LM2601MTC National Semiconductor, LM2601MTC Datasheet

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LM2601MTC

Manufacturer Part Number
LM2601MTC
Description
IC ADAPT INTERFC CIRCUIT 14TSSOP
Manufacturer
National Semiconductor
Datasheet

Specifications of LM2601MTC

Function
Charge Management
Battery Type
All Battery Types
Voltage - Supply
5 V ~ 24 V
Operating Temperature
-20°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
14-TSSOP (0.173", 4.40mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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© 2001 National Semiconductor Corporation
LM2601
Adapter Interface Circuit
General Description
The Adapter Interface Circuit (AIC) is used to sense the
presence of an external power source for a portable com-
puter. 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 switcho-
ver circuit. This significantly decreases additional heat dissi-
pation during simultaneous fast battery charging while run-
ning a computer, particularly in Maximum Performance
mode of operation
Features
n Detects an AC-DC adapter suitable for battery charging
n Allows the implementation of intelligent switchover
Block Diagram
or an airplane or car power line adapter that should not
be used for battery charging
circuits for portable systems
DS101309
n LM2601 shuts down automatically when adapter is
n Low leakage current from battery when not powered
n Drives P-channel FETs, no Schottky diodes are required
n No reverse inrush current from battery into the adapter
n Allows for battery capacity gas-gauge calibration under
n Adapter over current threshold programmable with
n Wide input range: 5V - 24V
n Available in TSSOP-14 package
Applications
n Portable Computers
n Portable IAs (Internet Appliances, Information
n Other Battery Powered Devices
removed
output capacitance
system software/firmware control
external resistors
Appliances)
10130901
www.national.com
April 2001

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LM2601MTC Summary of contents

Page 1

... Allows the implementation of intelligent switchover circuits for portable systems Block Diagram © 2001 National Semiconductor Corporation n LM2601 shuts down automatically when adapter is removed n Low leakage current from battery when not powered n Drives P-channel FETs, no Schottky diodes are required ...

Page 2

... Pin Configuration Ordering Information Order Number Package Number LM2601MTC LM2601MTCX * Partial Rails are available, there is no minimum order quantity. Tape and Reel is supplied as full reels only. Pin Description Pin No. Name 1 MPS DELAY 2 MASTER POWER SOURCE 3 ADAPTER ENABLE 4 ADAPTER PRESENT 5 CHARGER PRESENT ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V ADAPTER PEAK SENSE DIRECTION SENSE , V V BACKFEED DISCONNECT V , ADAPTER ENABLE V MASTER POWER SOURCE V MPS DELAY Electrical Characteristics Limits with standard typeface apply for T ...

Page 4

Electrical Characteristics Note 5: Adapter Enable input is used to change the state of Disconnect, Direction Sense input is used to change the state of Backfeed. a. Fall time is measured as the time it takes Backfeed or Disconnect voltage ...

Page 5

Application Information The adapter interface circuit (AIC) IC provides the control functions necessary for use in mating a constant voltage output AC-DC adapter or airline adapter to a notebook com- puter system or a portable device. It allows optimal battery ...

Page 6

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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