LTC1872ES6#TRPBF Linear Technology, LTC1872ES6#TRPBF Datasheet
LTC1872ES6#TRPBF
Specifications of LTC1872ES6#TRPBF
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LTC1872ES6#TRPBF Summary of contents
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... In shutdown, the device draws a mere 8 A. The high 550kHz constant operating frequency allows the use of a small external inductor. The LTC1872 is available in a small footprint 6-lead SOT-23. , LTC and LT are registered trademarks of Linear Technology Corporation. Burst Mode is a trademark of Linear Technology Corporation 3.3V ...
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LTC1872 ABSOLUTE MAXIMUM (Note 1) Input Supply Voltage (V ).........................– 0.3V to 10V IN – SENSE , NGATE Voltages ............ – 0. /RUN Voltages ..............................– 0. NGATE Peak ...
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W U TYPICAL PERFORMANCE CHARACTERISTICS Reference Voltage vs Temperature 825 V = 4.2V IN 820 815 810 805 800 795 790 785 780 775 –55 –35 – 105 125 TEMPERATURE ( C) 1872 G01 Maximum ...
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LTC1872 U U FUNCTIONAL DIAGRA – V SENSE – OSC FREQ FOLDBACK 0.3V – GND 2 U OPERATIO (Refer to Functional Diagram) Main Control Loop The LTC1872 is a constant frequency current ...
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U OPERATIO (Refer to Functional Diagram) Comparator OVP guards against transient overshoots > 7.5% by turning off the external N-channel power MOSFET and keeping it off until the fault is removed. Burst Mode Operation The LTC1872 enters Burst Mode operation ...
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LTC1872 U U APPLICATIONS INFORMATION The basic LTC1872 application circuit is shown in Figure 1. External component selection is driven by the load requirement and begins with the selection of L1 and R (= R1). Next, the power MOSFET and ...
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U U APPLICATIONS INFORMATION Inductor Selection When selecting the inductor, keep in mind that inductor saturation current has to be greater than the current limit set by the current sense resistor. Also, keep in mind that the DC resistance of ...
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LTC1872 U U APPLICATIONS INFORMATION where f is the operating frequency, C capacitance and I is the ripple current in the induc- RIPPLE tor. Manufacturers such as Nichicon, United Chemicon and Sanyo should be considered for high performance through- hole ...
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U U APPLICATIONS INFORMATION For most applications, an 80k resistor is suggested for R1. To prevent stray pickup, locate resistors R1 and R2 close to LTC1872. Efficiency Considerations The efficiency of a switching regulator is equal to the output power ...
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LTC1872 U U APPLICATIONS INFORMATION PC Board Layout Checklist When laying out the printed circuit board, the following checklist should be used to ensure proper operation of the LTC1872. These items are illustrated graphically in the layout diagram in Figure ...
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... D1-D7: CMD333UWC 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. LTC1872 12V/500mA Boost Converter R1 0 ...
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... IN Operation Up to 60V, Fixed Frequency Current Mode 8-Pin N-Channel Drive, 3.5V V 36V Quiescent Current, V Down 95% Efficient, 0.9V V 5V, 550kHz Operation IN V 2.5V to 9.8V 4A, SOT-23 Package IN OUT 10-Lead MSOP Package, 0. 1872f LT/TP 0301 4K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2000 IN OUT ...