ams has introduced the AS3715, a configurable Power Management IC (PMIC) which enables OEMs to implement power circuits for multiple end-products with a single hardware design.
The new AS3715 includes all the essential power-management building blocks required to provide a power solution for handheld devices powered by lithium-ion batteries. Highly versatile, it offers the capability to programme the start-up configuration, so that the operation of the power system can easily be adapted for different application processors.
The programmability of the start-up sequence and of the built-in DC-DC converters’ outputs allows design teams to accommodate changes in end-product specifications at any time without re-spinning their board design.
The power regulation blocks in the AS3715 include:
- three 4MHz DC-DC step-down converters with programmable outputs
- one DC-DC step-down controller
- two DC-DC step-up converters with programmable outputs
- eight LDOs
The device also offers eight GPIOs, a charger circuit supporting a 1.5A output, an I2C interface, three current sinks, an ADC and a watchdog timer.
The DC-DC controller controls external power stages, allowing the user to maximise efficiency, simplify PCB routing and distribute power and heat dissipation over a wide board area.
The DC-DC controller can manage an output current of up to 8A.
Two of the eight LDOs are low-noise devices well suited to RF modules, image sensors and other noise-sensitive circuits.
Configuration options include the ability to implement either switched-mode or linear charging, depending on whether the design must be optimised for power efficiency or for space and cost.
- Action cameras
- Portable navigation devices
- Portable media players
- Gaming consoles
- OTP boot sequence
- Dual charger power path and DC-DC charger mode
- High-voltage current sinks for LCD backlighting
- Single 2.7-5.5V power supply
- JEITA-compliant temperature supervision
- Operating temperature range: -40°C to 85°C