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STMicroelectronics Electronic Components Datasheet

L4989 Datasheet

LOW POWER VOLTAGE REGULATOR

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L4989 pdf
L4989
Low power voltage regulator
Features
Operating DC supply voltage range 5.6V to
31V
Very low quiescent current with watchdog
disabled
Precision output voltage (3%)
Low drop voltage (180mV typ ai Io=150mA)
)Reset circuit sensing the output voltage down
t(sto 1V
cProgrammable reset delay with external
ucapacitor
dWatchdog disable input
roProgrammable watchdog timer with external
Pcapacitor
teThermal shutdown and short circuit protection
oleWide temperature range (Tj = -40°C to 150°C)
SO-8
SO-20
) - ObsTable 1. Device summary
ct(sPackage
roduSO-8
Obsolete PSO-20
Tube
L4989D
L4989MD
Order codes
Tape & reel
L4989D013TR
L4989MD013TR
November 2008
Rev 3
1/19
www.st.com
19


STMicroelectronics Electronic Components Datasheet

L4989 Datasheet

LOW POWER VOLTAGE REGULATOR

No Preview Available !

L4989 pdf
Contents
Contents
L4989
1 Block diagram and pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
)3.3 Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
uct(s4 Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
rod4.1 ECOPACK® packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
P4.2 SO-8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
te4.3 SO-20 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
le4.4 SO-8 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
so4.5 SO-20 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Obsolete Product(s) - Ob5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2/19


Part Number L4989
Description LOW POWER VOLTAGE REGULATOR
Maker STMicroelectronics
Total Page 19 Pages
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