LM1084S-5.0资料

5A LOW DROPOUT VOLTAGE REGULATOR (Adjustable & Fixed)

FEATURES● Low Dropout Voltage 500mV at 5A Output Current● Fast Transient Response● 0.015% Line Regulation● 0.1% Load Regulation● Internal Thermal and Current Limiting● Adjustable or Fixed Output Voltage(1.5, 2.5, 2.85, 3.0, 3.3, 5.0V)● Surface Mount Package SOT-223 & TO-263 (D2 Package)● 100% Thermal Limit Burn-inLM1084

SOT-223 PKG (FRONT VIEW) 1 2 3PIN FUNCTION1. Adj/Gnd2. Vout3. VinTO-263 (D2 PKG, FRONT VIEW)APPLICATIONS● Battery Charger● Adjustable Power Supplies● Constant Current Regulators● Portable Instrumentation● High Efficiency Linear Power Supplies● High Efficiency \"Green\" Computer Systems● SMPS Post-Regulator● Power PC Supplies● Powering VGA & Sound Card

PIN FUNCTION 1. Adj/Gnd 2. Vout 3. Vin1 2 3ORDERING INFORMATION

Device & MarkingLM1084S-XXLM1084T-XX

PackageSOT 223TO263 (D2)

DESCRIPTION

(XX=Vout=1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 5.0V

Adjustable= AD)

The LM1084 is a low dropout three terminal regulator with 5A output current capability.

The output voltage is adjustable with the use of a resistor divider. Dropout is guaranteed at a maximumof 500 mV at maximum output current.

It's low dropout voltage and fast transient response make it ideal for low voltage microprocessor applications. Internal current and thermal limiting provides protection against any overload conditionthat would create excessive junction temperature.

TEST & TYPICAL APPLICATION CIRCUIT

VIN5V+C110㎌RF2205Ω1%32LM10841ADJVREFRF1124Ω1%VOUT3.33VVREF=VOUT-VADJ=1.25V(Typ.)VOUT=VREFx(1+RF2/RF1)+IADJxRF2IADJ=55㎂(Typ.)C210㎌(1) C1 Needed if device is far away from filter capacitors.(2) C2 Required for stabilityAdjustable Voltage RegulatorHTC

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5A LOW DROPOUT VOLTAGE REGULATOR(ADJ)

ABSOULTE MAXIMUM RATINS

CHARACTERISTICSupply Voltage

Operating Junction Temperature RangeStorage Temperature Range

Thermal Resistance Junction to Case TO-263Thermal Resistance Junction to Ambient TO-263Lead Temperature (Soldering) 10 sec.Maximum Output Current

SYMBOLVinToprTstgTjcTjaTsolImax

VALUE70~125-65~150

3603005

LM1084

UNITV℃℃C/WC/W℃A

ELECTRICAL CHARACTERISTICS I

PARAMETER

1.5V Version Output Voltage 2.5V Version Output Voltage 2.85V Version Output Voltage 3.0V Version Output Voltage 3.3V Version Output Voltage 5.0V Version Output Voltage All Voltage Options Reference Voltage (VREF) Min. Load Current(Note 3) Line Regulation (ΔVREF(VIN)) Load Regulation (ΔVREF(VOUT)) Dropout Voltage Current Limit IOUT(MAX) Long Term Stability Thermal Regulation (ΔVOUT(Pwr)) Output Noise, RMS Thermal Resistance

OUT=100㎃, TA=25℃, unless otherwise specified

TEST CONDITIONSMINTYPMAXUNIT

000000≤IOUT≤5A, 6.5V≤VIN<12V4.9255.08V

VIN≤7V,P≤PMAX

VOUT)≤5.75V, 10㎃≤IOUT≤5A 1.5V≤(VIN- 1.5V≤(VIN-VOUT)≤5.75V

2.75V≤VIN≤7V, IOUT=10㎃, TJ=25℃ 10㎃≤IOUT≤5A,(VIN-VOUT)=3V,TJ=25℃ ΔVREF=1% , Iout=5A Vin-Vout=3V

1.4V≤(VIN-VOUT) Adjustable Only TA=125℃, 1000Hrs TA=25℃, 30㎳ pulse 10Hz to 10Khz TA=25℃ Junction to Tab Junction to Ambient

1.231.235

1.251.2550.040.080.45

1.271.265100.20.40.5

VmA%%VA

5.56.80.30.003

1

%%/W%/Vo

0.003

360

℃/W

HTC

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