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LTC3586-2/LTC3586-3 - High Efficiency USB Power Manager with Boost, Buck-Boost and Dual Bucks

Datasheet

Documentation

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 I_OUT)
High Efficiency Buck-Boost DC/DC (1A I_OUT)
High Efficiency Boost DC/DC (800mA I_OUT)
DC/DC FAULT Output
Compact (4mm × 6mm) 38-Pin QFN Package

Typical Application

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 PowerPath manager with automatic load prioritization, battery charger, ideal diode, and four synchronous switching regulators (two bucks, one buckboost 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.

Unlike linear chargers, the LTC3586-2/LTC3586-3 switching architecture transmits nearly all of the power available from the USB port to the load with minimal loss and heat which eases thermal constraints in small places. The two buck regulators can provide up to 400mA each, the buck-boost can deliver 1A, and the boost delivers at least 800mA.

The LTC3586-2/LTC3586-3 are available in a low profile (0.75mm) 38-pin 4mm × 6mm QFN package.

Options	Float Voltage (V)	Fault Pin Functionality	Boost Overvoltage Threshold (V)	Boost Overvoltage Hysteresis
LTC3586	4.2V	Bi-Directional with Latch	5.3V	300mV
LTC3586-1	4.1V	Bi-Directional with Latch	5.3V	300mV
LTC3586-2	4.2V	Output Only, No Latch	5.5V	100mV
LTC3586-3	4.1V	Output Only, No Latch	5.5V	100mV

Packaging

4x6 QFN-38

Order Info

Package Variations and Pricing

Part Number	Package	Pins	Temp	Price (1-99)	Price (1k)^*
LTC3586EUFE#PBF	QFN	38	E	$7.57	$5.30
LTC3586EUFE#TRPBF	QFN	38	E		$5.36
LTC3586EUFE-1#PBF	QFN	38	E	$7.57	$5.30
LTC3586EUFE-1#TRPBF	QFN	38	E		$5.36
LTC3586EUFE-2#PBF	QFN	38	E	$7.57	$5.30
LTC3586EUFE-2#TRPBF	QFN	38	E		$5.36
LTC3586EUFE-3#PBF	QFN	38	E	$7.57	$5.30
LTC3586EUFE-3#TRPBF	QFN	38	E		$5.36

^* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.