器件名称: TL431BIDM
功能描述: PRECISION PROGRAMMABLE REFERENCES
文件大小: 210.34KB 共12页
简 介:TL431/TL431A/TL431B
PRECISION PROGRAMMABLE REFERENCES
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DESCRIPTION The TL431/TL431A/TL431B series precision adjustable three terminal shunt voltage regulators are pin-to-pin compatible with the industry standard TL431. The output voltage of this reference is programmable by using two external resistors from 2.5V to 36V. These devices offer low output impedance for improved load regulation. The typical output impedance of these devices is 200m. These devices find application in the feedback path of switching power supplies, OVP crowbar circuits, reference for A/D, D/A, and as zener diodes with improved turn-on characteristics.
K E Y F E AT U R E S
W INITIAL VOLTAGE REFERENCE ACCURACY OF 0.4% (TL431B) W SINK CURRENT CAPABILITY 1mA to 100mA W TYPICAL OUTPUT DYNAMIC IMPEDANCE LESS THAN 200m; TYPICAL OUTPUT IMPEDANCE OF THE TL431B LESS THAN 100m W ADJUSTABLE OUTPUT VOLTAGE FROM 2.5V TO 36V W AVAILABLE IN SURFACE-MOUNT PACKAGES W LOW OUTPUT NOISE W TYPICAL EQUIVALENT FULL RANGE TEMPERATURE COEFFICIENT OF 30ppm/°C W DIRECT PIN-TO-PIN REPLACEMENT FOR INDUSTRY STANDARD TL431 AND TL1431
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.
PRODUCT HIGHLIGHT
PRECISION PROGRAMMABLE REFERENCES
VIN R1 VOUT
TL431/A & TL431B
R2
VO =
1 +
R1 R2
* VREF
PA C K A G E O R D E R I N F O R M AT I O N TA (°C)
0 to 70
Initial Tolerance
2% 1% 0.4%……
