 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
LT1640ALCS8 Datasheet(PDF) 5 Page - Linear Technology |
|
||||||||||||||||||||||||||||||
LT1640ALCS8 Datasheet(HTML) 5 Page - Linear Technology |
|
|
5 / 16 page  5 LT1640AL/LT1640AH PIN FUNCTIONS OV (Pin 2): Analog Overvoltage Input. When OV is pulled above the 1.223V low-to-high threshold, an overvoltage condition is detected and the GATE pin will be immediately pulled low. The GATE pin will remain low until OV drops below the 1.203V high-to-low threshold. UV (Pin 3): Analog Undervoltage Input. When UV is pulled below the 1.223V high to low threshold, an under- voltage condition is detected and the GATE pin will be immediately pulled low. The GATE pin will remain low until UV rises above the 1.243 low-to-high threshold. The UV pin is also used to reset the electronic circuit breaker. If the UV pin is cycled low and high following the trip of the circuit breaker, the circuit breaker is reset and a normal power-up sequence will occur. VEE (Pin 4): Negative Supply Voltage Input. Connect to the lower potential of the power supply. SENSE (Pin 5): Circuit Breaker Sense Pin. With a sense resistor placed in the supply path between VEE and SENSE, the circuit breaker will trip when the voltage across the resistor exceeds 50mV. Noise spikes of less than 2 µs are filtered out and will not trip the circuit breaker. If the circuit breaker trip current is set to twice the normal operating current, only 25mV is dropped across the sense resistor during normal operation. To disable the circuit breaker, VEE and SENSE can be shorted together. GATE (Pin 6): Gate Drive Output for the External N-Channel. The GATE pin will go high when the following start-up conditions are met: the UV pin is high, the OV pin is low and (VSENSE – VEE) < 50mV. The GATE pin is pulled high by a 45 µA current source and pulled low with a 50mA current source. DRAIN (Pin 7): Analog Drain Sense Input. Connect this pin to the drain of the external N-channel and the V – pin of the power module. When the DRAIN pin is below VPG, the PWRGD or PWRGD pin will toggle. In some condi- tions, the DRAIN pin is pulled below VEE. The part is not damaged if the reverse DRAIN pin current is limited to 50mA. VDD (Pin 8): Positive Supply Voltage Input. Connect this pin to the higher potential of the power supply inputs and the V + pin of the power module. The input supply voltage ranges from 10V to 80V. BLOCK DIAGRA – + + – + – DRAIN 1640A BD GATE SENSE VEE VEE VPG OUTPUT DRIVE PWRGD/PWRGD 50mV VCC VDD REF REF UV OV LOGIC AND GATE DRIVE VCC AND REFERENCE GENERATOR |
Similar Part No. - LT1640ALCS8 |
|
Similar Description - LT1640ALCS8 |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
