Product Summary

The lm431acmx is a 3-terminal adjustable shunt regulator with guaranteed temperature stability over the entire temperature range of operation. The lm431acmx is now available in a chip sized package (4-Bump micro SMD) using Nationals micro SMD package technology. The output voltage of the lm431acmx may be set at any level greater than 2.5V (VREF) up to 36V merely by selecting two external resistors that act as a voltage divided network. Due to the sharp turn-on characteristics the lm431acmx is an excellent replacement for many zener diode applications.

Parametrics

lm431acmx absolute maximum ratings: (1)Storage Temperature Range: -65℃ to +150℃; (2)Operating Temperature Range: Industrial (LM431xI): -40℃ to +85℃; Commercial (LM431xC): 0℃ to +70℃; (3)Soldering Information: Infrared or Convection (20 sec.): 235℃; Wave Soldering (10 sec.): 260℃ (lead temp.); (4)Cathode Voltage: 37V; (5)Continuous Cathode Current: -10 mA to +150mA; (6)Reference Voltage: -0.5V; (7)Reference Input Current: 10 mA; (8)Internal Power Dissipation: TO-92 Package: 0.78W; SO-8 Package: 0.81W; SOT-23 Package: 0.28W; micro SMD Package 0.30W.

Features

lm431acmx features: (1)Average temperature coefficient 50 ppm/℃; (2)Temperature compensated for operatioover the full temperature range; (3)Programmable output voltage; (4)Fast turn-oresponse; (5)Low output noise; (6)LM431 imicro SMD package; (7)See AN-1112 for micro SMD considerations.

Diagrams

lm431acmx pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM431ACMX
LM431ACMX
Fairchild Semiconductor
Voltage & Current References SOP-8 Shunt
Data Sheet
0-1: $0.30
1-25: $0.20
25-100: $0.17
100-250: $0.15
LM431ACMX/NOPB
LM431ACMX/NOPB
National Semiconductor (TI)
Voltage & Current References
Data Sheet
0-1: $0.37
1-25: $0.29
25-100: $0.25
100-250: $0.22