Overview
Features and Benefits
- Pulse Width Modulation (PWM) Controlled by Simple 0V to 1V Analog Input
- Four Available Options Define Duty Cycle Limits
- Minimum Duty Cycle at 0% or 5%
- Maximum Duty Cycle at 95% or 100%
- Frequency Range: 3.81Hz to 1MHz
- Configured with 1 to 3 Resistors
- <1.7% Maximum Frequency Error
- PWM Duty Cycle Error < 3.7% Maximum
- Frequency Modulation (VCO) Capability
- 2.25V to 5.5V Single Supply Operation
- 115μA Supply Current at 100kHz
- 500μs Start-Up Time
- CMOS Output Driver Sources/Sinks 20mA
- –55°C to 125°C Operating Temperature Range
- Available in Low Profile (1mm) SOT-23 (ThinSOT™) and 2mm × 3mm DFN
- AEC-Q100 Qualified for Automotive Applications
Product Details
The LTC6992 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 internal 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.
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.
Applications
- PWM Servo Loops
- Heater Control
- LED Dimming Control
- High Vibration, High Acceleration Environments
- Portable and Battery-Powered Equipment
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (6)
Documentation & Resources
-
R494 Reliability Data3/22/2018
-
DC1562B - Demo Manual8/22/2013
-
Silicon Oscillators11/17/2015
-
TimerBlox6/27/2011
-
The Right Timing5/1/2019
-
Low Power Op Amps: Only 20μA for 1.3MHz, 240μA for 30MHz7/1/2017 LT Journal
-
Solve Isolated Control Problems by Up-Shifting Control Frequency with TimerBlox PWM Generator10/1/2011 LT Journal
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TimerBlox: Function-Specific ICs Quickly and Reliably Solve Timing Problems1/1/2011 LT Journal
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Models for the following parts are available in LTspice:
LTC6992-1
LTC6992-2
LTC6992-3
LTC6992-4
Design Tool
Product Recommendations
LTC6992-1 Companion Parts
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
PCN-PDN Information
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Support & Discussions
Sample & Buy
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.