TL431
Rev.F Mar.-2016
描述
/
DATA SHEET
Descriptions
TO-92 塑封封装精密可调基准电源。
Precision adjustable shunt regulator in a TO-92 Plastic Package.
特征
/ Features
精确参照电压 2.495V;允许电压误差为 0.5%,1%或 2%;阴极电流能力为 1.0mA~100mA;快速导通;可
调节输出电压为 VO=Vref~36V;阴极工作电流低(典型值:50μA);动态输出阻抗低(典型值:0.15Ω)。
Precise reference voltage to 2.495V;guaranteed 0.5%,1% or 2% reference voltage Tolerance; sink
current capability,1.0mA ~ 100mA;quick turn-on; adjustable Output voltage, VO=Vref ~ 36V;low
operational cathode current,50μA typical; 0.15Ω typical output impedance.
用途
/
Applications
用于线性调整器,可调节电源和开关电源。
Linear regulators, adjustable power supply, switching power supply.
内部等效电路
引脚排列
12
3
PIN1:K
印章代码
/ Equivalent Circuit
/ Pinning
PIN 2:A
PIN 3:R
/ Marking
见印章说明。See Marking Instructions
http://www.fsbrec.com
1/7
TL431
Rev.F Mar.-2016
极限参数
/
DATA SHEET
Absolute Maximum Ratings(Ta=25℃)
参数
Parameter
符号
Symbol
数值
Rating
单位
Unit
VKA
37
V
IK
-100~+100
mA
Reference Input Current Range, Continuous
IREF
0.05~+10
mA
Power Dissipation
PD
770
mW
Tamb
-40~125
℃
Tj
150
℃
Tstg
-65~150
℃
Cathode to Anode Voltage
Cathode Current Range, Continuous
Operating Ambient Temperature
Junction Temperature
Storage Temperature Range
电性能参数
/ Electrical Characteristics(Ta=25℃)
参数
Parameter
Reference Input Voltage
Deviation of Reference
Input Voltage OverTemperature
Ratio of Change in
Reference Input Voltage
to the Change in Cathode
Voltage
Reference Input current
Deviation of Reference
Input Current Over Full
Temperature Range
Minimum Cathode Current
for Regulation
符号
Symbol
VREF
△VREF
/△T
△VREF
/△VKA
IREF
△IREF/
△T
测试条件
Test Conditions
VKA=VREF
IK=10mA(A=0.5%)
VKA=VREF
IK=10mA(B=1%)
VKA=VREF
IK=10mA(2%)
VKA=VREF
IK=10mA
TA=-40~125℃
IK=10mA,
△VKA =10V to VREF
IK=10mA,
△VKA =36V to 10V
R1=10KΩ
IK=10mA
R2=open
IK=10mA
R1=10KΩ,
R2=open
TA=-40~125℃
IK(min)
VKA=VREF
Off-state cathode current
IK(off)
VKA=36V
Dynamic impedance
|ZKA|
VKA=VREF
f≤1.0KHz
IK=1mA to 100mA
http://www.fsbrec.com
VREF=0V
最小值
Min
典型值
Typ
最大值
Max
单位
Unit
2.483
2.495
2.507
V
2.470
2.495
2.520
V
2.445
2.495
2.545
V
4.5
25
mV
-1
-2.7
mV/V
-0.5
-2.0
mV/V
0.8
1.0
μA
0.4
1.2
μA
0.05
0.08
mA
0.05
1.0
μA
0.15
0.5
Ω
2/7
TL431
Rev.F Mar.-2016
电参数曲线图
DATA SHEET
/ Electrical Characteristic Curve
http://www.fsbrec.com
3/7
TL431
Rev.F Mar.-2016
DATA SHEET
测试电路图&典型应用图 Test circuits&Typical Application
BLOCK DIAGRAM:
TL431
TEST CIRCUITS:
TL431
TL431
Test Circuit For VKA=VREF
Test Circuit for VKA≥VREF
TL431
Test Circuit For IKA(OFF)
TYPICAL APPLICATION:
Shutdown Regulator
Higher-current Shunt
Io=VREF/RCL+IKA
IN
RCL
OUT
TL431
Constant Current Source
http://www.fsbrec.com
Series Pass Regulator
4/7
TL431
Rev.F Mar.-2016
外形尺寸图
DATA SHEET
/ Package Dimensions
http://www.fsbrec.com
5/7
TL431
Rev.F Mar.-2016
印章说明
/
DATA SHEET
Marking Instructions
BR
TL431
A ****
说明:
BR:
为公司代码
TL431:
为产品型号
A:
为 hFE 分档代码
****:
为生产批号代码,随生产批号变化。
Note:
BR:
Company Code.
TL431:
Product Type.
A:
hFE Classifications Symbol
****:
Lot No. Code, code change with Lot No.
http://www.fsbrec.com
6/7
TL431
Rev.F Mar.-2016
DATA SHEET
波峰焊温度曲线图(无铅)
/
Temperature Profile for Dip Soldering(Pb-Free)
说明:
Note:
1、预热温度 25~150℃,时间 60~90sec;
1.Preheating:25~150℃, Time:60~90sec.
2、峰值温度 255±5℃,时间持续为 5±0.5sec;
2.Peak Temp.:255±5℃, Duration:5±0.5sec.
3、焊接制程冷却速度为 2~10℃/sec.
3. Cooling Speed: 2~10℃/sec.
耐焊接热试验条件
/
温度:270±5℃
包装规格
散件包装
Time:10±1 sec
Units 包装数量
Units/Bag
只/袋
Bags/Inner Box
袋/盒
Units/Inner Box
只/盒
Dimension
Inner Boxes/Outer Box
盒/箱
Units/Outer Box
只/箱
Bag 袋
包装尺寸
Inner Box 盒
(unit:mm3)
Outer Box 箱
1,000
10
10,000
5
50,000
135×190
237×172×102
560×245×195
1,000
10
10,000
10
100,000
135×190
237×172×102
560×245×375
Units/tape
只/纸带
Tape/Inner Box
纸带/盒
Rows/Inner Box
纸带层/盒
Inner Boxes/Outer Box
盒/箱
Units/Outer Box
只/箱
Inner Box 盒
3,000
1
120
10
30,000
328×230×42
/ AMMO
Package Type
封装形式
使用说明
Temp:270±5℃
/ BULK
TO-92
TO-92
时间:10±1 sec.
/ Packaging SPEC.
Package Type
封装形式
编带包装
Resistance to Soldering Heat Test Conditions
Units 包装数量
Dimension
包装尺寸
(unit:mm3)
Outer Box 箱
小箱 480×346×235,
大箱 547×407×268
/ Notices
http://www.fsbrec.com
7/7
很抱歉,暂时无法提供与“TL431-A”相匹配的价格&库存,您可以联系我们找货
免费人工找货