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LR1117 Datasheet

  • LR1117

  • LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS

  • 10頁

  • LRC

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LRC
LESHAN RADIO COMPANY,LTD.
LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
DESCRIPTION
The LRC LR1117/A is a LOW DROP Voltage Regulator
able to provide up to 0.8/1.0A of Output Current, available
even in adjustable version (Vref=1.25V). Concerning fixed
versions, are offered the following Output Voltages: 1.5V,
1.8V, 2.5V, 2.85V, 3.0V, 3.3V, 3.6V and 5.0V. The 2.85V type
is ideal for SCSI-2 lines active termination. High efficiency
is assured by NPN pass transistor. In fact in the case, unlike
than PNP one, the Quiescent Current flows mostly into the
for stability. On chip trimming allows the regulator to reach a
very tight output voltage tolerance, within 鹵1% at 25擄C. The
ADJUSTABLE LR1117/A is pin to pin compatible with the
other standard Adjustable voltage regulators maintaining the
better performances in terms of Drop and Tolerance.
1
23
TO-220
1
2
1
3
TO-252
32
SOT-223
FEATURES
*Low dropout voltage (1V Typ.)
*2.85V device performances are suitable for SCSI-2 active
termination
*Output current up to 0.8/1.0A
*Fixed output voltage of: 1.5V, 1.8V, 2.5V, 2,85V, 3.0V, 3.3V,
*
3.6V, 5.0V
*Adjustable version availability (Vref=1.25V)
*Internal current and thermal limit
*Available in 鹵1%(at 25擄C) and 2% in all temperature range
*Supply voltage rejection: 75dB (TYP)
*Temperature range: 0擄C to 125擄C
1: GND
2: Output
3: Input
ABSOLUTE MAXIMUM RATINGS
PARAMETER
DC Input Voltage
Power Dissipation
Storage temperature
Operating Junction Temperature
SYMBOL
V
IN
Ptot
Tstg
Top
VALUE
15
12
-65 ~ +150
0 ~ +125
50
UNIT
V
W
C
C
擄C/W
Thermal Resistance Junction
ambien
Rthj-amb
Note: Absolute Maximum Ratings are those value beyond which damage to the device may occur. Functional
operation under there condition is not implied. Over the above suggested Max Power Dissipation a Short Circuit
could definitively damage the device.
1/10

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