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LM46002A-Q1 Datasheet(PDF) 1 Page - Texas Instruments |
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LM46002A-Q1 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 60 page  SW VIN PGND CBOOT VCC BIAS SYNC RT ENABLE SS/TRK AGND FB LM46002-Q1 VIN COUT CBOOT CIN CVCC VOUT CBIAS RFBT RFBB CFF L PGOOD 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 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-Q1, LM46002A-Q1 SNVSAA2B – JULY 2015 – REVISED JULY 2017 LM46002-Q1 3.5-V to 60-V, 2-A, Synchronous Step-Down Voltage Converter 1 1 Features 1 • Qualified for Automotive Applications • AEC-Q100 Qualified With the Following Results: – Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature • 27-µA Quiescent Current in Regulation • High Efficiency at Light Load (DCM and PFM) • Tested to 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 Pre-Biased Load • Internal and Adjustable External Soft Start • 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-Q1 With the WEBENCH® Power Designer 2 Applications • Sub-AM Band 12-V and 24-V Automotive • Telecommunications Systems • Commercial Vehicle Power Supplies • General Purpose Wide VIN Regulation • High Efficiency Point-Of-Load Regulation 3 Description The LM46002-Q1 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-Q1 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. The device is pin-to-pin compatible package with LM4360x and LM4600x family. 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 LM46002A-Q1 version is optimized for PFM operation and recommended for new designs. The LM46002-Q1 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(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM46002-Q1 HTSSOP (16) 6.60 mm × 5.10 mm LM46002A-Q1 HTSSOP (16) 6.60 mm × 5.10 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. white white Simplified Schematic Radiated Emission Graph VIN = 24 V, VOUT = 3.3 V, FS = 500 kHz, IOUT = 2 A |
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