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LD39050PU12R датащи(PDF) 1 Page - STMicroelectronics

номер детали LD39050PU12R
подробное описание детали  500 mA low quiescent current low noise voltage regulator
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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LD39050PU12R датащи(HTML) 1 Page - STMicroelectronics

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March 2009
Rev 1
1/24
24
LD39050xx
500 mA low quiescent current
low noise voltage regulator
Features
Input voltage from 1.5 to 5.5 V
Ultra low dropout voltage (200 mV typ. at 500
mA load)
Very low quiescent current (20 µA typ. at no
load, 100 µA typ. at 500 mA load, 1 µA max in
off mode)
Very low noise without bypass capacitor
Output voltage tolerance: ± 2.0 % @ 25 °C
500 mA guaranteed output current
Wide range of output voltages available on
request: 0.8 V to 4.5 V with 100 mV step and
ADJ from 0.8 V
Logic-controlled electronic shutdown
Compatible with ceramic capacitor
COUT = 1 µF
Internal current and thermal limit
Package DFN6 (3 x 3 mm)
Temperature range: -40 °C to 125 °C
Description
The LD39050 provides 500 mA maximum current
from an input voltage ranging from 1.5 V to 5.5 V
with a typical dropout voltage of 200 mV. Stability
is provided using ceramic capacitors. The ultra
low drop-voltage, low quiescent current and low
noise features make it suitable for low power
battery-powered applications. Power supply
rejection is 65 dB at low frequencies and starts to
roll off at 10 kHz. An Enable logic control function
puts the LD39050 in shut-down mode allowing a
total current consumption lower than 1 µA. The
device also includes short-circuit constant current
limiting and thermal protection. Typical
applications are mobile phones, personal digital
assistants (PDAs), cordless phones and similar
battery-powered systems.
DFN6 (3 x 3 mm)
Table 1.
Device summary
Part numbers
Order codes
Output voltages
LD39050XX
LD39050PUR
ADJ from 0.8 V
LD39050XX10
LD39050PU10R
1.0 V
LD39050XX12
LD39050PU12R
1.2 V
LD39050XX25
LD39050PU25R
2.5 V
LD39050XX33
LD39050PU33R
3.3 V
www.st.com


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