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LM46001PWPT bảng dữ liệu(PDF) 1 Page - Texas Instruments |
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LM46001PWPT bảng dữ liệu(HTML) 1 Page - Texas Instruments |
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1 / 52 page  SW VIN PGND CBOOT VCC BIAS SYNC RT ENABLE SS/TRK AGND FB LM46001 VIN COUT CBOOT CIN CVCC VOUT CBIAS RFBT RFBB CFF L PGOOD EN 55022 Class B Limit Frequency (MHz) dBuV 80 70 60 50 40 30 20 10 30 Evaluation Board Emissions 1000 100 Vertical Polarization Horizontal Polarization Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM46001 SNVSA46A – JUNE 2014 – REVISED JULY 2014 LM46001 SIMPLE SWITCHER® 3.5 V to 60 V 1 A Synchronous Step-Down Voltage Converter 1 Features 3 Description The LM46001 SIMPLE SWITCHER® regulator is an 1 • 24 µA Quiescent Current in Regulation easy to use synchronous step-down DC-DC • High Efficiency at Light Load (DCM and PFM) converter capable of driving up to 1 A of load current • Meets EN55022/CISPR 22 EMI standards from an input voltage ranging from 3.5 V to 60 V. The LM46001 provides exceptional efficiency, output • Integrated Synchronous Rectification accuracy and drop-out voltage in a very small • Adjustable Switching Frequency: 200 kHz to 2.2 solution size. An extended family is available in 0.5 A MHz (500 kHz default) and 2.0 A load current options in pin-to-pin • Frequency Synchronization to External Clock compatible packages. Peak current mode control is employed to achieve simple control loop • Internal Compensation compensation and cycle-by-cycle current limiting. • Stable with Many Combinations of Ceramic, Optional features such as programmable switching Polymer, Tantalum, and Aluminum Capacitors frequency, synchronization, power-good flag, • Power-Good Flag precision enable, internal soft-start, extendable soft- start, and tracking provide a flexible and easy to use • Soft-Start into Pre-Biased Load platform for a wide range of applications. • Internal Soft-Start: 4.1 ms Discontinuous conduction and automatic frequency • Extendable Soft-Start Time by External Capacitor reduction at light loads improve light load efficiency. • Output Voltage Tracking Capability The family requires few external components and pin arrangement allows simple, optimum PCB layout. • Precision Enable to Program System UVLO Protection features include thermal shutdown, VCC • Output Short Circuit Protection with Hiccup Mode under-voltage lockout, cycle-by-cycle current limit, • Over Temperature Thermal Shutdown Protection and output short circuit protection. The LM46001 device is available in the HTSSOP / PWP 16 leaded 2 Applications package (5.1 mm x 6.6 mm x 1.2 mm) with 0.65 mm lead pitch. Pin to pin compatible with LM46000, • Industrial Power Supplies LM46002, LM43603, LM43602, LM43601, and • Telecommunications Systems LM43600. • Sub-AM Band 12 V and 24 V Automotive Device Information(1) • Commercial Vehicle Power Supplies PART NUMBER PACKAGE BODY SIZE (NOM) • General Purpose Wide VIN Regulation LM46001 HTSSOP (16) 5.1 mm x 6.6 mm • High Efficiency Point-Of-Load Regulation (1) For all available packages, see the orderable addendum at the end of the datasheet. Simplified Schematic Radiated Emission Graph VOUT = 3.3 V, VIN = 24 V, FS= 500 kHz, IOUT = 1 A 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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