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TLV431A-Q1 PDF预览

TLV431A-Q1

更新时间： 2024-01-02 02:05:40
品牌 Logo 应用领域
德州仪器 - TI 稳压器
页数 文件大小 规格书
21页 489K
描述
LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS

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TLV431A-Q1 数据手册

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SLVS905 − DECEMBER 2008  
D
D
D
D
Qualified for Automotive Applications  
Low-Voltage Operation: V = 1.24 V  
D
D
D
Low Operational Cathode Current :80 µA Typ  
0.25-Ω Typical Output Impedance  
See TLVH431 and TLVH432 for  
REF  
Adjustable Output Voltage, V = V  
to 6 V  
O
REF  
− Wider V  
(1.24 V to 18 V) and I (80 mA)  
KA  
K
Reference Voltage Tolerances at 255C  
− Additional SOT-89 Package  
− Multiple Pinouts for SOT-23-3 and SOT-89  
Packages  
− 0.5% for TLV431B  
− 1% for TLV431A  
D
Typical Temperature Drift: 11 mV  
DBV (SOT-23-5) PACKAGE  
(TOP VIEW)  
DBZ (SOT-23-3) PACKAGE  
(TOP VIEW)  
1
1
2
3
5
4
REF  
NC  
*
CATHODE  
ANODE  
REF  
3
ANODE  
2
CATHODE  
NC − No internal connection  
* For TLV431A: NC − No internal connection  
* For TLV431B: Pin 2 is attached to Substrate and must  
be connected to ANODE or left open.  
description/ordering information  
The TLV431 is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over  
applicable industrial and commercial temperature ranges. Output voltage can be set to any value between V  
REF  
(1.24 V) and 6 V with two external resistors (see Figure 2). These devices operate from a lower voltage (1.24 V)  
than the widely used TL431 and TL1431 shunt-regulator references.  
When used with an optocoupler, the TLV431 is an ideal voltage reference in isolated feedback circuits for 3-V  
to 3.3-V switching-mode power supplies. These devices have a typical output impedance of 0.25 Ω. Active  
output circuitry provides a very sharp turn-on characteristic, making them excellent replacements for  
low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.  
ORDERING INFORMATION  
255C V  
ORDERABLE  
PART NUMBER  
TOP-SIDE  
MARKING  
REF  
†
PACKAGE  
T
J
TOLERANCE  
SOT-23-5 (DBV)  
SOT-23-3 (DBZ)  
SOT-23-5 (DBV)  
Reel of 3000  
Reel of 3000  
Reel of 3000  
TLV431BQDBVRQ1 VOMQ  
TLV431BQDBZRQ1 VOQQ  
TLV431AQDBVRQ1 VONQ  
0.5%  
1%  
−40°C to 125°C  
†
‡
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see  
the TI web site at http://www.ti.com.  
Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
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Copyright 2008, Texas Instruments Incorporated  
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...21

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TLV431A-Q1 替代型号

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