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LM1086S-AD View Datasheet(PDF) - Unspecified

Part Name
Description
Manufacturer
LM1086S-AD Datasheet PDF : 2 Pages
1 2
1.5A LOW DROPOUT VOLTAGE REGULATOR (Adjustable & Fixed) LM1086
FEATURES
● Low Dropout Voltage 500mV at 1.5A 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-in
SOT-223 PKG (FRONT VIEW)
1
2
3
PIN FUNCTION
1. Adj/Gnd
2. Vout
3. Vin
TO-263 (D2 PKG, FRONT VIEW)
APPLICATIONS
● Battery Charger
● Adjustable Power Supplies
● Constant Current Regulators
● Portable Instrumentation
PIN FUNCTION
1. Adj/Gnd
2. Vout
3. Vin
● High Efficiency Linear Power Supplies
● High Efficiency "Green" Computer Systems
● SMPS Post-Regulator
● Power PC Supplies
123
● Powering VGA & Sound Card
ORDERING INFORMATION
Device & Marking
Package
LM1086S-XX
SOT 223
LM1086T-XX
TO263 (D2)
DESCRIPTION
(XX=Vout=1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 5.0V
Adjustable= AD)
The LM1086 is a low dropout three terminal regulator with 1.5A 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
VIN
5V
+
C1
10㎌
3
2
LM1086
1 ADJ
VREF
RF1
124Ω
1%
RF2
205Ω
1%
VOUT
3.33V
C2
10㎌
VREF=VOUT-VADJ=1.25V(Typ.)
VOUT=VREFx(1+RF2/RF1)+IADJxRF2
IADJ=55㎂(Typ.)
(1) C1 Needed if device is far away
from filter capacitors.
(2) C2 Required for stability
Adjustable Voltage Regulator
HTC
1
 

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