|
|
PDF TL431A Data sheet ( Hoja de datos )
| Número de pieza | TL431A | |
| Descripción | Adjustable Precision Shunt Regulators | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TL431A (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
AIC431/TL431A/TL431
Adjustable Precision Shunt Regulators
n FEATURES
l Unconditionally Stable.
l Precision Reference Voltage.
AIC431 :2.495V ±0.5%
TL431A :2.495V ±1.0%
TL431 :2.495V ±1.6%
l Sink Current Capability: 200mA.
l Minimum Cathode Current for Regulation: 250µA.
l Equivalent Full-Range Temperature Coefficient:
50 ppm/°C.
l Fast Turn-On Response.
l Low Dynamic Output Impedance: 0.08Ω.
l Adjustable Output Voltage.
l Low Output Noise.
l Space Saving SOT-89, SOT-23, TO-92 and SO8
packages.
n TYPICAL APPLICATION CIRCUIT
VIN VOUT
+ R1 +
AIC431
R2
n DESCRIPTION
The AIC431/TL431A/TL431 are 3-terminal ad-
justable precision shunt regulators with guar-
anteed temperature stability over the applica-
ble extended commercial temperature range.
The output voltage may be set at any level
greater than 2.495V (VREF) up to 30V merely
by selecting two external resistors that act as
a voltage divider network. These devices have
a typical output impedance of 0.08Ω. Active
output circuitry provides a very sharp turn-on
characteristics, making these devices excel-
lent improved replacements for zener diodes
in many applications.
The precise ±0.5% reference voltage toler-
ance of the AIC431 makes it possible in
many applications to avoid the use of a vari-
able resistor, consequently saving cost and
eliminating drift and reliability problems asso-
ciated with it.
VOUT=(1+R1/R2)VREF
Precision Regulator
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-431-06 May 31, 01
TEL: 886-3-5772500 FAX: 886-3-5772510
www.analog.com.tw
1
1 page  
AIC431/TL431A/TL431
n ELECTRICAL CHARACTERISTICS (Continued)
PARAMETER
Minimum Cathode current for
Regulation
Off-State Current
Dynamic Output Impedance
(Note 4)
TEST CONDITIONS
VZ=VREF (Fig. 1)
VZ=20V, VREF =0V (Fig. 3)
VZ=VREF
Frequency= 0Hz (Fig. 1)
SYMBOL
IZ(MIN)
MIN.
TYP. MAX. UNIT
0.25 0.5 mA
IZ(OFF)
RZ
0.1 1.0 µA
0.08 0.3
Ω
VMAX
VMIN
VDEV = VMAX-VMIN
T1 TEMPERATURE
T2
Note 3. Deviation of reference input voltage, VDEV, is de-
fined as the maximum variation of the reference input
voltage over the full temperature range.
The average temperature coefficient of the reference in-
put voltage, αVREF is d efined as:
∆VREF ppm
=
±
VMAX-
VREF(at
VMIN
25°C)
106
=
±
VDEV
VREF(at 25°C)
106
°C T2 − T1
T2 − T1
Where:
T2−T1=full temperature change.
αVREF can be positive or negative depending on
whether the slope is positive or negative.
Example: VDEV= 9.0mV, VREF= 2495mV,
T2−T1= 70°C, slope is negative.
αVREF
=
9.0mV
2495mV
106
=
−50ppm/°C
70°C
Note 4. The dynamic output impedance, Rz, is de-
fined as:
RZ
=
∆VZ
∆IZ
When the device is programmed with two external re-
sistors, R1 and R2, (see Fig. 2), the dynamic output
impedance of the overall circuit, is defined as:
[ ]rz = ∆Vz ≅ Rz 1+R1
∆Iz R2
n TYPICAL PERFORMANCE CHARACTERISTICS
Cathode Current vs Cathode Voltage
1000
800 VZ =VREF
TA =25°C
600
IZ(MIN)
400
200
0
-200
-400
-600
-1.0 -0.5 0.0 0.5 1.0 1.5 2.0
Cathode Voltage (V)
2.5
3.0
2.58
2.56
2.54
2.52
2.50
2.48
2.46
2.44
2.42
2.40-40
Reference Voltage vs Temperature
VZ =VREF
IZ =10mA
VREF =2.535V
VREF =2.495V
VREF=2.455V
-20 0 20 40 60 8 0 100 120
Temperature (°C )
5
5 Page 
AIC431/TL431A/TL431
n PHYSICAL DIMENSIONS (Continued)
l SOT-89 (unit: mm)
D
D1
H
L
e
e1
l SOT-89 MARKING
Part No.
AIC431CX
TL431CX
TL431ACX
Marking
AC01B
AC02B
AC03B
E
B
A SYMBOL
CA
B
C
D
D1
E
e
e1
H
L
MIN MAX
1.40
1.60
0.36
0.48
0.35
0.44
4.40
4.60
1.62
1.83
2.29
2.60
1.50 (TYP.)
3.00 (TYP.)
3.94
4.25
0.89
1.20
l TO-92 (unit: mm)
A
D
LE
C
e1
SYMBOL
A
C
D
E
e1
L
MIN MAX
4.32
5.33
0.38 (TYP.)
4.40
5.20
3.17
4.20
1.27 (TYP.)
12.7
-
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet TL431A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TL431 | ADJUSTABLE PRECISION SHUNT REGULATOR |  Diodes |
| TL431 | PROGRAMMABLE PRECISION REFERENCES |  Motorola Semiconductors |
| TL431 | PROGRAMMABLE PRECISION REFERENCES |  ON Semiconductor |
| TL431 | PROGRAMMABLE VOLTAGE REFERENCE |  STMicroelectronics |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |