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LD1117ASTR Fiches technique(PDF) 1 Page - STMicroelectronics

No de pièce LD1117ASTR
Description  Low drop fixed and adjustable positive voltage regulators
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LD1117ASTR Fiches technique(HTML) 1 Page - STMicroelectronics

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This is information on a product in full production.
July 2013
DocID7194 Rev 26
1/24
LD1117A
Low drop fixed and adjustable positive voltage regulators
Datasheet
- production data
Features
• Low dropout voltage:
– 1.15 V typ. @ IOUT = 1 A, 25 °C
• Very low quiescent current:
– 5 mA typ. @ 25 °C
• Output current up to 1 A
• Fixed output voltage of:
– 1.2 V, 1.8 V, 3.3 V
• Adjustable version availability (VREF = 1.25 V)
• 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:
– 80 dB 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 1 A of output current, available
also in adjustable versions (VREF = 1.25 V). In
fixed versions, the following output voltages are
offered: 1.2 V, 1.8 V, and 3.3 V. The device is
supplied in: SOT-223, DPAK and TO-220. Surface
mounted packages optimize the thermal
characteristics while offering a relevant space
saving advantage. High efficiency is assured by
an NPN pass transistor. Only a very common 10
µF minimum capacitor is needed for stability. Chip
trimming allows the regulator to reach a very tight
output voltage tolerance, within ± 2% at 25 °C.
TO-220
SOT-223
DPAK
Table 1. Device summary
Order codes
Output voltage
SOT-223
DPAK
TO-220
LD1117AS12TR
LD1117ADT12TR
1.2 V
LD1117AS18TR
LD1117ADT18TR
1.8 V
LD1117AS33TR
LD1117ADT33TR
LD1117AV33
3.3 V
LD1117ASTR
LD1117ADT-TR
Adjustable from 1.25 V
www.st.com


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