LD1117AD2MTR| Datasheet

LD1117AD2MTR, LD1117ADT-R, LD1117ADT-TR, LD1117ADT12TR, LD1117ADT18TR, LD1117ADT25TR, LD1117ADT28TR, LD1117ADT33TR, LD1117ADT50TR, LD1117AS12TR, LD1117AS18TR, LD1117AS25TR, LD1117AS28TR, LD1117AS33TR, LD1117AS50TR, LD1117AST-R, LD1117ASTR, LD1117AV, LD1117AV18, LD1117AV25, LD1117AV28, LD1117AV33, LD1117AV50, LD1117AXX, LD1117AXX12, LD1117AXX18, LD1117AXX25, LD1117AXX28, LD1117AXX33, LD1117AXX50

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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 uF 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 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 10uF 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.
DPAK D2PAK/A SOT-223 TO-220

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).

Block diagram

June 2007

Rev. 19

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