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L1085S3G 반도체 회로 부품 판매점

3A Adjustable Low Dropout Linear Regulator



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Niko-Sem
L1085S3G 데이터시트, 핀배열, 회로
NIKO-SEM
3A Adjustable Low Dropout
Linear Regulator (LDO)
L1085XG
TO-252,263,220
Lead-Free
GENERAL DESCRIPTION
The L1085G is a positive and low dropout
three-terminal voltage regulator with 3A out-
put current capability. This device is design-
ed for use in low voltage applications that
offers lower dropout voltage and faster tran-
sient response.
This device is fully protected against over
current faults, over temperature operation,
reversed input polarity, reversed lead insert-
ion, transient voltage spike …etc.
On-Chips trimming the reference voltage to
1% and features the low dropout of maxi-
mum 1.45 volts.
The L1085G Series regulators are available
in the popular industry standard TO-220
TO-263 and TO-252 packages.
FEATURES
z Very easy to use, it requires only two
external resistors to set the output voltage
z Low dropout voltage:
1.3V typical at up to 3A
z Low ground current
z Fast transient response
z Current & thermal limiting
z Line regulation: 0.5% typical
z Load regulation: 0.5% typical
z TO-220, TO-263 and TO-252 packages
APPLICATIONS
z High current microprocessor supplies
z Low voltage logic supply
z Powering VGA & sound card
z Portable instrumentation
z Constant current regulator
z Post regulator for switching power supply
TYPICAL APPLICATION
Vin
Cin
10uF
+
L1085
IN OUT
ADJ Vref
Iadj
Vout
R1
Cout
+
10uF
R2
Vo = Vref (1+R2/R1) + Iadj x R2
1. Cin needed if device is far from from filter capacitors.
2. Cout required for stability.
- Basic Adjustable Regulator Circuit -
1
JUL-15-2004
Free Datasheet http://www.Datasheet4U.com


L1085S3G 데이터시트, 핀배열, 회로
NIKO-SEM
3A Adjustable Low Dropout
Linear Regulator (LDO)
L1085XG
TO-252,263,220
Lead-Free
ABSOLUTE MAXIMUM RATINGS
z Maximum Supply Voltage
z Power Dissipation
z Thermal Resistance
Junction to Case, θJC
z Thermal Resistance
Junction to Ambient, θJA
TO-263
TO-252
TO-220
7V
Internally
Limited
5 °C/W
60 °C/W
70 °C/W
50 °C/W
z Operating Junction
Temperature Range
z Storage Temperature
Range
z Lead Temperature
(Soldering, 10 Seconds)
0 to 125 °C
-40 to 150 °C
260 °C
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, TA = 25 °C.)
Parameter
Symbol
Test Conditions
Typical
Reference Voltage VREF VIN = 5V, IOUT = 10mA
Dropout Voltage
Line Regulation
Load Regulation
Minimum Load
Current
Adjust Pin Current
Current Limit
VD ΔVREF = 1%, IOUT = 3A
REG(LINE) (VOUT + 1.5V) VIN 7V, IOUT = 10mA
REG(LOAD) (VIN -VOUT) = 3V, 10mA IOUT 3A
IO 1.5V (VIN -VOUT) 5.75V
IADJ
ICL VIN - VOUT = 2V
RMS Output Noise VN
Ripple Rejection
Ratio
RA
f = 120Hz, CADJ = 22µF for ADJ pin,
VIN = 5V, IOUT = 3A
1.25V
1.3V
0.5%
0.5%
10mA
55µA
5.0A
0.003%
of VOUT
72dB
Limits
1.23VMin
1.27VMax
1.45V
2%
2.5%
100µA
4.0A (Min)
60dB (Min)
DEVICE SELECTION GUIDE
Device
L1085DG
L1085SG
L1085S3G
L1085TG
Package
Marking
TO-252
L1085DG
TO-263 (2-Lead) TO-263 (3-Lead)
L1085SG
L1085S3G
TO-220
L1085TG
Orders for parts with Lead-Free plating can be placed using the LXXXXXG parts name.
2 JUL-15-2004
Free Datasheet http://www.Datasheet4U.com




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L1085S3G

3A Adjustable Low Dropout Linear Regulator - Niko-Sem