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  2. Power Management
  3. Battery Management
  4. USB Power Manager (PowerPath, Battery Charger)
  5. LTC4088

Data Sheet
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Overview

Features and Benefits

  • Switching Regulator Makes Optimal Use of Limited Power Available from USB Port to Charge Battery  and Power Application
  • 180mΩ Internal Ideal Diode Plus Optional External Ideal Diode Controller Seamlessly Provides Low  Loss Power Path When Input Power is Limited or  Unavailable
  • Full Featured Li-Ion/Polymer Battery Charger
  • VBUS Operating Range: 4.25V to 5.5V (7V Absolute  Maximum—Transient)
  • 1.2A Maximum Input Current Limit
  • 1.5A Maximum Charge Current with Thermal Limiting
  • Bat-Track Adaptive Output Control
  • Slew Control Reduces Switching EMI
  • Low Profile (0.75mm) 14-Lead 4mm × 3mm DFN Package

Product Details

The LTC4088 is a high efficiency USB PowerPath™ controller and Li-Ion/Polymer battery charger. It includes a synchronous switching input regulator, a full-featured battery charger and an ideal diode. Designed specifically for USB applications, the LTC4088’s switching regulator automatically limits its input current to either 100mA, 500mA or 1A for wall-powered applications via logic control.

The switching input stage provides power to VOUT where power sharing between the application circuit and the battery charger is managed. Unlike linear PowerPath controllers, the LTC4088’s switching input stage can use nearly all of the 0.5W or 2.5W available from the USB port with minimal power dissipation. This feature allows the LTC4088 to provide more power to the application and eases thermal issues in space-constrained applications.

An ideal diode ensures that system power is available from the battery when the input current limit is reached or if the USB or wall supply is removed.

The LTC4088 is available in the low profile 14-Lead 4mm × 3mm × 0.75mm DFN surface mount package.

Input Logic Truth Table Automatic Charge Current Reduction 3.3V LDO
LTC4088 Battery charger enabled with all logic inputs grounded No Yes
LTC4088-1 Battery charger enabled with all logic inputs grounded Yes No
LTC4088-2 Battery charger enabled with all logic inputs grounded Yes No

Applications

  • Media Players
  • Digital Cameras
  • GPS
  • PDAs
  • Smart Phones

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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Documentation & Resources

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  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (1)
  • Design Notes (1)
  • Product Selector Card (1)
  • Technical Articles (1)
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    Product Recommendations

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    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    LTC4088EDE#PBF Material Declaration Reliability Data 14-Lead DFN (4mm x 3mm w/ EP)
    LTC4088EDE#TRPBF Material Declaration Reliability Data 14-Lead DFN (4mm x 3mm w/ EP)
    Wafer Fabrication Data R540 Reliability Data

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    Select Model for PCN Information
    • LTC4088EDE#PBF Production
    • LTC4088EDE#TRPBF Production

    Support & Discussions

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