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参数资料
| 型号： | TL431AF |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.495 V, PSSO3 |
| 封装： | SOT-89, 3 PIN |
| 文件页数： | 3/6页 |
| 文件大小： | 73K |
| 代理商： | TL431AF |
2008. 7. 3
3/6
TL431 Series
Revision No : 0
Input
FIGURE 1-TEST CIRCUIT FOR VKA = Vref
off
I
KA
V
Input
FIGURE 3-TEST CIRCUIT FOR I off
FIGURE 2-TEST CIRCUIT FOR VKA > Vref
IK
VKA
Input
R1
R2
Iref
VKA = Vref ( 1+
) + Iref R1
R1
R2
Max.
Min.
T1
T2
AMBIENT TEMPERATURE
-
Vref (Min.)
Ta = T2 - T1
Vref
Vref = Vref (Max.)
Vref
Example :
Vref = 8.0mV and slope is positive,
Vref at 25 =2.495V,
Ta=70
0.008
10
6
Vref =
= 45.8 ppm/
70
(2.495)
Note 2: The dynamic impedance Zka is defined as:
VKA
|Zka| =
Ik
When the device is programmed with two external
resistors, R1 and R2, (refer to Figure 2) the total
dynamic impedance of the circuit is defined as:
R1
|Zka’| = |Zka| (1+
)
R2
Note 1:
The deviation parameter
Vref is defined as the differences
between the maximum and minimum values obtained over the
full operating ambient temperature range that applies.
The average temperature coefficient of the Reference
input voltage,
Vref , is defined as:
Vref
(
)
10
6
ppm
Vref at 25
Vref (
) =
Ta
Vref
10
6
=
Ta(Vref at 25 )
Vref can be positive or negative depending on whether
Vref Min. or Vref Max. occurs at the lower ambient temperature.
相关PDF资料 |
PDF描述 |
|---|---|
| TL431F | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.495 V, PSSO3 |
| TL431BLP-BP | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.5 V, BCY3 |
| TL431ID | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.495 V, PDSO8 |
| TL431ILP | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.495 V, PBCY3 |
| TL431LPTR2 | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.495 V, PBCY3 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TL431-AF5-R | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:PROGRAMMABLE PRECISION REFERENCE |
| TL431AFDT | 制造商:NXP Semiconductors 功能描述:VREG 1% 2.495V 36V 3SOT23 制造商:NXP Semiconductors 功能描述:VREG, 1%, 2.495V, 36V, 3SOT23 |
| TL431AFDT,215 | 功能描述:基准电压& 基准电流 2.495 VIN ADJ Shunt RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| TL431AFDT.215 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Adjustable precision shunt regulator |
| TL431AFDT215 | 制造商:NXP Semiconductors 功能描述: |
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