LTC1772CS6#TR Linear Technology, LTC1772CS6#TR Datasheet
LTC1772CS6#TR
Specifications of LTC1772CS6#TR
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LTC1772CS6#TR Summary of contents
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... High constant operating frequency of 550kHz allows the use of a small external inductor. The LTC1772 is available in a small footprint 6-lead SOT-23. , LTC and LT are registered trademarks of Linear Technology Corporation. Burst Mode is a registered trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners ...
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LTC1772 ABSOLUTE MAXIMUM (Note 1) Input Supply Voltage (V ).........................– 0.3V to 10V IN – SENSE , PGATE Voltages ............. – 0. /RUN Voltages .............................– 0. PGATE Peak ...
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ELECTRICAL CHARACTERISTICS Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LTC1772E is guaranteed to meet specifications from 0°C to 70°C. Specifications over the –40°C to 85°C operating ...
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LTC1772 PIN FUNCTIONS I /RUN (Pin 1): This pin performs two functions serves as the error amplifier compensation point as well as the run control input. The current comparator threshold increases with this control voltage. ...
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U OPERATIO (Refer to Functional Diagram) Main Control Loop The LTC1772 is a constant frequency current mode switch- ing regulator. During normal operation, the external P-channel power MOSFET is turned on each cycle when the oscillator sets the RS latch ...
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LTC1772 U OPERATIO (Refer to Functional Diagram) Slope Compensation and Inductor’s Peak Current The inductor’s peak current is determined by: V – ITH = SENSE when the LTC1772 is operating below ...
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U U APPLICATIONS INFORMATION where f is the operating frequency. Accepting larger values of I allows the use of low inductances, but results in RIPPLE higher output voltage ripple and greater core losses. A reasonable starting point for setting ripple ...
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LTC1772 U U APPLICATIONS INFORMATION Output Diode Selection The catch diode carries load current during the off-time. The average diode current is therefore dependent on the P-channel switch duty cycle. At high input voltages the diode conducts most of the ...
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U U APPLICATIONS INFORMATION Low Supply Operation Although the LTC1772 can function down to approxi- mately 2V, the maximum allowable output current is reduced when V decreases below 3V. Figure 3 shows the IN amount of change as the supply ...
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LTC1772 U U APPLICATIONS INFORMATION 0.4V, the loss increases from 0. the load current increases from 0.5A to 2A. 5. Transition losses apply to the external MOSFET and increase at higher operating frequencies and input voltages. Transition ...
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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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. R1 0.15Ω ...
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... Phase, Dual Synchronous Controller LTC1735 Single, High Efficiency, Low Noise Synchronous Switching Controller LTC1771 Ultra-Low Supply Current Step-Down DC/DC Controller LTC1872 SOT-23 Step-Up Controller trademark of Linear Technology Corporation. SENSE Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...