LTC6992-1/LTC6992-2/ LTC6992-3/LTC6992-4 TimerBlox: Voltage-Controlled Pulse Width Modulator (PWM) FEATURES DESCRIPTION n Pulse Width Modulation (PWM) Controlled by The LTC 6992 is a silicon oscillator with an easy-to-use Simple 0V to 1V Analog Input analog voltage-controlled pulse width modulation (PWM) n Four Available Options Define Duty Cycle Limits capability. The LTC6992 is part of the TimerBlox family n Minimum Duty Cycle at 0% or 5% of versatile silicon timing devices. n Maximum Duty Cycle at 95% or 100% A single resistor, R , programs the LTC6992s inter- SET n Frequency Range: 3.81Hz to 1MHz nal master oscillator frequency. The output frequency n Configured with 1 to 3 Resistors is determined by this master oscillator and an internal n <1.7% Maximum Frequency Error frequency divider, N , programmable to eight settings DIV n PWM Duty Cycle Error < 3.7% Maximum from 1 to 16384. n Frequency Modulation (VCO) Capability 1MHz 50k n 2.25V to 5.5V Single Supply Operation f = , N = 1,4,16 16384 OUT DIV n N R 115A Supply Current at 100kHz DIV SET n 500s Start-Up Time Applying a voltage between 0V and 1V on the MOD pin n CMOS Output Driver Sources/Sinks 20mA sets the duty cycle. n 55C to 125C Operating Temperature Range n The four versions differ in their minimum/maximum duty Available in Low Profile (1mm) SOT-23 (ThinSOT) cycle. Note that a minimum duty cycle limit of 0% or and 2mm 3mm DFN n maximum duty cycle limit of 100% allows oscillations to AEC-Q100 Qualified for Automotive Applications stop at the extreme duty cycle settings. APPLICATIONS DEVICE NAME PWM DUTY CYCLE RANGE LTC6992-1 0% to 100% n PWM Servo Loops LTC6992-2 5% to 95% n Heater Control LTC6992-3 0% to 95% n LED Dimming Control LTC6992-4 5% to 100% n High Vibration, High Acceleration Environments n Portable and Battery-Powered Equipment For easy configuration of the LTC6992, use the TimerBlox LTC6992: PWM Web-Based Design Tool. All registered trademarks and trademarks are the property of their respective owners. TYPICAL APPLICATION 1MHz Pulse Width Modulator ANALOG PWM DUTY CYCLE MOD OUT MOD CONTROL 0.5V/DIV LTC6992 (0V TO 1V) 3.3V + GND V C1 OUT 0.1F 1V/DIV SET DIV 6992 TA01a R SET 50k 6992 TA01b 2s/DIV Rev. D 1 Document Feedback For more information www.analog.comLTC6992-1/LTC6992-2/ LTC6992-3/LTC6992-4 ABSOLUTE MAXIMUM RATINGS (Note 1) + Supply Voltage (V ) to GND ..........6V Specified Temperature Range (Note 3) Maximum Voltage On Any Pin LTC6992C ................................................ 0C to 70C + .............................(GND 0.3V) V (V + 0.3V) LTC6992I .............................................40C to 85C PIN Operating Temperature Range (Note 2) LTC6992H .......................................... 40C to 125C LTC6992C ............................................40C to 85C LTC6992MP ....................................... 55C to 125C LTC6992I .............................................40C to 85C Junction Temperature .......................................... 150C LTC6992H .......................................... 40C to 125C Storage Temperature Range .................. 65C to 150C LTC6992MP ....................................... 55C to 125C Lead Temperature (Soldering, 10 sec) S6 Package .......................................................300C PIN CONFIGURATION TOP VIEW TOP VIEW V+ 1 6 OUT MOD 1 6 OUT 7 DIV 2 5 GND + GND 2 5 V GND SET 4 MOD 3 SET 3 4 DIV S6 PACKAGE DCB PACKAGE 6-LEAD PLASTIC TSOT-23 6-LEAD (2mm 3mm) PLASTIC DFN T = 150C, = 192C/W, = 51C/W JMAX JA JC T = 150C, = 64C/W, = 10.6C/W JMAX JA JC EXPOSED PAD (PIN 7) IS GND, PCB CONNECTION IS OPTIONAL Rev. D 2 For more information www.analog.com