Renesas | ISL9120IIAZ-T7A

It’s an ultra-small, low cost, very high efficiency (up to 98%) buck-boost switching regulator with adaptive PFM architecture for low power consumer applications. The ISL9120 has automatic and forced bypass functionality for efficiency enhancement during standby mode. The product is designed to function as the power supply to system or to power system peripheral devices in portable battery powered consumer products. With the large input voltage range of 1.8V – 5.5V, it is optimized for any Li-ion or Li-polymer battery applications but its low voltage input capability makes it ideal for other battery operated systems. This is a high efficiency low cost buck-boost product for portable and wearable products.

Features and Benefits:

Design flexibility to accommodate a variety of design needs

• Wide input voltage range of 1.8V – 5.5V - can work with multiple battery topologies
• Large adjustable output voltage range of 1V – 5.2V – flexibility to use in multiple power rails
• Output Current: Up to 800mA (PVIN=2.5V; VOUT =3.3V) – supports
       large load current dynamic range
• High efficiency 2A switches – can support both high and low load currents

Extends battery life and simplifies design

• Up to 98% efficiency –less power drain and less heat buildup which extends
      the battery life and saves board space by eliminating the need for external heat sinks
• Superior light load efficiency with Iq = 41uA - low power consumption during light load conditions
• The ultra-small PCB footprint - 3mmX3mm TQFN package - saves board space

Reduces power consumption by initializing forced bypass mode for
ultra-low quiescent current in standby mode

• <1uA quiescent current in forced bypass mode – negligible power
       consumption during standby mod

Target Applications:

• Mobile phone
• Tablet
• Handheld consumer and medical devices