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L4987

Features: ` VERYLOW DROPOUT VOLTAGE (0.25V TYP.)` DROPOUTCONTROL FLAG` VERYLOW QUIESCENTCURRENT (TYP. 90 A IN OFF MODE, 500A INON MODE)` OUTPUT CURRENT UP TO 200 mA` LOGIC-CONTROLLEDELECTRONIC SHUTDOWN` OUTPUT VOLTAGESOF 3V, 5V 8.7V 12V` INTERNAL CURRENT AND THERMAL LIMIT` ONLY2.2F FORSTABILITY` A...

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SeekIC No. : 004389175 Detail

L4987: Features: ` VERYLOW DROPOUT VOLTAGE (0.25V TYP.)` DROPOUTCONTROL FLAG` VERYLOW QUIESCENTCURRENT (TYP. 90 A IN OFF MODE, 500A INON MODE)` OUTPUT CURRENT UP TO 200 mA` LOGIC-CONTROLLEDELECTRONIC SHUTD...

L4987 Data Sheet

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Part Number:
L4987
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/1/11

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Product Details

Description



Features:

` VERYLOW DROPOUT VOLTAGE (0.25V TYP.)
` DROPOUTCONTROL FLAG
` VERYLOW QUIESCENTCURRENT (TYP. 90 A IN OFF MODE, 500A INON MODE)
` OUTPUT CURRENT UP TO 200 mA
` LOGIC-CONTROLLEDELECTRONIC SHUTDOWN
` OUTPUT VOLTAGESOF 3V, 5V 8.7V 12V
` INTERNAL CURRENT AND THERMAL LIMIT
` ONLY2.2F FORSTABILITY
` AVAILABLEIN ± 2% SELECTION AT 25 oC
` SUPPLY VOLTAGEREJECTION: 70 dB (TYP.)


Specifications

Symbol
Parameter
Value
Unit
Vi
 DC Input Voltage
40
V
Io
 Output Current
Internally limited
mA
Ptot
 Power Dissipation
Internally limited
mW
Tstg
 Storage Temperature Range
-40to150
Top
 Operating Junction Temperature Range
-40to125
Absolute Maximum Rating are those values beyond wich damage to the device may occur. Functional operation under these conditions is not implied.


Description

The L4987 is a very low drop regulator available in PPAK. The very low drop-voltage (0.5V Max at 200 mA) and the very low quiescent current make it particularly suitable for low noise, low power applications, and in battey powered systems. The input dump protection up to 40V makes it ideal for automotive applications. a shutdown Logic Control function is available (pin2, TTL compatible). This means that when L4987 is used as a local regulator, it is possible to put a part of the boad in standby, decreasing the total power consumption. The regulator employs an output pin (open collector) providing a logic signal when the pass transistor is in saturation at low input voltage, this signal can be used to prevent the pop-up phenomenon in the car radio. In battery powered systems (the cellular phone,notebook) it is possible to use the flag to monitor the battery charge status through the dropout of the regulator.




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