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LM2601

Features: · Detects an AC-DC adapter suitable for battery chargingor an airplane or car power line adapter that should not be used for battery charging· Allows the implementation of intelligent switchovercircuits for portable systems ·LM2601 shuts down automatically when adapter is removed·Low lea...

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SeekIC No. : 004394922 Detail

LM2601: Features: · Detects an AC-DC adapter suitable for battery chargingor an airplane or car power line adapter that should not be used for battery charging· Allows the implementation of intelligent swit...

LM2601 Data Sheet

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Part Number:
LM2601
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

· Detects an AC-DC adapter suitable for battery charging or an airplane or car power line adapter that should not   be used for battery charging
· Allows the implementation of intelligent switchover circuits for portable systems  
·LM2601 shuts down automatically when adapter is removed
·Low leakage current from battery when not powered
·Drives P-channel FETs, no Schottky diodes are required
·No reverse inrush current from battery into the adapter output capacitance
·Allows for battery capacity gas-gauge calibration under system software/firmware control
·Adapter over current threshold programmable with external resistors
·Wide input range: 5V - 24V
·Available in TSSOP-14 package


Application

·Portable Computers
·Portable IAs (Internet Appliances, Information Appliances)
·Other Battery Powered Devices


Pinout

Connection Diagram


Specifications

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VADAPTER .................................................−0.3V to 28V
VPEAK SENSE, VDIRECTION SENSE,
VBACKFEED, VDISCONNECT............. −0.3V to VADAPTER
VADAPTER ENABLE,
VMASTER POWER SOURCE........................ −0.3V to 5.5V
VMPS DELAY................................................. −0.3V to 2V
Storage Temperature .........................−40°C to 125°C
ESD Ratings
Human Body Model (Note 2)......................................2kV
Machine Model (Note 3)...........................................200V




Description

The Adapter Interface Circuit (AIC) is used to sense the presence of an external power source for a portable computer. It notifies the computer if a source is present and indicates if the source is appropriate for charging battery packs inside the computer. The AIC also senses an adapter current and its direction. AIC isolates the adapter and signals the computer when peak current threshold is exceeded. LM2601 drives P-channel FETs. No high current rated Schottky diode is required to implement an adapter switchover circuit. This significantly decreases additional heat dissipation during simultaneous fast battery charging while running a computer, particularly in Maximum Performance mode of operation




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