Li-ion battery charger with constant current and constant voltage operation. The IC is configurable by one-time-programmable memory (OTP) to control the ramp-up sequence of the various output power rails.
Features include;
– OTP programmable boot sequence
– DC/DC controller for remote power generation and heat distribution
– Dual charger power path and DC/DC charger mode
– HDMI boost, backlight boost and HV sinks (3x 40 mA)
– 4 MHz DC/DC bucks, supervisor, general purpose IOs, ADC
ams offers a range of reference designs that target a range of processor cores, notably ARM Cortex cores from numerous vendors.
ams; https://ams.com/eng/Products/Power-Management/Power-Management-Units/AS3716
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