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LR1117 の電気的特性と機能

LR1117のメーカーはLRCです、この部品の機能は「LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS」です。


製品の詳細 ( Datasheet PDF )

部品番号 LR1117
部品説明 LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
メーカ LRC
ロゴ LRC ロゴ 




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LR1117 Datasheet, LR1117 PDF,ピン配置, 機能
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 ±1% at 25°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.
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
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*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 ±1%(at 25°C) and 2% in all temperature range
*Supply voltage rejection: 75dB (TYP)
*Temperature range: 0°C to 125°C
1
23
2
1
3
TO-252
TO-220
3 21
SOT-223
1: GND 2: Output 3: Input
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
DC Input Voltage
VIN
Power Dissipation
Ptot
Storage temperature
Tstg
Operating Junction Temperature
Top
Thermal Resistance Junction
ambien
Rthj-amb
VALUE
15
12
-65 ~ +150
0 ~ +125
50
UNIT
V
W
qC
qC
°C/W
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

1 Page





LR1117 pdf, ピン配列
LRC
LESHAN RADIO COMPANY,LTD.
LR1117/A-2.5 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125qC, Co=10PF unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
Output Voltage
Vo Vin=4.5V, Io=10mA, Tj=25qC f1%
f%
Output Voltage
Vo Io=0 to 800/1000mA,
f%
Vin=3.9 to 10V
f%
Line Regulation
'Vo Vin=3.9 to 10V, Io=0mA
Load Regulation
'Vo Vin=3.9V, Io=0 to 800/1000mA
Temperature stability
'Vo
Long Term Stability
'Vo 1000 hrs, Tj=125qC
Operating Input Voltage
Vin Io=100mA
Quiescent Current
Id Vind10V
Output Current
Io Vin=7.5V, Tj=25qC
Output Noise Voltage
eN B=10Hz to 10KHz, Tj=25qC
Supply Voltage
SVR Io=40mA, f=120Hz, Tj=25qC, Vin=5.5V,
Rejection
Vripple=1Vpp
Dropout Voltage
Vd Io=100mA
Io=500mA
Io=800mA
Io=1000mA
Thermal Regulation
Ta=25qC, 30ms Pulse
MIN.
2.475
2.450
2.450
2.400
800
60
TYP.
2.500
2.500
1
1
0.5
0.3
5
950
100
75
1.00
1.05
1.10
1.15
0.01
MAX.
2.525
2.550
2.550
2.600
6
10
15
10
1200
1.10
1.15
1.20
1.25
0.10
UNIT
V
V
V
V
mV
mV
%
%
V
mA
mA
PV
dB
V
V
V
V
%/W
LR1117/A-2.85 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125qC, Co=10PF unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN.
Output Voltage
Vo Vin=4.85V, Io=10mA, Tj=25qC
2.82
Output Voltage
Vo Io=0 to 800/1000mA,Vin=4.25 to 10V 2.79
Line Regulation
'Vo Vin=4.25 to 10V, Io=0mA
Load Regulation
'Vo Vin=4.25V, Io=0 to 800/1000mA
Temperature stability
'Vo
Long Term Stability
'Vo 1000 hrs, Tj=125qC
Operating Input Voltage
Vin Io=100mA
Quiescent Current
Id Vind10V
Output Current
Io Vin=7.85V, Tj=25qC
800
Output Noise Voltage
eN B=10Hz to 10KHz, Tj=25qC
Supply Voltage
SVR Io=40mA, f=120Hz, Tj=25qC, Vin=5.85V, 60
Rejection
Vripple=1Vpp
Dropout Voltage
Vd Io=100mA
Io=500mA
Io=800mA
Io=1000mA
Thermal Regulation
Ta=25qC, 30ms Pulse
TYP.
2.85
1
1
0.5
0.3
5
950
100
75
1.00
1.05
1.10
1.15
0.01
MAX.
2.88
2.91
6
10
15
10
1200
1.10
1.15
1.20
1.25
0.10
UNIT
V
V
mV
mV
%
%
V
mA
mA
PV
DB
V
V
V
V
%/W
3/10


3Pages


LR1117 電子部品, 半導体
LRC
LESHAN RADIO COMPANY,LTD.
LR1117/A-ADJUSTABLE ELECTRICAL CHARACTERISTICS
(refer to the test circuits, Tj=0 to 125qC, Co=10PF unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN.
Reference Voltage
Vref Vin-VO=2V, Io=10mA, Tj=25qC
1.238
Reference Voltage
Vref Io=10 to 800/1000mA, Vin-Vo=1.4 to 1.225
10V
Line Regulation
'Vo Vin-Vo=1.5 to 13.75V, Io=10mA
Load Regulation
'Vo Vin-Vo=3V, Io=10 to 800/1000mA
Temperature stability
'Vo
Long Term Stability
'Vo 1000 hrs, Tj=125qC
Operating Input Voltage
Vin
Adjustment Pin Current
Iadj Vind15V
Adjustment Pin Current
'Iadj Vin-Vo=1.4 to 10V,
Change
Io=10 to 800/1000mA
Minimum Load Current Io(min) Vin=15V
Output Current
Io Vin-Vo=5V, Tj=25qC
800
Output Noise (%Vo)
eN B=10Hz to 10KHz, Tj=25qC
Supply Voltage
SVR Io=40mA, f=120Hz, Tj=25qC,
60
Rejection
Vin-Vo=3V, Vripple=1Vpp
Dropout Voltage
Vd Io=100mA
Io=500mA
Io=800mA
Io=1000mA
Thermal Regulation
Ta=25qC, 30ms Pulse
TYP.
1.25
0.035
0.10
0.50
0.3
60
1
2
950
0.003
75
1.00
1.05
1.10
1.15
0.01
MAX.
1.262
1.275
0.200
0.400
15
120
5
5
1200
1.10
1.15
1.20
1.25
0.10
UNIT
V
V
%
%
%
%
V
PA
PA
mA
mA
%
dB
V
V
V
V
%/W
TYPICAL APPLICATIONS
Input 3 LR1117
10 +
mF
1
2 Output
+ 10
mF
Input 3 LR1117
10 +
mF
1
2 Output
+ 10
mF
Fig 1. Fixed Output Regulator
Fig 2. Adjustable Output Regulator
110 W
3
10 +
mF
LR1117
1
2 110 W
+ 22 110 W
mF
18 to 27
Lines
4.75 V
to
5.25 V
+
110 W
Fig 3. Active SCSI Bus Terminator
6/10

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