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July 2007 Rev 2 1/9
9
TS821
1.225V micropower shunt voltage reference
Features
■ 1.225V typical output voltage
■ Ultra low operating current: 45μA maximum at
25°C
■ High precision @ 25°C
– +/- 2% (standard version)
– +/- 1% (A grade)
– +/- 0.5% (B grade)
■ High stability when used with capacitive loads
■ Industrial temperature range: -40°C to +85°C
■ 120ppm/°C maximum temperature coefficient
Applications
■ Computers
■ Instrumentation
■ Battery chargers
■ Switch mode power supply
■ Battery operated equipment
Description
The TS821 is a low power shunt voltage reference
providing a stable 1.225V output voltage over the
industrial temperature range (-40°C to +85°C).
Availabe in SOT23-3 surface mount package, it
can be designed in applications where space
saving is critical.
The low operating current is a key advantage for
power restricted designs. In addition, the TS821 is
very stable and can be used in a broad range of
application conditions.
L
SOT23-3L
(Plastic micropackage)
Pin connections
(Top view)
www.st.com
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