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TL431AのメーカーはAnalog Intergrations Corporationです、この部品の機能は「Adjustable Precision Shunt Regulators」です。 |
部品番号 | TL431A |
| |
部品説明 | Adjustable Precision Shunt Regulators | ||
メーカ | Analog Intergrations Corporation | ||
ロゴ | |||
このページの下部にプレビューとTL431Aダウンロード(pdfファイル)リンクがあります。 Total 11 pages
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 TEST CIRCUITS
IN
IL
IREF
VREF
VZ
IZ
AIC431
Fig. 1 Test Circuit for VZ=VREF
IN
IL
VZ
R1
IREF AIC431
IZ
R2 VREF
Note: VZ=VREF(1+R1/R2)+IREFxR1
Fig. 2 Test circuit for VZ>VREF
IN
VZ
AIC431
IZ(OFF)
Fig. 3 Test circuit for off-state Current
n ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise specified.)
PARAMETER
Reference Voltage
Deviation of Reference
Input Voltage Over
Temperature (Note 3)
Ratio of the Change in Refer-
ence Voltage to
the Change in Cathode volt-
age
Reference Input Current
TEST CONDITIONS
VZ=VREF,
AIC431
IL =10mA (Fig. 1) TL431A
TL431
VZ = VREF , IL =10mA,
Ta = 0°C~ +85°C (Fig. 1)
IZ=10mA
∆VZ=10V-VREF
(Fig. 2)
∆VZ=30V-10V
R1 =10KΩ, R2=∞,
IL =10mA (Fig. 2)
SYMBOL MIN.
2.482
VREF
2.470
2.455
VDEV
∆VREF
∆VZ
IREF
TYP.
2.495
2.495
2.495
9.0
-0.5
-0.35
0.8
MAX.
2.508
2.520
2.535
UNIT
V
20 mV
-2.0 mV/V
-1.5 mV/V
3.5 µA
3
3Pages AIC431/TL431A/TL431
n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0.75
0.70
-40
Reference Input Current vs Temperature
R1=10KΩ
R2=∞
IZ=10mA
-20 0
20 40 60 80 100 120
Temperature (°C)
Dynamic Impedance vs Temperature
0.28
0.24
VZ=VREF
0.20 IZ=1mA to100mA
F <1KHz
0.16
0.12
0.08
0.04
0.00
-40
-20
0 20 40 60 80
Temperature (°C)
100 120
Change in Reference Voltage vs Cathode Voltage
0
-1
IZ =10mA
-2 TA =25°C
-3
-4
-5
-6
0 5 10 15 2 0 25 3 0 35 40
Cathode Voltage (V)
Small Signal Voltage Amplification vs Frequency
80
70 IZ =10mA
60 TA=25°C
50
40 Av
30
20
10
0
-1010
100
1k
10k 100k 1 M
10M
Frequency (Hz)
Off-State Cathode Current vs Temperature
2.5
2.0
VREF=0V
1.5 VZ=30V
1.0
0.5
0.0
-40
-20
0 20 40 60 80
Temperature (°C)
100 120
47µF
R1
10K
+
VIN
CIN AIC431
Output
R
250
V1
Test Circuit For Frequency Response
6
6 Page | |||
ページ | 合計 : 11 ページ | ||
|
PDF ダウンロード | [ TL431A データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
TL431 | ADJUSTABLE PRECISION SHUNT REGULATOR | Diodes |
TL431 | PROGRAMMABLE PRECISION REFERENCES | Motorola Semiconductors |
TL431 | PROGRAMMABLE PRECISION REFERENCES | ON Semiconductor |
TL431 | PROGRAMMABLE VOLTAGE REFERENCE | STMicroelectronics |