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LM1085 Datasheet Preview

LM1085 Datasheet

3A L.D.O. VOLTAGE REGULATOR

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3A L.D.O. VOLTAGE REGULATOR (Adjustable & Fixed)
LM1085
FEATURES
Output Current of 3A
Fast Transient Response
0.04% Line Regulation
0.2% Load Regulation
Internal Thermal and Current Limiting
Adjustable or Fixed Output Voltage(1.5V, 1.8V, 2.5V, 3.3V, 5.0V)
Surface Mount Package TO-263 3LD & TO-252 3L
100% Thermal Limit Burn-in
Low Dropout Voltage 1.5V at 3A Output Current
Moisture Sensitivity Level 3
TO-263 PKG
TO-252 PKG
APPLICATIONS
High Efficiency Linear Regulators / Power Supply
High Efficiency "Green" Computer Systems
Constant Current Regulators
Portable Instrumentation
SMPS Post-Regulator
Adjustable Power Supplies
Powering VGA & Sound Card
1. ADJ / GND 2. OUTPUT 3. INPUT
* Heatsink surface connected to Pin 2.
ORDERING INFORMATION
Device
Package
LM1085R-X.X
TO-263 3LD
LM1085RS-X.X
TO-252 3LD
(X.X=VOUT=1.5V, 1.8V, 2.5V, 3.3V, 5.0V, ADJ)
DESCRIPTION
The LM1085 series of positive adjustable and fixed regulators are designed to provide 3A with high efficient.
All internal circuitry is designed to operate down to 1.5V input to output differential.
On-chip trimming adjusts the reference voltage to 1%.
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
LM1085-3.3V
LM1085-ADJ
Note
(1) C1 needed if device is far away from filter capacitors.
(2) C2 minimum value required for stability
VREF=VOUT-VADJ=1.25V(Typ.)
IADJ=55(Typ.)
VOUT = VREF x (1+RF2/RF1) + IADJ x RF2
Nov. 2010-Rev. 1.4
-1-
HTC




HTC

LM1085 Datasheet Preview

LM1085 Datasheet

3A L.D.O. VOLTAGE REGULATOR

No Preview Available !

3A L.D.O. VOLTAGE REGULATOR (Adjustable & Fixed)
BLOCK DIAGRAM
LM1085
ABSOULTE MAXIMUM RATINGS
CHARACTERISTIC
Supply Voltage
Operating Temperature Range
Junction Temperarture
Storage Temperature Range
Thermal Resistance Junction to Case TO-263
Thermal Resistance Junction to Ambient TO-263
Lead Temperature (Soldering) 10 sec.
Maximum Output Current
SYMBOL
VIN
TA
TJ
Tstg
Tjc
Tja
Tsol
Imax
VALUE
12
-10 ~ 70
0 ~ 125
-65 ~ 150
3
60
300
3
UNIT
V
C/W
C/W
A
HTC
-2-


Part Number LM1085
Description 3A L.D.O. VOLTAGE REGULATOR
Maker HTC
Total Page 8 Pages
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