SPX3431 Datasheet, PDF (1/5 Pages) Sipex Corporation – Micropower 2.5V Precision Adjustable Shunt Regulator

FEATURES
• Voltage Tolerance ..................................0.5% & 1.0%
• Wide Operating Current .................... 1mA to 100mA
• Extended Temperature Range .......................... 105°C
• Low Temperature Coefficient ........................30 ppm/°C
• Offered in SOT-23, TO-92 & SOT 89
• Low Output Noise
SPX3431
Micropower 2.5V Precision
Adjustable Shunt Regulator
APPLICATIONS
• Battery Operating Equipment
• Adjustable Supplies
• Switching Power Supplies
• Error Amplifiers
• Single Supply Amplifier
• Monitors / VCR / TV
• Personal Computers
PRODUCT DESCRIPTION
The SPX3431 is a 3-terminal Adjustable Shunt Voltage Regulator providing a highly accurate 0.5% bandgap reference. SPX3431 acts
as an open-loop error amplifier with a 2.5V temperature compensation reference. The SPX3431 thermal stability, wide operating
current (100mA) and temperature range (0°C to 105°C) makes it suitable for all variety of applications that are looking for a low cost
solution with high performance. SPX3431 tolerance of 0.5% is proven to be sufficient to overcome all the other errors in the
system to virtually eliminate the need for trimming in the power supply manufactures assembly line and contribute a big Cost
Savings.
In the standard shunt configuration, the combination of low temperature coefficient (T.C.), sharp turn-on characteristics, low output
impedance and programmable output voltage make this precision reference an excellent error amplifier.
The SPX3431 is a direct replacement for the SPX431 and TL431 in low voltage, low current applications. SPX3431 is also available
in SOT-89 and TO-92.
PIN CONNECTIONS
TO-92 (N)
12 3
SOT-23
Marking & pinout for
the 0.5% device
ANODE
SPX3431
CATHODE
REF
ANODE
Top View
CATHODE REF
Top View
SOT-23
Marking & pinout for
the 1% device
ANODE
SOT-89
Marking &
pinout for all
devices
SPX3432
CATHODE REF
Top View
SPX3431
1
23
CATHODE
REF
ANODE
Top View
Rev. 10/25/00