LTC3601EUD#PBF Linear Technology, LTC3601EUD#PBF Datasheet
LTC3601EUD#PBF
Specifications of LTC3601EUD#PBF
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LTC3601EUD#PBF Summary of contents
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... Point-of-Load Power Supply L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks and Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 5847554, 6580258, 6304066, 6476589, 6774611. ...
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... JMAX JA EXPOSED PAD (PIN 17) IS PGND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC3601EUD#PBF LTC3601EUD#TRPBF LTC3601IUD#PBF LTC3601IUD#TRPBF LTC3601EMSE#PBF LTC3601EMSE#TRPBF LTC3601IMSE#PBF LTC3601IMSE#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. ...
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ELECTRICAL CHARACTERISTICS junction temperature range, otherwise specifi cations are at T SYMBOL PARAMETER V Input Supply Range VIN I Input DC Supply Current Q Forced Continuous Operation Sleep Current Shutdown V Feedback Reference Voltage FB ΔV Reference Voltage Line Regulation ...
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LTC3601 ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC3601 ...
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TYPICAL PERFORMANCE CHARACTERISTICS T = 25° 12V 1MHz 2.2μH unless otherwise noted Temperature DS(ON) 200 160 TOP SWITCH R DS(ON) 120 BOTTOM SWITCH R DS(ON –50 ...
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LTC3601 TYPICAL PERFORMANCE CHARACTERISTICS T = 25° 12V 1MHz 2.2μH unless otherwise noted Output Voltage vs Time Burst Mode Operation SW 5V/DIV V OUT 20mV/DIV AC COUPLED I L 1A/DIV V ...
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PIN FUNCTIONS (QFN/MSE) MODE/SYNC (Pin 1/Pin 15): Mode Selection and External Synchronization Input Pin. This pin places the LTC3601 into forced continuous operation when tied to ground. High effi ciency Burst Mode operation is enabled by either fl oating this ...
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LTC3601 FUNCTIONAL BLOCK DIAGRAM 180k CONTROLLER OSC CMP MODE/SYNC OSC PLL-SYNC THB Q1 EA – 0.6V REF INTERNAL SOFT-START 8 V ...
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OPERATION The LTC3601 is a current mode, monolithic, step-down regulator capable of providing up to 1.5A of output current. Its unique controlled on-time architecture allows extremely low step-down ratios while maintaining a constant switch- ing frequency. Part operation is enabled ...
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LTC3601 APPLICATIONS INFORMATION A general LTC3601 application circuit is shown on the fi rst page of this data sheet. External component selection is largely driven by the load requirement and begins with the selection of the inductor L. Once the ...
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APPLICATIONS INFORMATION exceeded. This collapse will result in an abrupt increase in inductor ripple current important to ensure the core will not saturate. Different core materials and shapes will change the size/current and price/current relationship of an ...
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LTC3601 APPLICATIONS INFORMATION highest capacitance density, but it is important to only use types that have been surge tested for use in switching power supplies. Aluminum electrolytic capacitors have signifi cantly higher ESR but can be used in cost-sensitive applications ...
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APPLICATIONS INFORMATION Minimum Off-Time/On-Time Considerations The minimum off-time is the smallest amount of time that the LTC3601 can turn on the bottom power MOSFET, trip the current comparator and turn the power MOSFET back off. This time is typically 40ns. ...
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... For a detailed explanation of optimizing the compensation components, including a review of control loop theory, refer to Linear Technology Application Note 76. As shown in Figure 2 a feedforward capacitor, C across feedback resistor R1 to improve the high frequency response of the system. Capacitor C by creating a high frequency zero with R1 ...
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APPLICATIONS INFORMATION a soft-start function by connecting a capacitor from the TRACK pin to ground. The relationship between output rise time and TRACK capacitance is given by 430,000 × TRACK A default internal soft-start timer forces ...
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LTC3601 APPLICATIONS INFORMATION The R for both the top and bottom MOSFETs can be DS(ON) obtained from the Typical Performance Characteristics 2 curves. Thus to obtain I R loss “I R LOSS” · ...
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APPLICATIONS INFORMATION From the previous section, I GATECHG 4MHz, and the spec table lists the typical I Therefore, the total power dissipation due to resistive losses and LDO losses is • • (I ...
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LTC3601 APPLICATIONS INFORMATION V IN PGND VIAS TO GROUND PLANE C VIA OUT VIAS GROUND 1 PLANE BOOST OUT ...
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APPLICATIONS INFORMATION V OUT SW PGND OUT IN PIN BOOST C FWD C R2 INTVCC VIA TO R1 INTV CC VIA TO V OUT Figure 6. MSE Layout Example LTC3601 VIA TO ...
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LTC3601 APPLICATIONS INFORMATION Design Example As a design example, consider using the LTC3601 in an application with the following specifi cations 12V 1.8V OUT OUT(MAX) 10mA 1MHz Because effi ciency is important ...
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TYPICAL APPLICATIONS V IN 12V C IN 22μF 2.2μF 10k 270pF 12V Input to 1.8V Output at 4MHz Synchronized Frequency with 6V UVLO and 4.3ms Soft-Start V BOOST IN 0.1μF 154k L1 0.68μH RUN SW 40k V ON LTC3601 INTV ...
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LTC3601 TYPICAL APPLICATIONS V IN 8.4V C1 47μF 22 8.4V Input to 3.3V Output at 2MHz Operating Frequency Using Forced Continuous Mode C2 2.2μF V INTV IN CC RUN ITH RT PGOOD MODE/SYNC TRACK BOOST L1 0.1μF LTC3601 2.2μH SW ...
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PACKAGE DESCRIPTION 3.50 0.05 1.45 0.05 (4 SIDES) 2.10 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING CONFORMS TO JEDEC PACKAGE OUTLINE MO-220 VARIATION (WEED-2) 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS ...
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LTC3601 PACKAGE DESCRIPTION 2.845 0.102 (.112 .004) 5.23 (.206) MIN 0.305 0.038 (.0120 .0015) TYP RECOMMENDED SOLDER PAD LAYOUT DETAIL “A” 0.254 (.010) GAUGE PLANE DETAIL “A” 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. ...
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... Updated Equation in Applications Information Section Updated Related Parts 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. LTC3601 ...
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... V = 0.6V 75μA, IN OUT(MIN 4.5V to 15V 0.6V 75μA, IN OUT(MIN 3.6V to 15V 0.6V 300μA, IN OUT(MIN 4.5V to 15V 0.6V 2mA, IN OUT(MIN 24V 0.6V 900μA, IN OUT(MIN 32V 0.6V 900μA, IN OUT(MIN) Q 3601fa LT 0410 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2009 ...