- 您现在的位置：买卖IC网 > PDF目录69490 > TL431AQDBVRQ1 (TEXAS INSTRUMENTS INC) 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.495 V, PDSO5 PDF资料下载
参数资料
| 型号： | TL431AQDBVRQ1 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 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, PDSO5 |
| 封装： | PLASTIC, SOT-23, 5 PIN |
| 文件页数： | 17/22页 |
| 文件大小： | 523K |
| 代理商： | TL431AQDBVRQ1 |
TL431-Q1
ADJUSTABLE PRECISION SHUNT REGULATOR
SGLS302C MARCH 2005 REVISED APRIL 2008
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise
noted)
PARAMETER
TEST
TEST CONDITIONS
TL431BQ
UNIT
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Vref
Reference voltage
2
VKA = Vref, IKA = 10 mA
2483
2495
2507
mV
VI(dev)
Deviation of reference voltage
over full temperature range
(see Figure 1)
2
VKA = Vref, IKA = 10 mA,
TA = 40°C to 125°C
14
34
mV
DV
ref
Ratio of change in reference voltage
3
IKA = 10 mA
VKA = 10 V Vref
1.4
2.7
mV
DV
ref
DV
KA
Ratio of change in reference voltage
to the change in cathode voltage
3
IKA = 10 mA
VKA = 36 V 10 V
1
2
mV
V
Iref
Reference current
3
IKA = 10 mA, R1 = 10 k, R2 = ∞
2
4
A
II(dev)
Deviation of reference current
over full temperature range
(see Figure 1)
3
IKA = 10 mA, R1 = 10 k, R2 = ∞,
TA = 40°C to 125°C
0.8
2.5
A
Imin
Minimum cathode current
for regulation
2
VKA = Vref
0.4
0.7
mA
Ioff
Off-state cathode current
4
VKA = 36 V, Vref = 0
0.1
0.5
A
|zKA|
Dynamic impedance (see Figure 1)
1
IKA = 1 mA to 100 mA, VKA = Vref,
f
≤ 1 kHz
0.2
0.5
The deviation parameters, Vref(dev) and Iref(dev), are defined as the differences between the maximum and minimum
values obtained over the recommended temperature range. The average full-range temperature coefficient of the
reference voltage,
αVref, is defined as:
where:
TA is the recommended operating free-air temperature range of the device.
can be positive or negative, depending on whether minimum Vref or maximum Vref, respectively, occurs at the
lower temperature.
Example: maximum Vref = 2496 mV at 30°C, minimum Vref = 2492 mV at 0°C, Vref = 2495 mV at 25°C,
TA = 70°C for TL431
Because minimum Vref occurs at the lower temperature, the coefficient is positive.
Calculating Dynamic Impedance
The dynamic impedance is defined as:
When the device is operating with two external resistors (see Figure 3), the total dynamic impedance of the circuit
is given by:
Maximum Vref
Minimum Vref
TA
VI(dev)
a
V
ref
ppm
°C +
V
I(dev)
V
ref
at 25
°C
106
DT
A
a
V
ref
+
4mV
2495 mV
106
70
°C
[
23 ppm
°C
|z
KA|
+
DV
KA
DI
KA
|z |
+ DV
DI [
|z
KA|
1
) R1
R2
aV
ref
Figure 1. Calculating Deviation Parameters and Dynamic Impedance
相关PDF资料 |
PDF描述 |
|---|---|
| TL431BIPK | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, PSSO3 |
| TL431CDM-TR | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, PDSO8 |
| TL431CPK | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.5 V, PSSO3 |
| TL431BIDM-TR | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, PDSO8 |
| TL431BCPK | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, PSSO3 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TL431AQDBVT | 功能描述:基准电压& 基准电流 Adjustable Precision Shunt Regulator 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 |
| TL431AQDBVTE4 | 功能描述:基准电压& 基准电流 Adjustable Precision Shunt Regulator 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 |
| TL431AQDBVTG4 | 功能描述:基准电压& 基准电流 Adjustable Precision Shunt Regulator 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 |
| TL431AQDBZR | 功能描述:基准电压& 基准电流 Adjustable Precision Shunt Regulator 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 |
| TL431AQDBZR,215 | 功能描述:基准电压& 基准电流 TL431BIDBZR/SOT 31IDBZR/SOT2 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 |
发布紧急采购，3分钟左右您将得到回复。