Electronic Components Datasheet Search |
|
LTC691CSW-PBF Datasheet(PDF) 5 Page - Linear Technology |
|
LTC691CSW-PBF Datasheet(HTML) 5 Page - Linear Technology |
5 / 18 page LTC690/LTC691 LTC694/LTC695 5 690fe Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: All voltage values are with respect to GND. Note 3: For military temperature range parts or for the LTC692 and LTC693, consult the factory. Note 4: The output pins of BATT ON, LOW⎯LINE, PFO, WDO, RESET and RESET have weak internal pull-ups of typically 3μA. However, external pull- up resistors may be used when higher speed is required. PARAMETER CONDITIONS MIN TYP MAX UNITS RESET, RESET, WDO, LOW⎯LINE Output Short-Circuit Current (Note 4) Output Source Current 1 3 25 μA Output Sink Current 25 mA WDI Input Threshold Logic Low Logic high 3.5 0.8 V WDI Input Current WDI = VOUT WDI = 0V l l –50 4 –8 50 μA Power-Fail Detector PFI Input Threshold VCC = 5V l 1.25 1.3 1.35 V PFI Input Threshold PSRR 0.3 mV/V PFI Input Current ±0.01 ±25 nA PFO Output Voltage (Note 4) ISINK = 3.2mA ISOURCE = 1μA 3.5 0.4 V PFO Short-Circuit Source Current (Note 4) PFI = HIGH, PFO = 0V 1 3 25 μA PFI = LOW, PFO = VOUT 25 mA PFI Comparator Response Time (Falling) ΔVIN = –20mV, VOD = 15mV 2 μs PFI Comparator Response Time (Rising) (Note 4) ΔVIN = 20mV, VOD = 15mV with 10kΩ Pull-Up 40 8 μs Chip Enable Gating CE IN Threshold VIL VIH 2 0.8 V CE IN Pull-Up Current (Note 7) 3μA CE OUT Output Voltage ISINK = 3.2mA ISOURCE = 3.0mA ISOURCE = 1μA, VCC = 0V VOUT – 1.50 VOUT – 0.05 0.4 V CE Propagation Delay VCC = 5V, CL = 20pF l 20 20 35 45 ns CE OUT Output Short-Circuit Current Output Source Current Output Sink Current 30 35 mA Oscillator OSC IN Input Current (Note 7) ±2 μA OSC SEL Input Pull-Up Current (Note 7) 5μA OSC IN Frequency Range OSC SEL = 0V l 0 250 kHz OSC IN Frequency with External Capacitor OSC SEL = 0V, COSC = 47pF 4 kHz ELECTRICAL CHARACTERISTICS The l denotes specifications which apply over the operating temperature range, otherwise specifications are at TA = 25°C. VCC = full operating range, VBATT = 2.8V, unless otherwise noted. Note 5: The LTC690 and LTC691 have minimum reset active time of 35ms (50ms typically) while the LTC694 and LTC695 have longer minimum reset active time of 140ms (200ms typically). The reset active time of the LTC691 and LTC695 can be adjusted (see Table 2 in Applications Information section). Note 6: The external clock feeding into the circuit passes through the oscillator before clocking the watchdog timer (See Block Diagram). Variation in the timeout period is caused by phase errors which occur when the oscillator divides the external clock by 64. The resulting variation in the timeout period is 64 clocks plus one clock of jitter. Note 7: The input pins of CE IN, OSC IN and OSC SEL have weak internal pullups which pull to the supply when the input pins are floating. |
Similar Part No. - LTC691CSW-PBF |
|
Similar Description - LTC691CSW-PBF |
|
|
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 |