LTC1434CGN Linear Technology, LTC1434CGN Datasheet
LTC1434CGN
Specifications of LTC1434CGN
Related parts for LTC1434CGN
LTC1434CGN Summary of contents
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... Shutdown Mode Draws Only 15 A Supply Current 1% Reference Accuracy Available in 16- and 20-Lead Narrow SSOP U APPLICATIONS Cellular Telephones Portable Instruments Wireless Modems RF Communications Distributed Power Systems Scanners Battery-Powered Equipment , LTC and LT are registered trademarks of Linear Technology Corporation. Adaptive Power is a trademark of Linear Technology Corporation. U TYPICAL APPLICATION 100 OUT 3 ...
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... Pin Open PROG V = 3.6V to 13V (Note 5), V Pin Open IN PROG I Sinking 5 A (Note Sourcing 5 A (Note 5) TH Voltages PROG + 0.3V) to – 0.3V IN TOP VIEW ORDER PART NUMBER 1 20 PWRV PGND LTC1434CGN LTC1434IGN 4 17 PLLIN 5 16 PLL LPF OSC 7 14 POR OSENSE ...
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ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER I V Input Current PROG PROG Main Control Loop I Input DC Supply Current Q Normal Mode Shutdown, Reference Alive Complete Shutdown V RUN/SS Threshold RUN/SS I Soft Start Current Source RUN/SS Oscillator and Phase-Locked Loop ...
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LTC1433/LTC1434 W U TYPICAL PERFORMANCE CHARACTERISTICS Efficiency of Figure 1 for 100 12V 3.3V OUT ...
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PIN FUNCTIONS (LTC1433/LTC1434) SSW (Pin 1/Pin 2): Drain of the Small P-Channel MOSFET Switch. BSW (Pin 3/Pin 4): Drain of the Large P-Channel MOSFET Switch. SGND (Pin 5): Small-Signal Ground. Must be routed separately from other grounds ...
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LTC1433/LTC1434 U U FUNCTIONAL DIAGRA POR PLL LPF C OSC LBO + LOBAT V LBI REF – 0. 180k RUN/SS 30k + SHDN 6V – SHDN REF V (1.19V) REF AND ...
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U OPERATION (Refer to Functional Diagram) Having only the small MOSFET on with low load current reduces switching and gate charge losses, hence boosting efficiency. For the device to go into low current mode, two conditions must be satisfied: the ...
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LTC1433/LTC1434 U U APPLICATIONS INFORMATION 700 600 V = 2.5V PLLLPF 500 400 300 V PLLLPF 200 PLLLPF 100 100 CAPACITANCE ON C PIN (pF) OSC Figure 2. Selecting C for Oscillator Frequency OSC ...
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U U APPLICATIONS INFORMATION Ferrite designs have very low core loss and are preferred at high switching frequencies, so design goals can con- centrate on copper loss and preventing saturation. Ferrite core material saturates “hard,” which means that induc- tance ...
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LTC1433/LTC1434 U U APPLICATIONS INFORMATION Efficiency Considerations Since there are two separate pins for the drain of the small and large P-channel switch, we could utilize two induc- tors to further enhance the efficiency of the regulator over the low ...
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U U APPLICATIONS INFORMATION Power-On Reset Function (POR) The power-on reset function monitors the output voltage and turns on an open-drain device when it is out of regulation. An external pull-up resistor is required on the POR pin. When power ...
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LTC1433/LTC1434 U U APPLICATIONS INFORMATION 1. 0. 0.5 1.0 1.5 V (V) PLLLPF Figure 9. Relationship Between Oscillator Frequency and Voltage at PLL LPF Pin EXTERNAL R FREQUENCY 2.4V PHASE DETECTOR PLL LPF PLLIN DIGITAL ...
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U U APPLICATIONS INFORMATION further reducing the current The low side of the resistive divider should connect to SGND. PC Board Layout Checklist When laying out the printed circuit board, the following checklist should be used to ...
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LTC1433/LTC1434 U U APPLICATIONS INFORMATION C will require an RMS current rating of at least 0. temperature and C will require an ESR of less than OUT 0. most of the applications, the requirements for these ...
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U TYPICAL APPLICATIONS L1 D1 100 OUT + 100 F* 10V D1: MOTOROLA MBRS0520LT3 D2: MOTOROLA MBRS130LT3 L1: COILCRAFT DT1608C SERIES L2: SUMIDA CD54 SERIES 100 F* 10V D1 V OUT ...
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LTC1433/LTC1434 U TYPICAL APPLICATIONS + 100 F* 16V V OUT – – – ( OUT(MAX) – 3 180 – 4 300 – 5 400 – 6 540 – 7 680 D1: ...
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U TYPICAL APPLICATIONS D1 L1B • 47 F** 100 H • V OUT 12V 301k OUT 20V –12V 34k 100pF AVX TPSE686M020R0150 ** WIMA MKS2 L1B 3 TOP VIEW 4 L1B D1, ...
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LTC1433/LTC1434 PACKAGE DESCRIPTIO 0.007 – 0.0098 (0.178 – 0.249) 0.016 – 0.050 (0.406 – 1.270) * DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH ...
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... FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 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. ...
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... Dual High Efficiency Synchronous Step-Down Controller LTC1539 Dual High Efficiency Low Noise Synchronous Step-Down Controller LTC1627 High Efficiency Monolithic Synchronous DC/DC Converter Burst Mode is a trademark of Linear Technology Corporation. Linear Technology Corporation 20 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com ...