DESCRIPTION
The LTC®3586-2/LTC3586-3 are highly integrated power management and battery charger ICs for Li-Ion/Polymer battery applications. They include a high efficiency current limited switching Power Path manager with automatic load prioritization, battery charger, ideal diode, and four
synchronous switching regulators (two bucks, one buck boost and one boost). Designed specifically for USB applications, the LTC3586-2/LTC3586-3’s switching power manager automatically limits input current to a maximum of either 100mA or 500mA for USB applications or 1A for adapter-powered applications.

FEATURES
Power Manager
High Efficiency Switching PowerPath™ Controller
with Bat-Track™ Adaptive Output Control and Instant-On Operation
Programmable USB or Wall Current Limit(100mA/500mA/1A)
Full Featured Li-Ion/Polymer Battery Charger with Float Voltage of 4.2V (LTC3586-2) or 4.1V
(LTC3586-3) with 1.5A Maximum Charge Current
Internal 180mΩ Ideal Diode Plus External Ideal Diode Controller Powers Load in Battery Mode
<30µA No-Load Quiescent Current when Powered from BAT
DC/DCs
Dual High Efficiency Buck DC/DCs (400mA IOUT)
High Efficiency Buck-Boost DC/DC (1A IOUT)
High Efficiency Boost DC/DC (800mA IOUT)
DC/DC FAULTOutput
Compact (4mm ×6mm) 38-Pin QFN Package

APPLICATIONS
Portable Medical/Industrial Devices
Other USB-Based Handheld Products