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LD1117DT33TR 数据手册 - ST Microelectronics（意法半导体）
制造商:
ST Microelectronics（意法半导体）
分类:
稳压芯片
封装:
TO-252-3
描述:
STMICROELECTRONICS LD1117DT33TR 固定电压稳压器, LDO, 5.3V至15V, 1.1V压差, 3.3V输出, 950mA输出, TO-252-3
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LD1117DT33TR数据手册
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1/28July 2005
■ LOW DROPOUT VOLTAGE (1V TYP.)
■ 2.85V DEVICE PERFORMANCES ARE
SUITABLE FOR SCSI-2 ACTIVE
TERMINATION
■ OUTPUT CURRENT UP TO 800 mA
■ FIXED OUTPUT VOLTAGE OF: 1.2V, 1.8V,
2.5V, 2.85V, 3.0V, 3.3V, 5.0V
■ ADJUSTABLE VERSION AVAILABILITY
(V
rel
=1.25V)
■ INTERNAL CURRENT AND THERMAL LIMIT
■ AVAILABLE IN ± 1% (AT 25°C) AND 2% IN
FULL TEMPERATURE RANGE
■ SUPPLY VOLTAGE REJECTION: 75dB (TYP.)
DESCRIPTION
The LD1117 is a LOW DROP Voltage Regulator
able to provide up to 800mA 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,
3.0V 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, SO-8, TO-220 and
TO-220FM. The SOT-223 and DPAK surface
mount packages optimize the thermal
characteristics even offering a relevant space
saving effect. High efficiency is assured by NPN
pass transistor. In fact in this case, unlike than
PNP one, the Quiescent Current flows mostly into
the load. Only a very common 10µF minimum
capacitor is needed for stability. On chip trimming
allows the regulator to reach a very tight output
voltage tolerance, within ± 1% at 25°C. The
ADJUSTABLE LD1117 is pin to pin compatible
with the other standard. Adjustable voltage
regulators maintaining the better performances in
terms of Drop and Tolerance.
LD1117
SERIES
LOW DROP FIXED AND ADJUSTABLE
POSITIVE VOLTAGE REGULATORS
Figure 1: Block Diagram
SOT-223DPAK
TO-220FM
SO-8
TO-220
Rev. 17
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