Electronic Components Datasheet Search |
|
LTC2919HMS-5-TRPBF Datasheet(PDF) 10 Page - Linear Technology |
|
LTC2919HMS-5-TRPBF Datasheet(HTML) 10 Page - Linear Technology |
10 / 16 page LTC2919 10 2919f APPLICATIO S I FOR ATIO Adjust Input Trip Point The trip threshold for the supplies monitored by the adjustable inputs is set with an external resistor divider, allowing the user complete control over the trip point. Selection of this trip voltage is crucial to the monitoring of the system. Any power supply has some tolerance band within which it is expected to operate (e.g., 5V ±10%). It is generally undesirable that a supervisor issue a reset when the power supply is inside this tolerance band. Such a “nuisance” reset reduces reliability by preventing the system from functioning under normal conditions. Table 2b. Possible Combinations of Supply Monitoring. For Example Purposes, All Supplies are Monitored at 5% Tolerance and Connections are Shown Only for ADJ1, ADJ2, REF, SEL, OUT1 and OUT2. Output Pull-up Resistors are Omitted for Clarity. ADJ1 ADJ2 OUT1 OUT2 UV OV SEL 15V RP6 2.37M RP5 10.7k RP4 76.8k REF SEL OPEN 1 Positive UV and OV ADJ1 ADJ2 OUT1 OUT2 UV (15V) OV (5V) SEL 5V 15V RP2B 133k RP1B 13.7k RP1A 11.5k RP2A 309k REF 1 Positive UV, 1 Positive OV 1 Negative OV, 1 Positive OV ADJ1 ADJ2 OUT1 OUT2 OV UV SEL –15V RN6 1.02M RN4 30.9k RN5 4.02k REF 1 Negative UV and OV ADJ1 ADJ2 OUT1 OUT2 OV (–15V) OV (15V) SEL 15V –15V RP2 619k RP1 20k RN1 30.9k RN2 1.02M REF ADJ1 ADJ2 OUT1 OUT2 OV (–15V) UV (–5V) SEL –5V –15V RN2B 137k RN1B 13.3k RN1A 30.9k RN2A 1.02M REF ADJ1 ADJ2 OUT1 OUT2 UV (15V) UV (–15V) SEL –15V 15V RN2 309k RN1 10.7k RP1 11.5k RP2 309k REF 1 Positive UV, 1 Negative UV 1 Negative UV, 1 Negative OV To prevent nuisance resets, the supervisor threshold must be guaranteed to lie outside the power supply tolerance band. To ensure that the threshold lies outside the power supply tolerance range, the nominal threshold must lie out- side that range by the monitor’s accuracy specification. All three of the LTC2919 inputs (ADJ1, ADJ2, VCC UVLO) have the same maximum threshold accuracy of ±1.5% of the programmed nominal input voltage (over the full operat- ing temperature range). Therefore, using the LTC2919, the typical 10% UV threshold is at 11.5% below the nominal input voltage level. For a 5V input, the threshold is nominally 4.425V. With ±1.5% accuracy, the trip threshold range is |
Similar Part No. - LTC2919HMS-5-TRPBF |
|
Similar Description - LTC2919HMS-5-TRPBF |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |