SMC431 Datasheet, PDF (1/11 Pages) Sangdest Microelectronic (Nanjing) Co., Ltd – Fast Turn-On Response

SMC431
TL431
TL431A
Technical Data
Adjustable Precision Shunt Regulator
Data Sheet N1595 Rev. -
Description:
The SMC431, TL431A and TL431 are 3-terminal adjustable precision shunt regulators with guaranteed
temperature stability over the applicable extended commercial temperature range. The output voltage
may be set at any level greater than 2.495V (VREF) up to 30V merely by selecting two external resistors
that act as a voltage divider network. These devices have a typical output impedance of 0.08Ω. Active
output circuitry provides a very sharp turn-on characteristic, making these devices excellent improved
replacements for zener diodes in many applications. The precise ±0.5% reference voltage tolerance of
the SMC431 makes it possible in many applications to avoid the use of a variable resistor,
consequently saving cost and eliminating drift and reliability problems associated with it.
Features:
• Precision Reference Voltage.
SMC431 : 2.495V ±0.5%
TL431A : 2.495V ±1.0%
TL431 : 2.495V ±1.6%
• Sink Current Capability: 200mA.
• Minimum Cathode Current for Regulation: 250μA.
• Equivalent Full-Range Temperature Coefficient: 50 ppm/℃.
• Fast Turn-On Response.
• Low Dynamic Output Impedance: 0.08Ω.
• Adjustable Output Voltage.
• Low Output Noise.
• Space Saving Packages: SOT-23
Applications:
• Linear Regulators.
• Adjustable Supplies.
• Switching Power Supplies.
• Battery Operated Computers.
• Instrumentation.
• Computer Disk Drivers.
Typical application circuit:
• China - Germany - Korea - Singapore - United States •
• http://www.smc-diodes.com - sales@ smc-diodes.com •