|
US431L Datasheet, PDF (1/6 Pages) UNISEM – LOW -VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR | |||
|
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
US431L/431AL
LOW -VOLTAGE ADJUSTABLE
PRECISION SHUNT REGULATOR
PRELIMINARY DATASHEET
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.
TYPICAL APPLICATION
RB
V IN
US431
Vo = Vref à ï£ï£¬1+ RR21
431app1-1.0
VO
R1
Co
R2
Typical application of the US431L as a shunt regulator / voltage reference.
PACKAGE ORDER INFORMATION
Ta (°C)
0 TO 70
0 TO 70
5 LEAD
SOT23-5
US431LCL
US431ALCL
Rev. 1.2
5/11/98
3 PIN PLASTIC
TO-92
US431LCZ
US431ALCZ
8 PIN PLASTIC
SOIC
US431LCS
US431ALCS
2-1
|
▷ |