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LT1431IS8#PBF

Description
V-Ref Adjustable 2.5V to 36V 100mA 8-Pin SOIC N Tube
CategoryVoltage reference   
File Size214KB,14 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LT1431IS8#PBF Overview

V-Ref Adjustable 2.5V to 36V 100mA 8-Pin SOIC N Tube

LT1431IS8#PBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
Reference TypeAdjustable
TopologyShunt
Initial Accuracy0.4%
Maximum Temperature Coefficient30ppm/°C(Typ)
Output Voltage (V)2.5 to 36
Maximum Input Voltage (V)36
Maximum Output Current (mA)100
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeIndustrial
PackagingTube
Pin Count8
Standard Package NameSOP
Supplier PackageSOIC N
MountingSurface Mount
Package Height1.5(Max)
Package Length5(Max)
Package Width3.99(Max)
PCB changed8
Lead ShapeGull-wing
LT1431
Programmable Reference
FeaTures
n
n
n
n
n
n
DescripTion
The LT
®
1431 is an adjustable shunt voltage regulator
with 100mA sink capability, 0.4% initial reference voltage
tolerance and 0.3% typical temperature stability. On-chip
divider resistors allow the LT1431 to be configured as a
5V shunt regulator, with 1% initial voltage tolerance and
requiring no additional external components. By adding
two external resistors, the output voltage may be set to
any value between 2.5V and 36V. The nominal internal
current limit of 100mA may be decreased by including
one external resistor.
A simplified 3-pin version, the LT1431CZ/LT1431IZ, is
available for applications as an adjustable reference and
is pin compatible with the TL431.
Guaranteed 0.4% Initial Voltage Tolerance
0.1Ω Typical Dynamic Output Impedance
Fast Turn-On
Sink Current Capability, 1mA to 100mA
Low Reference Pin Current
Available in J8, N8, S8 or 3-Lead TO-92 Z Packages
applicaTions
n
n
n
Linear Regulators
Adjustable Power Supplies
Switching Power Supplies
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
Typical applicaTion
Isolated 5V Regulator
+
+
SWITCHING
REGULATOR
5V
V
IN
V
REF
vs Temperature
2.5025
2.5000
V
REF
(V)
5V
R
TOP
V
+
COMP
COLL
2.4975
2.4950
2.4925
REF
+
2.5V
LT1431
GND-S
GND-F
LT1431 TA01
g
m
=
4mA/V
2.4900
2.4875
–50 –25
R
MID
50
25
75
0
TEMPERATURE (°C)
100
125
LT1431 TA01b
1431fe
1
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