Intersil introduced a buck-boost switching regulator that enables efficient power management of system power supplies and peripherals such as Wi-Fi, Bluetooth, memory cards or LCD modules in connected devices, including wearables, smartphones, smart thermostats and point-of-sale devices. The regulator supports single-cell Li-ion or Li-polymer batteries, or 2-cell alkaline, NiCd or NiMH batteries.
Key features and specifications
- Ultra high efficiency up to 98% reduces power drain and heat buildup
- Accepts a wide input voltage range from 1.8V to 5.5V, works with multiple battery topologies
- Large adjustable output voltage range from 1V to 5.2V for use with multiple power rails
- Output current up to 800mA (Vin = 2.5V, Vout = 3.3V)
- 2A switches supports both high and light load currents with high efficiency
- Ultra-small footprint with 1.41mm x 1.41mm package saves board space, requires only a single inductor
- Quiescent current of 41uA maximizes light load efficiency for low power consumption
- Automatic and selectable forced bypass power saving mode reduces quiescent current to less than 0.5uA
- Full protection for under-voltage, short-circuit and over-temperature
“Intersil’s innovative adaptive PFM architecture addresses the most critical low power design requirements for wearables and other 4G/Wi-Fi-enabled portable products functioning as IoT connected nodes,” said Andrew Cowell, senior vice president of Mobile Power Products at Intersil. “The new ISL9120 regulator’s small size, industry leading efficiency, smooth transition between buck and boost modes and rapid transient response to a large load step is extremely attractive to customers.”
