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參數資料
| 型號： | US431LCZ |
| 廠商： | Unisem Group |
| 英文描述： | LOW -VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR |
| 中文描述： | 低電壓調節(jié)精密并聯穩(wěn)壓器 |
| 文件頁數： | 1/6頁 |
| 文件大?。?/td> | 37K |
| 代理商： | US431LCZ |
US431L/431AL
2-1
Rev. 1.2
5/11/98
TYPICAL APPLICATION
DESCRIPTION
The US431L product is a 3 terminal adjustable shunt
regulator that can also be used as a precision voltage
reference. Its output voltage may be set to any value
between Vref(1.24V) and 6V with two external resistors
as shown in the typical application circuit. Other appli-
cations of this device include the use as a merged am-
plifier and reference in applications such as Linear regu-
lator or as the secondary side controller in low voltage
power supply applications. The US431L only requires
80uA maximum quiescent current before regulating,
making it ideal as a voltage reference for battery type
applications.
LOW -VOLTAGE ADJUSTABLE
PRECISION SHUNT REGULATOR
PRELIMINARY DATASHEET
FEATURES
SOT23-5 package
0.5% Voltage Reference Initial Accuracy
(US431AL)
Low Operational Cathode Current
(80 uA max)
Unconditionally Stable with only 1uF
Adjustable Output from 1.24V to 6V
0.25
Typical Output Impedance
Pin to Pin Compatible with TLV431
APPLICATIONS
Precision Voltage Reference
Linear Regulator Controller
Secondary Side Controller for the Low Voltage
Power Supply Applications
PACKAGE ORDER INFORMATION
Ta (
°
C) 5 LEAD
SOT23-5
0 TO 70 US431LCL US431LCZ US431LCS
0 TO 70 US431ALCL US431ALCZ US431ALCS
3 PIN PLASTIC 8 PIN PLASTIC
TO-92 SOIC
431app1-1.0
R2
Co
R1
US431
V
R
B
IN
V
O
Typical application of the US431L as a shunt regulator / voltage reference.
Vo
Vref
R
R
=
×
+
1
1
2
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