DatasheetsPDF.com

LM46001 Dataheets PDF



Part Number LM46001
Manufacturers Texas Instruments
Logo Texas Instruments
Description 1-A Synchronous Step-Down Voltage Converter
Datasheet LM46001 DatasheetLM46001 Datasheet (PDF)

Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design LM46001 SNVSA46B – JUNE 2014 – REVISED JANUARY 2018 LM46001 3.5-V to 60-V, 1-A Synchronous Step-Down Voltage Converter 1 Features •1 24-µA Quiescent Current in Regulation • High Efficiency at Light Load (DCM and PFM) • Meets EN55022/CISPR 22 EMI standards • Integrated Synchronous Rectification • Adjustable Switching Frequency: 200 kHz to 2.2 MHz (500 kHz default) • Frequency Synchronization .

  LM46001   LM46001


Document
Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design LM46001 SNVSA46B – JUNE 2014 – REVISED JANUARY 2018 LM46001 3.5-V to 60-V, 1-A Synchronous Step-Down Voltage Converter 1 Features •1 24-µA Quiescent Current in Regulation • High Efficiency at Light Load (DCM and PFM) • Meets EN55022/CISPR 22 EMI standards • Integrated Synchronous Rectification • Adjustable Switching Frequency: 200 kHz to 2.2 MHz (500 kHz default) • Frequency Synchronization to External Clock • Internal Compensation • Stable With Many Combinations of Ceramic, Polymer, Tantalum, and Aluminum Capacitors • Power-Good Flag • Soft Start into Pre-Biased 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 LM46001 With the WEBENCH® Power Designer 2 Applications • Industrial Power Supplies • Telecommunications Systems • Sub-AM Band 12-V and 24-V Automotive • Commercial Vehicle Power Supplies • General Purpose Wide VIN Regulation • High Efficiency Point-Of-Load Regulation VIN CIN Simplified Schematic VIN SW LM46001 ENABLE PGOOD SS/TRK RT SYNC AGND CBOOT BIAS FB VCC PGND L CBOOT COUT VOUT CBIAS CFF RFBT CVCC RFBB 3 Description The LM46001 regulator is an easy-to-use synchronous step-down DC-DC converter capable of driving up to 1 A of load current from an input voltage ranging from 3.5 V to 60 V. The LM46001 provides exceptional efficiency, output accuracy, and dropout voltage in a very small solution size. An extended family is available in 0.5-A and 2-A load current options in pin-to-pin compatible packages. Peakcurrent-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-touse 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 and 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 LM46001 device is available in the 16-lead HTSSOP package (PWP, 6.6 mm × 5.1 mm × 1.2 mm) with 0.65-mm lead pitch. The device is pin-to-pin compatible with LM46000, LM46002, LM43603, LM43602, LM43601, and LM43600. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM46001 HTSSOP (16) 6.60 mm × 5.10 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. space space space Radiated Emission Graph VOUT = 3.3 V, VIN = 24 V, FS= 500 kHz, IOUT = 1 A dBuV 80 70 60 50 40 30 20 10 30 Vertical Polarization Horizontal Polarization EN 55022 Class B Limit Evaluation Board Emissions 100 Frequency (MHz) 1000 Copyright © 2018, Texas Instruments Incorporated 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. LM46001 SNVSA46B – JUNE 2014 – REVISED JANUARY 2018 www.ti.com Table of Contents 1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Revision History..................................................... 2 5 Pin Configuration and Functions ......................... 3 6 Specifications......................................................... 4 6.1 Absolute Maximum Ratings ...................................... 4 6.2 ESD Ratings.............................................................. 4 6.3 Recommended Operating Conditions....................... 4 6.4 Thermal Information .................................................. 5 6.5 Electrical Characteristics........................................... 5 6.6 Timing Requirements ................................................ 6 6.7 Switching Characteristics .......................................... 7 6.8 Typical Characteristics .............................................. 8 7 Detailed Description ............................................ 14 7.1 Overview ................................................................. 14 7.2 Functional Block Diagram ....................................... 14 7.3 Feature Description................................................. 15 7.4 Device Functional Modes........................................ 24 8 App.


JCA1048D03 LM46001 LM46001-Q1


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)