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LD2985BM47R Arkusz danych(PDF) 1 Page - STMicroelectronics

Numer części LD2985BM47R
Szczegółowy opis  VERY LOW DROP AND LOW NOISE VOLTAGE REGULATOR LOW ESR CAP. COMPATIBLE, WITH INHIBIT FUNCTION
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LD2985BM47R Arkusz danych(HTML) 1 Page - STMicroelectronics

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July 2003
s
VERY LOW DROPOUT VOLTAGE (280mV
AT 150mA AND 7mV AT 1mA LOAD)
s
VERY LOW QUIESCENT CURRENT (2mA
TYP. AT 150mA LOAD AND 80
µAAT NO
LOAD)
s
OUTPUT CURRENT UP TO 150mA
s
LOGIC CONTROLLED ELECTRONIC
SHUTDOWN
s
OUTPUT VOLTAGE OF 1.5, 1.8, 2.5, 2.8,
2.85,3,3.1,3.2,3.3,3.5,3.6,3.8,4, 4.7, 5V
s
INTERNAL CURRENT AND THERMAL LIMIT
s
AVAILABLE IN
± 1% TOLLERANCE (AT 25°C,
AVERSION)
s
LOW OUTPUT NOISE VOLTAGE 30
µVrms
s
SMALLEST PACKAGE SOT23-5L
s
TEMPERATURE RANGE: -40°C TO 125°C
DESCRIPTION
The LD2985 is a 150mA fixed output voltage
regulator. The ultra low drop voltage and the low
quiescent current make them particularly suitable
for low noise, low power applications, and in
battery
powered
systems.
In
sleep
mode
quiescent current is less than 1µA when INHIBIT
pin is pulled low. Shutdown Logic Control Function
is available on pin 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.
An external capacitor, CBYP=10nF, connected
between bypass pin and GND
reduce the noise
to 30µVrms.
Typical application are in cellular phone, palmtop
laptop computer, personal digital assistant (PDA),
personal stereo, camcorder and camera.
LD2985
SERIES
VERY LOW DROP AND LOW NOISE VOLTAGE REGULATOR
LOW ESR CAP. COMPATIBLE, WITH INHIBIT FUNCTION
SCHEMATIC DIAGRAM
SOT23-5L


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