LTC3586-2
LTC3586-3

PRODUCTION

High Efficiency USB Power Manager with Boost, Buck-Boost and Dual Bucks

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Overview

    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 FAULT Output
  • Compact (4mm × 6mm) 38-Pin QFN Package

The LTC3586-2/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

Applications

  • Portable Medical/Industrial Devices
  • Other USB-Based Handheld Products
LTC3586-2
LTC3586-3
High Efficiency USB Power Manager with Boost, Buck-Boost and Dual Bucks
High Efficiency PowerPath Manager, Dual Buck, Buck-Boost and Boost Battery Charge Current vs Battery Voltage (LTC3586-2) Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

Data Sheet

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Battery Monitors & Fuel Gauges 1
LTC2942-1
Obsolete 1A Battery Gas Gauge with Internal Sense Resistor and Temperature/Voltage Measurement
Circuit Monitors 1
LTC2960
RECOMMENDED FOR NEW DESIGNS 36V Nano-Current Two-Input Voltage Monitor
Protection Switches & Controllers 2
LTC2955
RECOMMENDED FOR NEW DESIGNS Pushbutton On/Off Controller with Automatic Turn-On
LTC4362-1
LTC4362-2
1.2A Overvoltage/Overcurrent Protector
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