 English |
|
|
|
|
|
|
|
| TL431 Datasheet, PDF (12/12 Pages) Motorola, Inc – PROGRAMMABLE PRECISION REFERENCES | |||
| |||
| ◁ |
PRODUCT DATABOOK 1996/1997
TL431/TL431A/TL431B
PRECISION PROGRAMMABLE REFERENCES
PRODUCTION DATA SHEET
APPLICATION INFORMATION
12V
R1A
TL431/A
& TL431B
R3 (see Note)
R4
(Note)
VBATT
IO
TL431/A
& TL431B
R2A
R2B
Low Limit = ï£1 +
R1B 
R2B 
* VREF
High Limit = ï£1 +
R1B 
R2B 
* VREF
LED On when
Low Limit < VBATT < High Limit
Note: R3 and R4 are selected to provide the desired LED intensity and ⥠1mA
cathode current to the TL431/A & TL431B at the available V+.
FIGURE 20 â VOLTAGE MONITOR
RS
0.1%
IO =

ï£
VREF
RS


FIGURE 21 â PRECISION CONTANT-CURRENT SINK
12
PRODUCTION DATA - Information contained in this document is proprietary to LinFinity, and is current as of publication date. This document
may not be modified in any way without the express written consent of LinFinity. Product processing does not necessarily include testing of
all parameters. Linfinity reserves the right to change the configuration and performance of the product and to discontinue product at any time.
Copyright © 1999
Rev. 1.3 9/99
|
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese