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TA76432FC(TE85L,F) PDF预览

TA76432FC(TE85L,F)

更新时间: 2023-06-15 00:00:00
品牌 Logo 应用领域
东芝 - TOSHIBA 光电二极管输出元件
页数 文件大小 规格书
13页 313K
描述
IC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 1.26 V, PDSO5, 0.95 MM PITCH, PLASTIC, SSOP-5, Voltage Reference

TA76432FC(TE85L,F) 数据手册

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TA76432FT/FC/F/FR/S  
Electrical Characteristics  
(Unless otherwise specified, Ta = 25°C, I = 5 mA)  
K
Characteristics  
Reference voltage  
Symbol  
Test Condition  
Min  
1.242  
Typ.  
1.26  
3
Max  
1.278  
15  
Unit  
V
V
V
= V  
KA REF  
REF  
REF (dev)  
Deviation of reference input voltage  
over temperature  
<
<
V
0°C Ta 85°C, V = V  
mV  
=
=
KA  
REF  
<
=
<
5 V  
Ratio of change in reference input  
voltage to the change in cathode  
voltage  
V
V
0.5  
0.3  
2
2.5  
2.0  
4
=
REF  
KA  
ΔV  
/ΔV  
REF  
mV/V  
<
<
5 V  
V
19 V  
=
=
KA  
Reference input current  
I
V
= V  
μA  
μA  
REF  
KA  
REF  
<
<
Deviation of reference input current  
over temperature  
0°C Ta 85°C, V = V  
,
=
=
KA  
REF  
I
0.3  
1.2  
REF (dev)  
R
= 10 kΩ, R = ∞  
2
1
Minimum cathode current for  
regulation  
I
V
= V  
0.2  
0.5  
1.0  
0.5  
mA  
μA  
Ω
Kmin  
KA  
REF  
= 19 V, V = 0 V  
REF  
Off-State cathode current  
Dynamic impedance  
I
V
V
Koff  
KA  
KA  
<
, f 1 kHz,  
=
= V  
REF  
Z  
KA  
0.2  
<
<
15 mA  
0.5 mA  
I
=
=
K
The deviation parameters VREF (dev) and IREF (dev) are defined as the maximum variation of the VREF and IREF over the  
rated temperature range.  
The average temperature coefficient of the V  
is defined as:  
REF  
V
REF  
max  
6
V
REF (dev)  
V
×10  
REF (dev)  
V
@25°C  
min  
REF  
αV  
=
(ppm °C  
)
REF  
ΔTa  
ΔTa  
Application Circuit Example  
Error amplification circuit for the switching power supply  
V
OUT  
Photo-  
coupler  
GND  
Shunt regulator  
This circuit amplifies the difference between the switching power supply’s secondary output voltage and the shunt  
regulator’s reference voltage. It then feeds the amplified voltage back to the primary input voltage via the  
photocoupler.  
5
2011-09-29  

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