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LTC6930 Datasheet(PDF) 1 Page - Analog Devices |
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LTC6930 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 34 page  LTC6992-1/LTC6992-2/ LTC6992-3/LTC6992-4 1 Rev. D For more information www.analog.com Document Feedback TYPICAL APPLICATION DESCRIPTION TimerBlox: Voltage-Controlled Pulse Width Modulator (PWM) The LTC®6992 is a silicon oscillator with an easy-to-use analog voltage-controlled pulse width modulation (PWM) capability. The LTC6992 is part of the TimerBlox® family of versatile silicon timing devices. A single resistor, RSET, programs the LTC6992’s inter- nal master oscillator frequency. The output frequency is determined by this master oscillator and an internal frequency divider, NDIV, programmable to eight settings from 1 to 16384. fOUT = 1MHz NDIV • 50kΩ RSET , NDIV = 1,4,16 …16384 Applying a voltage between 0V and 1V on the MOD pin sets the duty cycle. The four versions differ in their minimum/maximum duty cycle. Note that a minimum duty cycle limit of 0% or maximum duty cycle limit of 100% allows oscillations to stop at the extreme duty cycle settings. DEVICE NAME PWM DUTY CYCLE RANGE LTC6992-1 0% to 100% LTC6992-2 5% to 95% LTC6992-3 0% to 95% LTC6992-4 5% to 100% For easy configuration of the LTC6992, use the TimerBlox LTC6992: PWM Web-Based Design Tool. n Pulse Width Modulation (PWM) Controlled by Simple 0V to 1V Analog Input n Four Available Options Define Duty Cycle Limits n Minimum Duty Cycle at 0% or 5% n Maximum Duty Cycle at 95% or 100% n Frequency Range: 3.81Hz to 1MHz n Configured with 1 to 3 Resistors n <1.7% Maximum Frequency Error n PWM Duty Cycle Error < 3.7% Maximum n Frequency Modulation (VCO) Capability n 2.25V to 5.5V Single Supply Operation n 115μA Supply Current at 100kHz n 500μs Start-Up Time n CMOS Output Driver Sources/Sinks 20mA n –55°C to 125°C Operating Temperature Range n Available in Low Profile (1mm) SOT-23 (ThinSOT™) and 2mm × 3mm DFN n AEC-Q100 Qualified for Automotive Applications FEATURES APPLICATIONS n PWM Servo Loops n Heater Control n LED Dimming Control n High Vibration, High Acceleration Environments n Portable and Battery-Powered Equipment 6992 TA01a LTC6992 MOD GND SET OUT V+ DIV RSET 50k 3.3V ANALOG PWM DUTY CYCLE CONTROL (0V TO 1V) C1 0.1µF 1MHz Pulse Width Modulator MOD 0.5V/DIV OUT 1V/DIV 2µs/DIV 6992 TA01b All registered trademarks and trademarks are the property of their respective owners. |
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