LM3622 ,Lithium-Ion Battery Charger ControllerGeneral Descriptionwhen the cell voltage drops below a preset limit. The LVSELThe LM3622 is a charg ..
LM3622AM-4.1 ,Lithium-Ion Battery Charger ControllerGeneral Descriptionwhen the cell voltage drops below a preset limit. The LVSELThe LM3622 is a charg ..
LM3622AM-4.1. ,Lithium-Ion Battery Charger ControllerLM3622 Lithium-Ion Battery Charger ControllerFebruary 2000LM3622Lithium-Ion Battery Charger Control ..
LM3622AM-4.2 ,Lithium-Ion Battery Charger ControllerLM3622 Lithium-Ion Battery Charger ControllerFebruary 2000LM3622Lithium-Ion Battery Charger Control ..
LM3622AM-8.2 ,Lithium-Ion Battery Charger ControllerFeaturesThe LM3622 accepts input voltages from 4.5V to 24V. Con-n Versions for charging of 1 cell ( ..
LM3622AM-8.4 ,Lithium-Ion Battery Charger ControllerGeneral Descriptionwhen the cell voltage drops below a preset limit. The LVSELThe LM3622 is a charg ..
LMV344IDR ,Quad Rail-To-Rail Output CMOS Operational Amplifier with Shutdown 14-SOIC -40 to 125Electrical Characteristics: V = 5 V 6+11.2 Community Resources...... 186.7 Shutdown Characteristics ..
LMV344IDRG4 ,Quad Rail-To-Rail Output CMOS Operational Amplifier with Shutdown 14-SOIC -40 to 125Features 3 DescriptionThe LMV34x devices are single, dual, and quad1• 2.7-V and 5-V PerformanceCMOS ..
LMV344IPW ,Quad Rail-To-Rail Output CMOS Operational Amplifier with Shutdown 14-TSSOP -40 to 125features of the family are a 20-nV/√Hzvoltage noise at 10 kHz, 1-MHz unity-gain bandwidth,• ESD Pro ..
LMV344IPWG4 ,Quad Rail-To-Rail Output CMOS Operational Amplifier with Shutdown 14-TSSOP -40 to 125 SLOS447I–SEPTEMBER 2004–REVISED MAY 20165 Pin Configuration and FunctionsDBV or DCK Package6-Pin S ..
LMV344IPWR ,Quad Rail-To-Rail Output CMOS Operational Amplifier with Shutdown 14-TSSOP -40 to 125D or PW Package14-Pin SOIC or TSSOPTop View1OUT 1 14 4OUT1IN– 2 13 4IN–1IN+ 3 12 4IN+V 4 11 GND+2 ..
LMV344MA ,Single with Shutdown/Dual/Quad General Purpose, 2.7V,Rail-to-Rail Output, 125°C, Operational AmplifiersApplicationsLMV341/342/344areguaranteedtooperateoverthevoltagerange of 2.7V to 5.0V and all have ra ..
LM3622
Lithium-Ion Battery Charger Controller
LM3622
Lithium-Ion Battery Charger Controller
General DescriptionThe LM3622isa charge controllerfor Lithium-Ion batteries.
This monolithic integrated circuit accurately controlsan ex-
ternal pass transistorfor precision Lithium-Ion battery charg-
ing. The LM3622 providesa constant voltageor constant
current (CVCC) configuration that changes,as necessary,to
optimally charge lithium-ion battery cells. Voltage charging
versions (4.1V, 4.2V, 8.2V, and 8.4V) are availablefor oneor
two cell battery packs andfor cokeor graphite anode battery
chemistry.
The LM3622 accepts input voltages from 4.5Vto 24V. Con-
troller accuracy over temperatureis ±30mV/cellforA grade
and ±50mV/cellfor the standard grade.No precision exter-
nal resistorsare required. Furthermore,the LM3622’s propri-
etary output voltage sensing circuit drains less than 200nA
fromthe battery when the input sourceis disconnected.
The LM3622 circuitry includes functionsfor regulating the
charge voltage witha temperature compensated bandgap
reference and regulatingthe current withan external sense
resistor. The internal bandgap insures excellent controller
performance overthe operating temperature and input sup-
ply range.
The LM3622 can sink 15mA minimumatthe EXTpinto drive
the baseofan external PNP pass transistor.It also has
low-voltage battery threshold circuitry that removes this drive
whenthe cell voltage drops belowa preset limit. The LVSEL
pin programs this threshold voltageto either 2.7V/cellor
2.15V/cell. The low-voltage detection, whichisa user en-
abled feature, providesan output signal that canbe usedto
enablea ″wakeup charge″ source automaticallyto precon-
ditiona deeply discharged pack.
The LM3622is availableina standard 8-lead SOIC surface
mount package.
Features Versionsfor chargingof1 cell (4.1Vor 4.2V)or2 cells
(8.2Vor 8.4V) Versionsfor cokeor graphite anode Precision (±30mV/cell) end-of-charge control Wide input range: 4.5V-24V Low battery drain leakage: 200nA15 mA availableto drive low cost PNP
Applications Cellular phone cradle charger PDA/Notebook cradle charger Camcorder cradle charger
Typical ApplicationFebruary 2000
LM3622
Lithium-Ion
Battery
Charger
Controller
