LTC4080
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LTC4080

500mA Standalone Li-Ion Charger with Integrated 300mA Synchronous Buck

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $2.31
Features
  • Complete Linear Battery Charger with Integrated Buck Converter
Battery Charger:
  • Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charge Rate Without Risk of Overheating
  • Internal 4.5-Hour Safety Timer for Termination
  • Charge Current Programmable Up to 500mA with 5% Accuracy
  • C/10 Charge Current Detection Output
  • 5µA Supply Current in Shutdown Mode
Switching Regulator:
  • High Efficiency Synchronous Buck Converter
  • 300mA Output Current
  • 2.7V to 4.5V Input Range (Powered from BAT Pin)
  • 0.8V to VBAT Output Range
  • MODE Pin Selects Fixed (2.25MHz) Constant-Frequency PWM Mode or Low ICC (23µA) Burst Mode®  Operation
  • 2µA BAT Current in Shutdown Mode
Additional Details
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The LTC4080 is a complete constant-current/constant-voltage linear battery charger for a single-cell 4.2V lithium-ion battery with an integrated 300mA synchronous buck converter. The small packages and low external component count make the LTC4080 especially suitable for portable applications. Furthermore, LTC4080 is specifically designed to work within USB power specifications.

The CHRG pin indicates when charge current has dropped to ten percent of its programmed value (C/10). An internal 4.5-hour timer terminates the charge cycle. The full-featured LTC4080 battery charger also includes trickle charge, automatic recharge and soft-start (to limit inrush current)

The LTC4080 integrates a synchronous buck converter that is powered from the BAT pin. It has an adjustable output voltage and can deliver up to 300mA of load current. The buck converter also features low current high-efficiency Burst Mode operation that can be selected by the MODE pin.

The LTC4080 is available in 10-lead, low profile (0.75 mm) 3mm × 3mm DFN and MSOP Exposed Pad packages.

Trickle Charge Package
LTC4080 Yes DFN-10
LTC4080X No DFN-10, MS-10

Applications

  • Wireless Headsets
  • Bluetooth Applications
  • Portable MP3 Players
  • Multifunction Wristwatches
Part Models 4
1ku List Price Starting From $2.31

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Jun 5, 2024

- 24_0003

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

Feb 4, 2020

- 20_0130

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LTC4080EMSE#PBF

PRODUCTION

LTC4080EMSE#TRPBF

PRODUCTION

Filter by Model

reset

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Part Models

Product Lifecycle

PCN

Jun 5, 2024

- 24_0003

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Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

Feb 4, 2020

- 20_0130

arrow down

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LTC4080EMSE#PBF

PRODUCTION

LTC4080EMSE#TRPBF

PRODUCTION

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