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Datasheet Linear Technology LTC3576-1

ManufacturerLinear Technology
SeriesLTC3576-1

Switching Power Manager with USB On-the-Go + Triple Step-Down DC/DCs

Datasheets

  • Download » Datasheet, PDF, 602 Kb, Revision: B, File uploaded 10-22-2017
    LTC3576/LTC3576-1 - Switching Power Manager with USB On-the-Go + Triple Step-Down DC/DCs
    Docket ↓
    LTC3576/LTC3576-1
    Switching Power Manager
    with USB On-the-Go + Triple
    Step-Down DC/DCs
    DESCRIPTION FEATURES
    n Bidirectional Switching Regulator with Bat-Track™
    Adaptive Output Control Provides Efficient Charging
    and a 5V Output for USB On-The-Go
    Bat-Track Control of External High Voltage StepDown Switching Regulator
    Overvoltage Protection Guards Against Damage
    Instant-On Operation with Discharged Battery
    Triple Step-Down Switching Regulators with I2C
    Adjustable Outputs (1A/400mA/400mA IOUT)
    180mΩ Internal Ideal Diode + External Ideal Diode
    Controller Powers the Load in Battery Mode
    Li-Ion/Polymer Battery Charger (1.5A Max ICHG)
    Battery Float Voltage: 4.2V (LTC3576), 4.1V (LTC3576-1)
    Compact (4mm × 6mm × 0.75mm) 38-Pin QFN Package APPLICATIONS n HDD-Based Media Players
    GPS, PDAs, Digital Cameras, Smart Phones
    Automotive Compatible Portable Electronics The LTC®3576/LTC3576-1 are highly integrated power
    management and battery charger ICs for Li-Ion/Polymer
    battery applications. They each include a high efficiency,
    bidirectional switching PowerPath™ manager with automatic load prioritization, a battery charger, an ideal diode, a ...

Prices

Packaging

LTC3576EUFE-1#PBFLTC3576EUFE-1#TRPBF
Package4x6 QFN-38
Package Outline Drawing
4x6 QFN-38
Package Outline Drawing
Package CodeUFEUFE
Package Index05-08-175005-08-1750
Pin Count3838

Parametrics

LTC3576EUFE-1#PBFLTC3576EUFE-1#TRPBF
Battery ChemistryLi-Ion, Li-PolymerLi-Ion, Li-Polymer
Buck Output Current, A0.4, 0.4, 10.4, 0.4, 1
Demo BoardsDC1334A,DC1577ADC1334A,DC1577A
Export Controlnono
FeaturesPowerPath, Battery Charger, Triple BuckPowerPath, Battery Charger, Triple Buck
Float Voltage, V4.24.2
Max Charge Current, A1.51.5
Number of Cells11
Number of Outputs33
Operating Temperature Range, °C0 to 850 to 85
PowerPathSwitching PowerPath, 180mΩ Internal Ideal DiodeSwitching PowerPath, 180mΩ Internal Ideal Diode
Type of ChargerLinearLinear
Vin Max, V5.55.5
Vin Min, V4.354.35

Eco Plan

Other Options

LTC3576

Articles

  • Download » Articles - LT Journal, PDF, 270 Kb, 06-01-2009
    Power Management IC Combines USB On-The-Go and USB Charging in Compact Easy-to-Use Solution
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    L DESIGN FEATURES Power Management IC Combines
    USB On-The-Go and USB Charging in
    Compact Easy-to-Use Solution
    The USB interface was originally
    designed so that the device providing
    power (an “A” device) would act as the
    host and the device receiving power (a
    “B” device) was the peripheral. The A
    plug of the USB cable would always
    connect to the host device and the B
    plug would connect to the peripheral.
    The USB On-The-Go (OTG) standard,
    however, removes that restriction, so
    that the B device can now become a
    host and the A device can act as a
    peripheral.
    In the USB specification, standard
    hosts and hubs are limited to providing
    500mA to each downstream device,
    but if a device is designated as a USB
    charger, it can supply up to 1.5A. USB
    chargers come in two flavors. A “dedicated charger” is a charger that is not
    capable of data communication with ...
  • Download » Articles - LT Journal, PDF, 240 Kb, 03-01-2009
    1.2A Monolithic Buck Regulator Shrinks Supply Size and Cost with Programmable Output Current Limit
    Docket ↓
    L DESIGN FEATURES 1.2A Monolithic Buck Regulator
    Shrinks Supply Size and Cost with
    Programmable Output Current Limit
    by Tom Sheehan Introduction
    Power supplies are often overqualified
    for their job. This is because power
    ICs often specify a current limit that
    is more than twice the rated output
    current of the device. The power supply
    components are sized to handle the
    maximum current that the IC can deliver, even if loads are unlikely to draw
    that current during normal operation.
    The components are bigger and more
    expensive than they need to be.
    There is, however, an alternative:
    set an accurate maximum output current on the supply once the real world
    load is known. Accurately setting the
    maximum output current reduces the
    required current rating of the regulator’s power path components, thus
    replacing big, expensive components
    with smaller, less expensive ones.
    A limit on the regulator’s maximum output limits the maximum power
    dissipation of both the supply and ...

Moldel Line

Series: LTC3576-1 (2)

Manufacturer's Classification

  • Power Management > PMIC & Multifunction > PMIC (DC/DC, PowerPath and Battery Charger)

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