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LM3658

Features: Integrated power FETs with thermal regulationCharges from either an AC wall adapter or USB power source with automatic source selection50 mA to 1000 mA charge currents using AC wall adapter Pin-selectable USB charge currents of 100 mA or 500 mA Continuous battery temperature monitoringB...

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SeekIC No. : 004395405 Detail

LM3658: Features: Integrated power FETs with thermal regulationCharges from either an AC wall adapter or USB power source with automatic source selection50 mA to 1000 mA charge currents using AC wall adapt...

LM3658 Data Sheet

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Part Number:
LM3658
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/23

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Product Details

Description



Features:

Integrated power FETs with thermal regulation
Charges from either an AC wall adapter or USB power source with automatic source selection
50 mA to 1000 mA charge currents using AC wall adapter
Pin-selectable USB charge currents of 100 mA or 500 mA
Continuous battery temperature monitoring
 Built-in multiple safety timers
Charge status indication
Continuous over-current and temperature protection
Near-depleted battery pre-conditioning
Sleep mode with ultra low quiescent current
On-board Kelvin-sensing achieves ±0.35% termination accuracy
Maintenance mode with automatic recharge
Thermally enhanced 3 mm x 3 mm LLP package


Application

Smartphones
Digital still cameras
PDAs
Hard Drive and flash-based MP3 players
 USB-powered devices


Pinout

Connection Diagram


Specifications

CHG_IN, USBpwr (VCC)

−0.3V to +6.5V

All other pins except GND −0.3V to CHG_IN or USBpwr
Power Dissipation (Note 3) Internally Limited
Junction Temperature (TJ-MAX) +150°C
Storage Temperature Range −65°C to +150°C
ESD Rating (Note 4)
Human Body Model:
Machine Model:		 2.0 kV
200V



Description

The LM3658 is a single chip charger IC designed for handheld applications. It can safely charge and maintain a single cell Li-Ion/Polymer battery operating from an AC wall adapter or USB power source. Input power source selection of USB/AC is automatic. With both power sources present, the AC power source has priority. Charge current is programmed through an external resistor when operating from an AC wall adapter allowing charge currents from 50 mA to1000 mA. When the battery is charged using USB power, charge currents of 100 mAor 500 mAare pin-selectable. The termination voltage is controlled to within ±0.35% of 4.2V.

The LM3658 requires few external components and integrates internal power FETs, reverse current protection and current sensing. The internal power FETs are thermally regulated to obtain the most efficient charging rate for a given ambient temperature.




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