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LD1117ADT25TR Datasheet(PDF) 1 Page - STMicroelectronics

No. de pieza LD1117ADT25TR
Descripción Electrónicos  LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LD1117ADT25TR Datasheet(HTML) 1 Page - STMicroelectronics

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January 2007
Rev. 17
1/27
27
LD1117A series
Low drop fixed and adjustable positive voltage regulators
Features
Low dropout voltage
(1.15V typ. @ IOUT = 1A, 25°C)
Very low quiescent current
(5 mA typ. @ 25°C)
Output current up to 1A
Fixed output voltage of: 1.2V, 1.8V, 2.5V,
2.85V, 3.3V, 5.0V
Adjustable version availability (Vrel = 1.25V)
Internal current and thermal limit
Only 10 µF for stability
Available in ± 2% (at 25°C) and 4% in full
temperature range
High supply voltage rejection:
– 80dB typ. at 25°C)
Temperature range: 0°C to 125°C
Description
The LD1117A is a LOW DROP Voltage Regulator
able to provide up to 1A of Output Current,
available even in adjustable version (Vref=1.25V).
Concerning fixed versions, are offered the
following Output Voltages: 1.2V, 1.8V, 2.5V, 2.85V,
3.3V and 5.0V. The 2.85V type is ideal for SCSI-2
lines active termination. The device is supplied in:
SOT-223, DPAK, D2PAK/A and TO-220. Surface
mount packages optimize the thermal
characteristics even offering a relevant space
saving effect. High efficiency is assured by NPN
pass transistor. Only a very common 10µF
minimum capacitor is needed for stability. Only
chip trimming allows the regulator to reach a very
tight output voltage tolerance, within ± 2% at
25°C.
SOT-223
D2PAK/A
TO-220
DPAK
www.st.com
Block diagram


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