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LD2980 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. LD2980
Description  VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT LOW ESR OUTPUT CAPACITORS COMPATIBLE
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LD2980 Datasheet(HTML) 1 Page - STMicroelectronics

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September 2003
s
STABLE WITH LOW ESR CERAMIC
CAPACITORS
s
ULTRA LOW DROPOUT VOLTAGE (0.12V
TYP. AT 50mA LOAD, 7mV TYP. AT 1mA
LOAD)
s
VERY LOW QUIESCENT CURRENT (80µA
TYP. AT NO LOAD IN ON MODE; MAX 1µA
IN OFF MODE)
s
GUARANTEED OUTPUT CURRENT UP TO
50mA
s
LOGIC-CONTROLLED ELECTRONIC
SHUTDOWN
s
OUTPUT VOLTAGE OF 1.5; 1.8; 2.5; 2.85;
3.0; 3.2; 3.3; 3.6; 3.8; 4.0; 4.7; 4.85; 5.0V
s
INTERNAL CURRENT AND THERMAL LIMIT
s
± 0.5% TOLERANCE OUTPUT VOLTAGE
AVAILABLE (A VERSION)
s
OUTPUT LOW NOISE VOLTAGE 160µVRMS
s
TEMPERATURE RANGE: -40 TO 125°C
s
SMALLEST PACKAGE SOT23-5L AND
SOT-89
s
FAST DYNAMIC RESPONSE TO LINE AND
LOAD CHANGES
DESCRIPTION
The LD2980 series are 50mA fixed-output voltage
regulator. The low drop-voltage and the ultra low
quiescent current make them suitable for low
noise, low power applications and in battery
powered systems.
The quiescent current in sleep mode is less than
1µA when INHIBIT pin is pulled low. Shutdown
Logic Control function is available on pin n.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 capacitor. Typical
applications are in cellular phone, palmtop/laptop
computer,
personal
digital
assistant
(PDA),
personal stereo, camcorder and camera.
LD2980
SERIES
ULTRA LOW DROP VOLTAGE REGULATORS WITH INHIBIT
LOW ESR OUTPUT CAPACITORS COMPATIBLE
SCHEMATIC DIAGRAM
SOT23-5L
SOT-89


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