LTC6991HS6#TRMPBF

LTC6991 TimerBlox: Resettable, Low Frequency Oscillator FEATURES DESCRIPTION n Period Range: 1ms to 9.5 Hours The LTC 6991 is a silicon oscillator with a program- n Configured with 1 to 3 Resistors mable period range of 1.024ms to 9.54 hours (29.1Hz n <1.5% Maximum Frequency Error to 977Hz), specifically intended for long duration timing n Output Reset Function events. The LTC6991 is part of the TimerBlox family of n 2.25V to 5.5V Single Supply Operation versatile silicon timing devices. n 55A to 80A Supply Current A single resistor, R , programs the LTC6991s inter- SET n (2ms to 9.5hr Clock Period) nal master oscillator frequency. The output clock period n 500s Start-Up Time is determined by this master oscillator and an internal n CMOS Output Driver Sources/Sinks 20mA frequency divider, N , programmable to eight settings DIV n 55C to 125C Operating Temperature Range 21 from 1 to 2 . n Available in Low Profile (1mm) SOT-23 (ThinSOT) N R and 2mm 3mm DFN Packages DIV SET 21 t = 1.024ms,N =1,8,64,...,2 DIV OUT n AEC-Q100 Qualified for Automotive Applications 50k In normal operation, the LTC6991 oscillates with a 50% duty cycle. A reset function is provided to truncate the APPLICATIONS pulse (reducing the duty cycle). The reset pin can also be n used to prevent the output from oscillating. Heartbeat Timers n Watchdog Timers The RST and OUT pins can be configured for active-low n Intervalometers or active-high operation using a polarity function. n Periodic Wake-Up Call POL BIT RST PIN OUTPUT STATE n High Vibration, High Acceleration Environments 0 0 Oscillating n Portable and Battery-Powered Equipment 0 1 0 (reset) All registered trademarks and trademarks are the property of their respective owners. 1 0 1 (reset) 1 1 Oscillating For easy configuration of the LTC6991, use the LTC6991: Low Frequency Oscillator Web-Based Design Tool. Clock Period Range over Eight Divider Settings TYPICAL APPLICATION 10Hr Low Frequency Pulse Generator 1Hr 1s PULSE WIDTH 10Min OUT 60 SECONDS R PW 1Min 2.26k 10Sec RST OUT 6991 TA01a C PW LTC6991 5V 1Sec 470pF + GND V 100ms R1 0.1F R SET 1M 715k 10ms SET DIV R2 1ms 392k 1.25 0 0.625 1.875 2.5 t R C 1s DIV PIN VOLTAGE, V (V) 6991 TA01b PULSE PW PW DIV Rev. D 1 Document Feedback For more information www.analog.com CLOCK PERIOD (LOG SCALE)LTC6991 ABSOLUTE MAXIMUM RATINGS (Note 1) + Supply Voltage (V ) to GND ........................................6V Specified Temperature Range (Note 3) Maximum Voltage LTC6991C ................................................ 0C to 70C + on Any Pin ................ (GND 0.3V) V (V + 0.3V) LTC6991I .............................................40C to 85C PIN Operating Temperature Range (Note 2) LTC6991H .......................................... 40C to 125C LTC6991C ............................................40C to 85C LTC6991MP ....................................... 55C to 125C LTC6991I .............................................40C to 85C Junction Temperature ........................................... 150C LTC6991H .......................................... 40C to 125C Storage Temperature Range .................. 65C to 150C LTC6991MP ....................................... 55C to 125C Lead Temperature (Soldering, 10 sec) S6 Package ...........................................................300C PIN CONFIGURATION TOP VIEW TOP VIEW + V 1 6 OUT RST 1 6 OUT 7 DIV 2 5 GND + GND 2 5 V SET 4 RST 3 SET 3 4 DIV DCB PACKAGE S6 PACKAGE 6-LEAD (2mm 3mm) PLASTIC DFN 6-LEAD PLASTIC TSOT-23 T = 150C, = 64C/W, = 10.6C/W T = 150C, = 192C/W, = 51C/W JMAX JA JC JMAX JA JC EXPOSED PAD (PIN 7) CONNECTED TO GND, PCB CONNECTION OPTIONAL ORDER INFORMATION Lead Free Finish TAPE AND REEL (MINI) TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LTC6991CDCB TRMPBF LTC6991CDCB TRPBF LDWZ 6-Lead (2mm 3mm) Plastic DFN 0C to 70C LTC6991IDCB TRMPBF LTC6991IDCB TRPBF LDWZ 6-Lead (2mm 3mm) Plastic DFN 40C to 85C LTC6991HDCB TRMPBF LTC6991HDCB TRPBF LDWZ 6-Lead (2mm 3mm) Plastic DFN 40C to 125C LTC6991CS6 TRMPBF LTC6991CS6 TRPBF LTDWY 6-Lead Plastic TSOT-23 0C to 70C LTC6991IS6 TRMPBF LTC6991IS6 TRPBF LTDWY 6-Lead Plastic TSOT-23 40C to 85C LTC6991HS6 TRMPBF LTC6991HS6 TRPBF LTDWY 6-Lead Plastic TSOT-23 40C to 125C LTC6991MPS6 TRMPBF LTC6991MPS6 TRPBF LTDWY 6-Lead Plastic TSOT-23 55C to 125C AUTOMOTIVE PRODUCTS** LTC6991IS6 WTRMPBF LTC6991IS6 WTRPBF LTDWY 6-Lead Plastic TSOT-23 40C to 85C LTC6991HS6 WTRMPBF LTC6991HS6 WTRPBF LTDWY 6-Lead Plastic TSOT-23 40C to 125C TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. **Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These models are designated with a W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for thesemodels. Rev. D 2 For more information www.analog.com