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TL431 반도체 회로 부품 판매점

PRECISION PROGRAMMABLE REFERENCES



LinFinity 로고
LinFinity
TL431 데이터시트, 핀배열, 회로
THE IN F I N I T E POWER OF INNOVATION
TL431/TL431A/TL431B
PRECISION PROGRAMMABLE REFERENCES
PRODUCTION DATA SHEET
DESCRIPTION
The TL431/TL431A/TL431B series
precision adjustable three terminal shunt
voltage regulators are pin-to-pin
compatible with the industry standard
TL431. The output voltage of this
reference is programmable by using two
external resistors from 2.5V to 36V.
These devices offer low output
impedance for improved load regulation.
The typical output impedance of these
devices is 200m. These devices find
application in the feedback path of
switching power supplies, OVP
crowbar circuits, reference for A/D,
D/A, and as zener diodes with
improved turn-on characteristics.
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.
PRODUCT HIGHLIGHT
PRECISION PROGRAMMABLE REFERENCES
KEY FEATURES
W INITIAL VOLTAGE REFERENCE ACCURACY OF
0.4% (TL431B)
W SINK CURRENT CAPABILITY 1mA to 100mA
W TYPICAL OUTPUT DYNAMIC IMPEDANCE
LESS THAN 200m;
TYPICAL OUTPUT IMPEDANCE OF THE
TL431B LESS THAN 100m
W ADJUSTABLE OUTPUT VOLTAGE FROM 2.5V
TO 36V
W AVAILABLE IN SURFACE-MOUNT PACKAGES
W LOW OUTPUT NOISE
W TYPICAL EQUIVALENT FULL RANGE
TEMPERATURE COEFFICIENT OF 30ppm/°C
W DIRECT PIN-TO-PIN REPLACEMENT FOR
INDUSTRY STANDARD TL431 AND TL1431
VIN
TL431/A
& TL431B
VOUT
R1
VO = 1 +
R1
R2
* VREF
R2
Copyright © 1999
Rev. 1.3 9/99
PACKAGE ORDER INFORMATION
TA (°C)
Initial
Tolerance
DM
Plastic
8-pin
SOIC
LP
Plastic
3-pin
TO-92
0 to 70
-40 to 85
2%
1%
0.4%
2%
1%
0.4%
TL431CDM
TL431ACDM
TL431BCDM
TL431IDM
TL431AIDM
TL431BIDM
TL431CLP
TL431ACLP
TL431BCLP
TL431ILP
TL431AILP
TL431BILP
Note: All surface-mount packages are available in Tape & Reel.
Append the letter "T" to part number. (i.e. TL431CDMT)
TO-92 (LP) package also available in ammo-pack.
LINFINITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
1


TL431 데이터시트, 핀배열, 회로
PRODUCT DATABOOK 1996/1997
TL431/TL431A/TL431B
PRECISION PROGRAMMABLE REFERENCES
PRODUCTION DATA SHEET
A B S O L U T E M A X I M U M R AT I N G S (Note 1)
Cathode to Anode Voltage (VKA) (Note 2) .................................................... -0.3V to 37V
Reference Input Current (IREF) ................................................................... -50µA to 10mA
Continuous Cathode Current (IK) ......................................................... -100mA to 150mA
Operating Junction Temperature
Plastic (DM, LP Packages) .................................................................................... 150°C
Storage Temperature Range ...................................................................... -65°C to 150°C
Lead Temperature ..................................................................................................... 300°C
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with respect
to Ground. Currents are positive into, negative out of the specified terminal. Pin
numbers refer to DIL packages only.
Note 2. Voltage values are with respect to the anode terminal unless otherwise noted.
THERMAL DATA
DM PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
LP PACKAGE:
165°C/W
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
156°C/W
Junction Temperature Calculation: TJ = TA + (PD x θJA).
The θJA numbers are guidelines for the thermal performance of the device/pc-board system.
All of the above assume no ambient airflow
BLOCK DIAGRAM
Cathode (K)
PACKAGE PIN OUTS
CATHODE
N.C.
ANODE
N.C.
18
27
36
45
REF
ANODE
ANODE
N.C.
DM PACKAGE
(Top View)
1. CATHODE
2. ANODE
3. REF
LP PACKAGE
(Top View)
Ref (R)
VREF
Anode (A)
2 Copyright © 1999
Rev. 1.3 9/99




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