 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
LTC691 Datasheet(PDF) 6 Page - Linear Technology |
|
||||||||||||||||||||||||||||||
LTC691 Datasheet(HTML) 6 Page - Linear Technology |
|
|
6 / 18 page  LTC690/LTC691 LTC694/LTC695 6 690fe BLOCK DIAGRAM CHARGE PUMP M2 M1 VBATT VCC CE IN PFI OSC IN OSC SEL WDI RESET PULSE GENERATOR WATCHDOG TIMER RESET BATT ON VOUT C1 1.3V GND – + – + C2 OSC TRANSITION DETECTOR – + C3 WDO RESET PFO LOW⎯LINE CE OUT 690 BD PIN FUNCTIONS VCC: 5V Supply Input. The VCC pin should be bypassed with a 0.1μF capacitor. VOUT: Voltage Output for Backed Up Memory. Bypass with a capacitor of 0.1μF or greater. During normal operation, VOUT obtains power from VCC through an NMOS power switch, M1, which can deliver up to 50mA and has a typical on resistance of 5Ω. When VCC is lower than VBATT, VOUT is internally switched to VBATT. If VOUT and VBATT are not used, connect VOUT to VCC. VBATT: Back-Up Battery Input. When VCC falls below VBATT, auxiliary power, connected to VBATT, is delivered to VOUT through PMOS switch, M2. If back-up battery or auxiliary power is not used, VBATT should be connected to GND. GND: Ground pin. BATT ON: Battery On Logic Output from Comparator C2. BATT ON goes low when VOUT is internally connected to VCC. The output typically sinks 35mA and can provide base drive for an external PNP transistor to increase the output current above the 50mA rating of VOUT. BATT ON goes high when VOUT is internally switched to VBATT. PFI: Power Failure Input. PFI is the noninverting input to the power-fail comparator, C3. The inverting input is internally connected to a 1.3V reference. The power failure output remains high when PFI is above 1.3V and goes low when PFI is below 1.3V. Connect PFI to GND or VOUT when C3 is not used. |
Similar Part No. - LTC691 |
|
Similar Description - LTC691 |
|
|
|
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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
