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LD2980ABXX Datasheet

  • LD2980ABXX

  • Ultra low drop voltage regulators compatible with low ESR in...

  • 23頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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LD2980ABxx
LD2980Cxx
Ultra low drop voltage regulators compatible
with low ESR inhibit output capacitors
Features
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Stable with low ESR ceramic capacitors
Ultra low dropout voltage (0.12 V typ. at 50 mA
load, 7 mV typ. at 1 mA load)
Very low quiescent current (80 碌A(chǔ) typ. at no
load in on mode; max 1 碌A(chǔ) in off mode)
Guaranteed output current up to 50 mA
Logic-controlled electronic shutdown
Output voltage of 1.8; 3.0; 3.3; 3.6; 5.0 V
Internal current and thermal limit
鹵 0.5% Tolerance output voltage available (A
version)
Output low noise voltage 160 碌VRMS
Temperature range: -40 to 125 擄C
Smallest package SOT23-5L and SOT-89
Fast dynamic response to line and load
changes
available on pin n擄 3 (TTL compatible). This
means that when the device is used as local
regulator, it is possible to put a part of the board in
standby, decreasing the total power consumption.
The LD2980 is designed to work with low ESR
ceramic capacitors. Typical applications are
cellular phone, laptop computer, personal digital
assistant (PDA), personal stereo, camcorder and
camera.
SOT23-5L
SOT-89
Description
The low drop-voltage and the ultra low quiescent
current make them suitable for low noise, low
power applications and in battery
poweredsystems. The quiescent current in sleep
mode is less than 1 碌A(chǔ) when the INHIBIT pin is
pulled low. A shutdown logic control function is
Table 1.
Device summary
Part numbers
AB Version
C Version
LD2980CXX18
LD2980ABXX30
LD2980ABXX33
LD2980ABXX36
LD2980ABXX50
LD2980CXX33
LD2980CXX36
LD2980CXX50
Output voltage
1.8 V
3.0 V
3.3 V
3.6 V
5.0 V
July 2008
Rev 17
1/23
www.st.com
23

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