shunt regulator. TL431M Datasheet


TL431M regulator. Datasheet pdf. Equivalent


TL431M


Precision adjustable shunt regulator
TL431M
Rev.F Apr.-2017
 / Descriptions SOT-23  Precision adjustable shunt regulator in a SOT-23 Plastic Package.

DATA SHEET

 / Features  2.495V; 0.5%,1% 2%; 1.0mA~100mA;;  VO=Vref~36V;(:50μA);(: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.
 / Applications  Linear regulators, adjustable power supply, switching power supply.
 / Equivalent Circuit

 / Pinning
3

1 2
PIN1:R

PIN 2:K

PIN 3:A

 / hFE Classifications & Marking

Marking...



TL431M
TL431M
Rev.F Apr.-2017
描述 / Descriptions
SOT-23 塑封封装精密可调基准电源。
Precision adjustable shunt regulator in a SOT-23 Plastic Package.
DATA SHEET
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,1.0mA100mA;quick turn-on; adjustable Output voltage, VO=Vref36V;low
operational cathode current,50μA typical; 0.15typical 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 / Equivalent Circuit
引脚排列 / Pinning
3
1
2
PIN1R
PIN 2K
PIN 3A
放大及印章代码 / hFE Classifications & Marking
Marking
H431
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TL431M
TL431M
Rev.F Apr.-2017
DATA SHEET
极限参数 / Absolute Maximum Ratings(Ta=25)
参数
Parameter
Cathode to Anode Voltage
Cathode Current Range, Continuous
Reference Input Current Range, Continuous
Power Dissipation
Operating Ambient Temperature
Junction Temperature
Storage Temperature Range
符号
Symbol
VKA
IK
IREF
PD
Tamb
Tj
Tstg
数值
Rating
37
-100+100
0.05+10
370
-40125
150
-65150
单位
Unit
V
mA
mA
mW
电性能参数 / Electrical Characteristics(Ta=25)
参数
Parameter
Reference Input Voltage
Deviation of Reference
Input Voltage Over-
Temperature
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
Off-state cathode current
Dynamic Impedance
符号
Symbol
VREF
VREF
/T
VREF
/VKA
IREF
IREF/T
IK(min)
IK(off)
|ZKA|
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=-40125
IK=10mA,
VKA =10V to VREF
IK=10mA,
VKA =36V to 10V
IK=10mA R1=10K
R2=open
IK=10mA R1=10K
R2=open
TA=-40125
VKA=VREF
最小值
Min
2.483
2.470
2.445
典型值
Typ
2.495
2.495
2.495
4.5
-1
-0.5
0.8
0.4
0.05
最大值
Max
2.507
2.520
2.545
25
-2.7
-2.0
1.0
1.2
0.08
单位
Unit
V
V
V
mV
mV/V
mV/V
μA
μA
mA
VKA=36V VREF=0V
VKA=VREF f1.0KHz
IK=1mA to 100mA
0.05 1.0 μA
0.15 0.5
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