Datasheet 搜索 > ST Microelectronics（意法半导体） > LD1117D33C 数据手册 > LD1117D33C 其他数据使用手册 1/19 页
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LD1117D33C 其他数据使用手册 - ST Microelectronics（意法半导体）
制造商:
ST Microelectronics（意法半导体）
封装:
SOP
描述:
低压降固定和可调正电压调节器 LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
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LD1117D33C数据手册
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LD1117
SERIES
LOW DROP FIXED AND ADJUSTABLE
POSITIVE VOLTAGE REGULATORS
March 2001
BLOCKDIAGRAM
TO-252 (DPAK) TO-220
SO-8SOT-223
■ LOWDROPOUTVOLTAGE(1V TYP)
■ 2.85VDEVICE PERFORMANCESARE
SUITABLEFORSCSI-2ACTIVE
TERMINATION
■ OUTPUTCURRENT UP TO800mA
■
FIXED OUTPUTVOLTAGE OF:1.8V,2.5V,
2.85V,3.0V,3.3V,5.0V
■ ADJUSTABLEVERSIONAVAILABILITY
(V
ref
=1.25V)
■ INTERNALCURRENT AND THERMAL LIMIT
■ AVAILABLEIN ± 1% (AT25
o
C) AND2% IN
FULLTEMPERATURE RANGE
■ SUPPLYVOLTAGEREJECTION: 75 dB (TYP)
■ TEMPERATURERANGE: 0
o
C TO125
o
C
DESCRIPTION
The LD1117 is a LOW DROP Voltage Regulator
able to provide up to 800mA of Output Current,
available even in adjustable version
(V
ref
=1.25V). Concerning fixed versions, are
offered the following Output Voltages: 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
and TO-220. The SOT-223 and DPAK surface
mount packages optimize the thermal
characteristics even offering a relevant space
saving effect. High efficency 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
o
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.
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