L4989D013TR ,Low power voltage regulatorFeatures■ Operating DC supply voltage range 5.6 V to 31 V■ Very low quiescent current with watchdog ..
L4989D013TR ,Low power voltage regulatorBlock diagram . . . . 5Figure 2. Pins configuration (top view) . 6Figure 3. Behavior of ..
L4989D013TR ,Low power voltage regulatorAbsolute maximum ratings . . 7Table 4. Thermal data . . . . . 7Table 5. General ..
L4989MD ,Low power voltage regulatorapplications. Table 1. Device summaryOrder codesPackageTube Tape and reelSO-8 L4989D L4989D ..
L4989MD ,Low power voltage regulatorFeatures like reset and watchdog make this devices particularly suitable to supply microprocessor s ..
L4989MD013TR ,Low power voltage regulatorElectrical characteristics . . . . . . . 83 Application information . . . . . 113.1 Voltag ..
LBN04404 , SAW Filter Electrical Characteristic
LBN09010 , 90MHz SAW Filter 24MHz Bandwidth
LBR2012T100K , Wire-wound Chip Inductors (LB series)
LBR2012T100K , Wire-wound Chip Inductors (LB series)
LBR2012T1R0M , WOUND CHIP INDUCTORS
LBR2518T1R0M , WOUND CHIP INDUCTORS
L4989D013TR-L4989MD-L4989MD013TR
Low power voltage regulator
L4989D
L4989MDLow power voltage regulator
Datasheet production data
Features Operating DC supply voltage range 5.6 V to V Very low quiescent current with watchdog
disabled Precision output voltage (3%) Low drop voltage (180 mV typ at Io =150 mA) Reset circuit sensing the output voltage down
to 1V Programmable reset delay with external
capacitor Watchdog disable input Programmable watchdog timer with external
capacitor Thermal shutdown and short circuit protection Wide temperature range (Tj= -40°C to 150°C)
DescriptionThe L4989M and L4989MD are monolithic
integrated 5 V voltage regulators with a low drop
voltage at currents up to 150 mA.
The output voltage regulating element consists in
a p-channel MOS and the regulation is performed
regardless of input voltage transients up to 40V.
The high precision of the output voltage is
obtained with a pre-trimmed reference voltage.
The devices are protected against short circuit
and an overtemperature protection switches off
the devices in case of extremely high power
dissipation.
The L4989M and L4989MD watchdogs are active
when the Enable pin is high. Features like reset
and watchdog make this devices particularly
suitable to supply microprocessor systems in
automotive applications.
Table 1. Device summary
Contents L4989D, L4989MD
Contents Block diagram and pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113.1 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3 Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134.1 ECOPACK® packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 SO-8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3 SO-20 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4 SO-8 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.5 SO-20 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
L4989D, L4989MD List of tables
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 5. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 6. Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 7. Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 8. Watchdog Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 9. SO-8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 10. SO-20 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 11. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
List of figures L4989D, L4989MD
List of figures
Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Pins configuration (top view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Behavior of output current versus regulated voltage Vo . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 4. Reset timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 5. Watchdog timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 6. SO-8 package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 7. SO-20 package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 8. SO-8 tube shipment (no suffix) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 9. SO-8 tape and reel shipment (suffix “TR”) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 10. SO-20 tube shipment (no suffix) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 11. SO-20 tape and reel shipment (suffix “TR”) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
L4989D, L4989MD Block diagram and pin configuration Block diagram and pin configuration
Figure 1. Block diagram
Table 2. Pins description
Block diagram and pin configuration L4989D, L4989MD
Figure 2. Pins configuration (top view)
Table 2. Pins description (continued)
L4989D, L4989MD Electrical specifications
2 Electrical specifications
2.1 Absolute maximum ratings
Note: Maximum ratings are absolute ratings; exceeding any one of these values may cause
permanent damage to the integrated circuit.
2.2 Thermal data
Table 3. Absolute maximum ratings
Table 4. Thermal data With 6 sq. cm on board heat sink.
Electrical specifications L4989D, L4989MD
2.3 Electrical characteristics
VS = 5.6 V to 31 V, Tj = -40°C to +150°C unless otherwise specified.
Table 5. General See Figure3.
L4989D, L4989MD Electrical specifications
Table 6. Reset When Vo becomes lower than 4V, the reset reaction time decreases down to 2µs assuring a faster reset
condition in this particular case.
Table 7. Watchdog
Electrical specifications L4989D, L4989MD
Table 8. Watchdog Enable
