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| 型号： | TL431AW5-7 |
| 厂商： | Diodes Inc |
| 文件页数： | 3/14页 |
| 文件大小： | 0K |
| 描述： | IC VREF SHUNT PREC ADJ SOT25 |
| 标准包装： | 1 |
| 基准类型： | 旁路，可调节，精度 |
| 输出电压： | 2.495 V ~ 36 V |
| 容差： | ±1% |
| 输入电压： | 高达 36V |
| 通道数： | 1 |
| 电流 - 阴极： | 1mA |
| 电流 - 输出： | 100mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-25 |
| 包装： | 标准包装 |
| 其它名称： | TL431AW5-7DIDKR |
TL431/TL432
ADJUSTABLE PRECISION SHUNT REGULATOR
Electrical Characteristics (T A = +25°C, unless otherwise noted)
Symbol
Parameter
Test Conditions
Min
Typ.
Max
Unit
T A = 0 to 70 C
T A = -40 to +85 C
T A = -40 to +125 C
V REF
V DEV
Reference voltage
Deviation of reference voltage over
full temperature range (Note 5)
V KA = V REF ,
I KA = 10mA
V KA = V REF ,
I KA = 10mA
TL431A
TL431B
o
o
o
2.470
2.482
2.495
2.495
6
14
14
2.520
2.507
16
34
34
V
mV
Δ V REF
Ratio of the change in reference
V KA = 10V to V REF
-1.4
-2.7
Δ V KA
voltage to the change in cathode
voltage
I KA = 10mA
V KA = 36V to 10V
-1
-2
mV/V
I REF
Reference input current
I KA = 10mA, R1 = 10K ? , R2 = ∞
1
4
μA
T A = 0 to 70 C
T A = -40 to +85 C
Δ I REF
I REF deviation over full temperature
range (Note 7)
I KA = 10mA,
R1 = 10K ? ,
R2 = ∞
o
o
T A = -40 to +125 o C
0.8
0.8
0.8
1.2
2.5
2.5
μA
I KA(MIN)
I KA(OFF)
| Z KA |
Minimum cathode current for
regulation
Off-state current
Dynamic output impedance (Note 8)
V KA = V REF
V KA = 36V, V REF = 0V
V KA = V REF, f = 0Hz
0.4
0.05
0.2
0.7
0.5
0.5
mA
μA
?
SOT23
380
θ JA
Thermal Resistance Junction to
Ambient
SOT25
250
o
C/W
SO-8*
70
Notes:
7. Deviation of V DEV , and Δ I REF are defined as the maximum variation of the values over the full temperature range.
The average temperature coefficient of the reference input voltage α V REF is defined as:
Vmax
V DEV
X 10 6
α V REF =
V REF @ 25oC
T2 – T1
ppm/oC
Vmin
Where:
T2 – T1 = full temperature change.
α V REF can be positive or negative depending on whether the slope is
positive or negative.
Notes: 8. The dynamic output impedance, R Z , is defined as:
V DEV = Vmax - Vmin
Z KA =
Δ V KA
Δ I KA
T1
Temperature
T2
When the device is programmed with two external resistors R1 and R2, the dynamic output
impedance of the overall circuit, is defined as:
Z’ =
Δ V
Δ I
≈ Z KA
1+
R1
R2
TL431 *SO-8 is a future package
Document number: DS35044 Rev. 6 - 2
3 of 14
April 2012
? Diodes Incorporated
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