Features: Ultra low dropout voltage
Low ground pin current
Load regulation of 0.08%
1µA quiescent current in shut down mode
Guaranteed output current of 3A DC
Available in TO-263 and TO-220 packages
Output voltage accuracy ±1.5%
Error flag indicates output status
Sense option improves load regulation
Minimum output capacitor requirements
Overtemperature/overcurrent protection
−40˚Cto+125˚C junction temperature rangeApplicationMicroprocessorpowersupplies
GTL,GTL+,BTL,andSSTLbusterminators
PowersuppliesforDSPs
SCSIterminator
Postregulators
Highefficiencylinearregulators
Batterychargers
OtherbatterypoweredapplicationsSpecificationsStorageTemperatureRange...................................................−65˚Cto+150˚C
LeadTemperature
(Soldering,5sec.)..................................................................................260˚C
ESDRating(Note3)....................................................................................2kV
PowerDissipation(Note2)....................................................InternallyLimited
InputSupplyVoltage(Survival)..................................................−0.3Vto+7.5V
ShutdownInputVoltage(Survival)...............................................−0.3Vto7.5V
OutputVoltage(Survival),(Note6),(Note7)................................−0.3Vto+6.0V
IOUT(Survival) Short Circuit Protected
Maximum Voltage for ERROR
Pin...........................................................................................................VIN
Maximum Voltage for SENSE Pin ..........................................................VOUT
| Output Current |
3000 mA |
| Output Min |
1.8, 2.5, 3.3, 5 Volt |
| Input Min Voltage |
2.5 Volt |
| Input Max Voltage |
7 Volt |
| Dropout Voltage |
0.8 Volt |
| Adjustable Output |
No |
| Quiescent Current |
6 mA |
| On/Off Pin |
Yes |
| Error Flag |
No |
| RegType |
LDO |
| Temperature Min |
-40 deg C |
| Temperature Max |
125 deg C |
| Output Voltage |
1.8, 2.5, 3.3, 5 Volt |
| Output Max |
1.8, 2.5, 3.3, 5 Volt |
| View Using Catalog |
DescriptionTheLP3873/LP3876series offastultra low-dr opoutlinear regulators operate from a+2.5Vto+7.0 Vinput supply.Wide range of preset output voltage options are available.These ultra low dropout linear regulators respond very quicklyto step changes in load,which makes them sui table forlow voltage micr oprocessorapplications.TheLP3873/LP3876 are devel opedonaCMOS process which allows low quies-cenr current operation independentof output load current.This CMOS process also allows the LP3873/LP3876toop-erateunder extremely low dropout conditions.
Dropout Voltage: Ultralow dropout voltage;typically 80mV at300mA load current and 800mV at 3A load current. Ground Pin Current: Typically 6mA at 3A load current. Shut down Mode: Typically 1µA quies centcurrent when the shut down pinispulled low.
ErrorFlag: Error flag goes low when the output voltage drops10 be low nomin alvalue. SENSE:Sense pinimp rovesregul at ionatremote loads.PrecisionOutputVoltage:Multipleout put voltage optionsare available ranging from 1.8V to 5.0V with aguaranteed accuracy of ±1.5% at room temperature,and ±3.0% over all conditions(varyingline,load,andtemperature).
LP3876 Data Sheet
