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LM46002PWPRG4 Datasheet(PDF) 1 Page - Texas Instruments |
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LM46002PWPRG4 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 54 page  0 10 20 30 40 50 60 70 80 0 200 400 600 800 1000 Frequency (MHz) Evaluation Board EN 55022 Class B Limit EN 55022 Class A Limit C001 SW VIN PGND CBOOT VCC BIAS SYNC RT ENABLE SS/TRK AGND FB LM46002 VIN COUT CBOOT CIN CVCC VOUT CBIAS RFBT RFBB CFF L PGOOD Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design 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. LM46002 SNVSA13C – APRIL 2014 – REVISED APRIL 2019 LM46002 3.5-V to 60-V, 2-A Synchronous Step-Down Voltage Converter 1 1 Features 1 • 27-µA Quiescent current in regulation • High efficiency at light load (DCM and PFM) • Meets EN55022/CISPR 22 EMI standards • Integrated synchronous rectification • Adjustable frequency range: 200 kHz to 2.2 MHz (500 kHz default) • Frequency synchronization to external clock • Internal compensation • Stable with almost any combination of ceramic, polymer, tantalum, and aluminum capacitors • Power-good flag • Soft start into prebiased load • Internal soft start: 4.1 ms • Extendable soft-start time by external capacitor • Output voltage tracking capability • Precision enable to program system UVLO • Output short-circuit protection with hiccup mode • Overtemperature thermal shutdown protection • Create a custom design using the LM46002 with the WEBENCH® Power Designer 2 Applications • Industrial power supplies • Telecommunications systems • Sub-AM band automotive • Commercial vehicle power supplies • General-purpose wide VIN regulation • High-efficiency point-of-load regulation 3 Description The LM46002 regulator is an easy-to-use synchronous step-down DC/DC converter capable of driving up to 2 A of load current from an input voltage ranging from 3.5 V to 60 V. The LM46002 provides exceptional efficiency, output accuracy and drop-out voltage in a very small solution size. An extended family is available in various load current options and 36-V maximum input voltage in pin-to-pin compatible packages, including LM46001, LM46000, LM43603, LM43602, LM43601 and LM43600. Peak-current- mode control is employed to achieve simple control- loop compensation and cycle-by-cycle current limiting. Optional features such as programmable switching frequency, synchronization, power-good flag, precision enable, internal soft start, extendable soft start, and tracking provide a flexible and easy-to- use platform for a wide range of applications. Discontinuous conduction and automatic frequency reduction at light loads improve light load efficiency. The family requires few external components. Pin arrangement allows simple, optimum PCB layout. Protection features include thermal shutdown, VCC undervoltage lockout, cycle-by-cycle current limit, and output short-circuit protection. The LM46002 device is available in the 16-lead HTSSOP / PWP package (6.6 mm × 5.1 mm × 1.2 mm) with 0.65-mm lead pitch. Device Information PART NUMBER PACKAGE BODY SIZE LM46002 HTSSOP (16) 6.60 mm × 5.10 mm space space space space Simplified Schematic Radiated Emission Graph VIN = 24 V, VOUT = 3.3 V, FS= 500 kHz, IOUT = 2 A |
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