LTC6909CMS#PBF Linear Technology, LTC6909CMS#PBF Datasheet
LTC6909CMS#PBF
Specifications of LTC6909CMS#PBF
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LTC6909CMS#PBF Summary of contents
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... Synchronizing Multiple Switching Power Supplies n L, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6342817, 6614313, 7417509. ...
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... Junction Temperature ........................................... 150°C Storage Temperature Range .................. –65°C to 150°C Lead Temperature (Soldering, 10 sec) ................... 300°C orDer inForMAtion LEAD FREE FINISH TAPE AND REEL LTC6909CMS#PBF LTC6909CMS#TRPBF LTC6909IMS#PBF LTC6909IMS#TRPBF LTC6909HMS#PBF LTC6909HMS#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. ...
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5pF unless otherwise noted. The modulation is turned off (MOD is connected to OUT1) and unless otherwise specified defined as the resistor connected ...
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LTC6909 electricAl chArActeristics Note the internal master oscillator frequency. The output MASTER frequency is f /PH. The PH value is determined by the connections MASTER of the PH0, PH1 and PH2 pins as described in the Applications ...
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Supply Current vs Temperature 700 650 + 600 550 + V = 2.7V 500 R = 100k SET 450 5pF LOAD SSFM DISABLED 400 –40 – ...
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LTC6909 pin Functions + V A (Pin 1): Analog Voltage Supply (2.7V ≤ V This supply should be kept free of noise and ripple. It should be bypassed directly to GND with a 0.1µF or greater + + low ESR ...
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DiAgrAM + SET V SET – 16 SET + V – SET R BIAS SET + V + – 3-STATE MOD 14 INPUT DECODER DETECT + CLOCK INPUT – GND ...
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LTC6909 operAtion As shown in the Block Diagram, the LTC6909’s master oscillator is controlled by the ratio of the voltage between + the V A and SET pins and the current entering the SET pin (I ). When the spread ...
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MASTER OSCILLATOR PH2 - PH1 - PH0 = 000 ALL OUTPUTS ARE Hi-Z PH2 - PH1 - PH0 = 001 ALL OUTPUTS ARE LOW PH2 - PH1 - PH0 = 010 OUTPUT MASTER ...
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LTC6909 operAtion MASTER OSCILLATOR PH2 - PH1 - PH0 = 110 OUTPUT MASTER OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 Hi-Z PH2 - PH1 - PH0 = 111 ...
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Spread Spectrum Frequency Modulation The LTC6909 can operate with spread spectrum frequency modulation (SSFM). In this mode, the oscillator’s frequency is modulated by a pseudorandom noise (PRN) signal to spread the oscillator’s energy over a wide frequency band. This ...
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LTC6909 ApplicAtions inForMAtion SELECTING THE FREqUENCY-SETTING RESISTOR The LTC6909 has a master oscillator frequency range spanning 100kHz to 20MHz depending on the R tor value. However, accuracy may suffer if the oscillator is operated at a master oscillator frequency greater ...
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... SYNC, PLLIN, SYNC/MODE, EXTCLK, FCB and S/S (shorthand for SYNC/SHDN) are examples of clock input pin names used with Linear Technology ICs. For the best EMC performance, the LTC6909 should be run with the MOD pin tied to ground (SSFM enabled, modula- tion rate set to f /16) ...
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LTC6909 ApplicAtions inForMAtion peak electromagnetic radiation (or conduction) is reduced. Output ripple may be somewhat increased, but its behavior is very much like noise and its system impact is benign. SUPPLY BYPASSING, SIGNAL CONNECTIONS AND PCB LAYOUT Using the LTC6909 ...
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ApplicAtions inForMAtion 9. The connections for PH0, PH1 and PH2 are not shown in Figure 6. These pins are connected to either GND depending on the output phasing required for the application. Connection to ground is ...
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... At start-up, most switching regulators ignore the clock input until a power good state is achieved. Nearly all of Linear Technology’s switching regulators operate in this manner. However, some switching regulators from other vendors do not ignore the clock input on start-up and yet are not synchronizable until the power good state is reached ...
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ApplicAtions Simply Parallel Multiple DC/DC µModule Easy as Copying and Pasting Each µModule Regulator’s Layout With Very Few External Components Required 10V TO 14V 71.5k LTC6909 + V A SET 0.1µF SSFM DISABLED GND PH2 PH0 MOD + PH1 ...
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LTC6909 typicAl ApplicAtions Using Additional Standard Logic Inverters to Achieve 10- and 14-Phase Outputs 10 OUTPUT PHASES (OUTPUTS SHIFTED BY 36 DEGREES 0.1µF LTC6909 + V D OUT1 GND OUT2 + V A OUT3 SET OUT4 0.1µF R ...
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ApplicAtions Combining Eight Outputs With a Lowpass Filter to Create a Sine Wave 2.7V TO 5.5V 249k 0.1µF 2 GND 3 LTC6909 PH0 4 PH1 787k 5 OUT1 402k 6 OUT2 140k 7 OUT3 80.6k ...
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LTC6909 pAckAge Description 5.23 (.206) MIN 0.305 ± 0.038 (.0120 ± .0015) TYP RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) GAUGE PLANE 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, ...
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... Revised Typical Applications drawings for 10 and 14 output phases. 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. ...
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... INTV CC S0FT-START LTM4601 OUTPUT1 TRACKING LTM4601-1 OUTPUT2 TRACKING LTM4601-1 OUTPUT3 TRACKING LTM4601-1 OUTPUT4 TRACKING LTM4601-1 OUTPUT3 TRACKING LTM4601-1 OUTPUT4 TRACKING LTM4601-1 OUTPUT3 TRACKING LTM4601-1 OUTPUT4 6909 TA05 SPI Interface LT 0111 REV A • PRINTED IN USA LINEAR TECHNOLOGY CORPORA TION 2009 6909fa ...