LTC6991IS6#TRPBF Linear Technology, LTC6991IS6#TRPBF Datasheet
LTC6991IS6#TRPBF
Specifications of LTC6991IS6#TRPBF
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LTC6991IS6#TRPBF Summary of contents
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... High Vibration, High Acceleration Environments n Portable and Battery-Powered Equipment n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT and TimerBlox are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Typical applicaTion ...
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... LTC6991HDCB#PBF LTC6991HDCB#TRPBF LTC6991CS6#PBF LTC6991CS6#TRPBF LTC6991IS6#PBF LTC6991IS6#TRPBF LTC6991HS6#PBF LTC6991HS6#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: ...
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50k to 800k, R DIV SET LOAD SYMBOL PARAMETER t Output Clock Period OUT f Output Frequency OUT Frequency Accuracy (Note 4) ...
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LTC6991 elecTrical characTerisTics temperature range, otherwise specifications are 50k to 800k, R DIV SET LOAD SYMBOL PARAMETER Digital I/O RST Pin Input Capacitance RST Pin Input Current V High ...
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Typical perForMance characTerisTics + V = 3.3V 200k 25°C unless otherwise noted. SET A Frequency Error vs Temperature 3 GUARANTEED MAX OVER TEMPERATURE 50k SET 3 PARTS 1 0 –1 GUARANTEED MIN OVER ...
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LTC6991 Typical perForMance characTerisTics + V = 3.3V 200k 25°C unless otherwise noted. SET A Supply Current vs Supply Voltage 150 R = 50k SET 125 100 R = 100k SET R = 200k SET 75 ...
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Typical perForMance characTerisTics + V = 3.3V 200k 25°C unless otherwise noted. SET A Output Resistance vs Supply Current OUTPUT SOURCING CURRENT OUTPUT SINKING CURRENT ...
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LTC6991 pin FuncTions (DCB/S6) GND (Pin 5/Pin 2): Ground. Tie to a low inductance ground plane for best performance. OUT (Pin 6/Pin 6): Oscillator Output. The OUT pin swings + from GND to V with an output resistance of approximately ...
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The LTC6991 is built around a master oscillator with a 1MHz maximum frequency. The oscillator is controlled by the SET pin current (I ) and voltage (V SET 1MHz • 50k conversion factor that is accurate to ±0.8% under ...
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LTC6991 operaTion Table 1. DIVCODE Programming DIVCODE POL 512 4 0 4,096 5 0 32,768 6 0 262,144 7 0 2,097,152 8 1 2,097,152 9 1 262,144 10 1 32,768 ...
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RST Pin and Polarity (POL) Bit The RST pin controls the state of the LTC6991’s output as seen on the OUT pin. The active/inactive voltage levels depend on the POL bit setting. Table 2. Output States POL BIT RST ...
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LTC6991 operaTion Changing DIVCODE After Start-Up Following start-up, the A/D converter will continue monitoring V for changes. The LTC6991 will respond DIV to DIVCODE changes in less than one cycle. t < 500 • t < t DIVCODE MASTER OUT ...
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RST OUT t START RST OUT t START RST OUT t START t MASTER RST OUT t START t MASTER t OUT Figure 7. Start-Up Timing Diagram (RST = 0, POL = 0) OUTPUT DISABLED FOR INTEGER MULTIPLE OF ...
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LTC6991 applicaTions inForMaTion Basic Operation The simplest and most accurate method to program the LTC6991 is to use a single resistor, R and GND pins. The design procedure is a 3-step process. First select the POL bit setting and N ...
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LTC6991 as “Wake-Up Timer” The output latch reset function provided by the RST pin allows the LTC6991 to enable a larger system at regular intervals. The on-time can be controlled by the system. This allows the system to ...
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LTC6991 applicaTions inForMaTion Self-Resetting Circuits The RST pin has hysteresis to accommodate slow-changing input voltages. Furthermore, the trip points are proportional to the supply voltage (see Note 6 and the RST Threshold Voltage vs Supply Voltage curve in Typical Performance ...
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D µP CLK CS/LD The oscillator can still function with reduced accuracy for I < 1.25µA. At approximately 500nA, the oscillator SET output will be frozen in its current state. The output could halt in a high or ...
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LTC6991 applicaTions inForMaTion + DIV R2 SET R SET DFN PACKAGE 1. Connect the bypass capacitor, C1, directly to the V GND pins using a low inductance path. The connection + from C1 to the ...
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Typical applicaTions RELAY ENABLE R7 10k RESET = OPEN RUN = GND R6 121k 5 Second On/Off Timed Relay Driver 12V 0.1µ 1N4148 RESET R4 RUN 15k Q1 RST OUT 2N2219A LTC6991 5V + GND ...
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LTC6991 Typical applicaTions Cycling (10 Seconds On/Off) Symmetrical Power Supplies 5V 0.1µ 10k + 1 V OPEN = OFF RST OUT GND = ON LTC6991 3 SET DIV GND R SET 237k 2 10 SECONDS ON/OFF 0 Si4435DY ...
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Typical applicaTions 2s 5s 15s 5V 30s + OFF 66.5k 2s 280k 5s 15s 30s 182k 18.2k OFF 182k 2s 280k 5s 15s 30s 113k 133k OFF Interval (Wiper) Timer ...
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LTC6991 package DescripTion 1.65 0.05 3.55 0.05 (2 SIDES) 2.15 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS PIN 1 BAR TOP MARK (SEE NOTE 6) 0.200 REF DCB Package 6-Lead Plastic DFN (2mm × 3mm) (Reference LTC DWG # ...
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... MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. S6 Package ...
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... Simple PWM with Wide Frequency Range Resistor Programmable Pulse Width of 1µs to 34sec Delays Rising, Falling or Both Edges 1µs to 34sec www.linear.com ● R1B 1µF 1M “SLOW RANGE” 1.1MIN TO 8.5 MIN = 35µA at 400kHz SUPPLY LT 0910 • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2010 6991f ...