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TL431CPK Datasheet(PDF) 11 Page - Microsemi Corporation |
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TL431CPK Datasheet(HTML) 11 Page - Microsemi Corporation |
11 / 11 page TL431 / TL431A / TL431B PRODUCTION DATA SHEET Microsemi Integrated Products Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 11 Copyright © 1999 Rev. 1.4, 2006-09-26 Precision programmable References TM ® APPLICATION INFORMATION I K R1 0.1% R2 0.1% V REF TL431/A & TL431B V BATT V O R (see Note) REF O V R2 R1 1 V • + = ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ Figure 16 – Shunt Regulator Note: R should provide > 1mA cathode current to the TL431/A & TL1431 at minimum VBATT Input VON 2V VOFF VBATT GND VBATT VO TL431/A & TL431B Figure 17 – Single-Supply Comparator with Temperature- Compensated Threshold R1 R2 V BATT V O TL431/A & TL431B REF O V R2 R1 1 V • + = ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ Figure 18 – High Current Shunt Regulator R1 R2 V BATT V O C (see Note) TL431/A & TL431B Figure 19 – Crowbar Circuit Note: Refer to the stability boundary conditions in Figure 15 to determine allowable values for C. R1A R2A 12V (Note) R2B R3 (see Note) R4 TL431/A & TL431B REF REF V R2B R1B 1 Limit High V R2B R1B 1 Limit Low • + = • + = ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ LED on when Low Limit < VBATT < High Limit Figure 20 – Voltage Monitor 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+ R S 0.1% V BATT I O TL431/A & TL431B Figure 21 – Precision Contact – Current Sink |
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