LM1084T-3.0 [ETC]
5A LOW DROPOUT VOLTAGE REGULATOR (Adjustable & Fixed); 5A低压差稳压器（可调和固定）
| 型号： | LM1084T-3.0 |
| 厂家： | 
ETC |
| 描述： | 5A LOW DROPOUT VOLTAGE REGULATOR (Adjustable & Fixed) |
| 文件： | 总2页 (文件大小：83K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
5A LOW DROPOUT VOLTAGE REGULATOR (Adjustable & Fixed)
LM1084
SOT-223 PKG (FRONT VIEW)
FEATURES
● Low Dropout Voltage 500mV at 5A Output Current
● Fast Transient Response
● 0.015% Line Regulation
PIN FUNCTION
1. Adj/Gnd
2. Vout
● 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-in
3. Vin
1
2
3
TO-263 (D2 PKG, FRONT VIEW)
APPLICATIONS
● Battery Charger
PIN FUNCTION
1. Adj/Gnd
2. Vout
● Adjustable Power Supplies
● Constant Current Regulators
● Portable Instrumentation
3. Vin
● High Efficiency Linear Power Supplies
● High Efficiency "Green" Computer Systems
● SMPS Post-Regulator
● Power PC Supplies
● Powering VGA & Sound Card
1
2
3
ORDERING INFORMATION
Device & Marking
LM1084S-XX
Package
SOT 223
LM1084T-XX
TO263 (D2)
(XX=Vout=1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 5.0V
DESCRIPTION
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 maximum
of 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 condition
that would create excessive junction temperature.
TEST & TYPICAL APPLICATION CIRCUIT
2
3
VIN
5V
VOUT
LM1084
3.33V
VREF=VOUT-VADJ=1.25V(Typ.)
VOUT=VREFx(1+RF2/RF1)+IADJxRF2
IADJ=55㎂(Typ.)
RF1
124Ω
1%
VREF
+
ADJ
1
C1
10㎌
C2
10㎌
RF2
205Ω
1%
(1) C1 Needed if device is far away
from filter capacitors.
(2) C2 Required for stability
Adjustable Voltage Regulator
HTC
1
5A LOW DROPOUT VOLTAGE REGULATOR(ADJ)
LM1084
ABSOULTE MAXIMUM RATINS
SYMBOL
VALUE
UNIT
V
CHARACTERISTIC
Vin
Topr
Tstg
Tjc
7
0~125
-65~150
3
Supply Voltage
℃
Operating Junction Temperature Range
Storage Temperature Range
℃
C/W
C/W
℃
Thermal Resistance Junction to Case TO-263
Thermal Resistance Junction to Ambient TO-263
Lead Temperature (Soldering) 10 sec.
Maximum Output Current
Tja
60
Tsol
Imax
300
5
A
ELECTRICAL CHARACTERISTICS I OUT=100㎃, TA=25℃, unless otherwise specified
PARAMETER
TEST CONDITIONS
MIN
1.475
2.46
TYP
1.5
2.5
2.85
3
MAX
UNIT
1.5V Version
0<IOUT<5A, 3.3V<VIN<10V
Output Voltage
2.5V Version
1.525
2.54
V
V
V
V
V
V
V
0<IOUT<5A, 4.0V<VIN<10V
0<IOUT<5A, 4.35V<VIN<10V
0<IOUT<5A, 4.5V<VIN<10V
0<IOUT<5A, 4.8V<VIN<10V
0≤IOUT≤5A, 6.5V≤VIN<12V
Output Voltage
2.85V Version
Output Voltage
3.0V Version
2.805
2.95
2.895
3.05
Output Voltage
3.3V Version
Output Voltage
5.0V Version
3.247
4.92
3.3
5
3.353
5.08
Output Voltage
All Voltage Options
VIN≤7V,P≤PMAX
1.23
1.25
1.25
5
1.27
1.265
10
Reference Voltage (VREF
)
1.5V≤(VIN-VOUT)≤5.75V, 10㎃≤IOUT≤5A
1.5V≤(VIN-VOUT)≤5.75V
1.235
mA
%
Min. Load Current(Note 3)
Line Regulation (ΔVREF(VIN))
Load Regulation (ΔVREF(VOUT))
Dropout Voltage
2.75V≤VIN≤7V, IOUT=10㎃, TJ=25℃
10㎃≤IOUT≤5A,(VIN-VOUT)=3V,TJ=25℃
ΔVREF=1% , Iout=5A
0.04
0.08
0.45
0.2
0.4
%
0.5
V
Vin-Vout=3V
Current Limit
5.5
6.8
0.3
A
1.4V≤(VIN-VOUT) Adjustable Only
IOUT(MAX)
TA=125℃, 1000Hrs
TA=25℃, 30㎳ pulse
Long Term Stability
1
%
Thermal Regulation
(ΔVOUT(Pwr))
0.003
%/W
%/Vo
℃/W
10Hz to 10Khz TA=25℃
Junction to Tab
0.003
Output Noise, RMS
3
Thermal Resistance
Junction to Ambient
60
HTC
2
相关型号：
LM1085
The LM1085 is a series of low dropout positive voltage regulators with a maximum dropout of 1.5V at 3A of load current.
TI
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