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LM22675QMRX-5.0 数据表(PDF) 1 Page - Texas Instruments |
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LM22675QMRX-5.0 数据表(HTML) 1 Page - Texas Instruments |
1 / 23 page LM22675-ADJ VIN EN SW BOOT FB GND VIN VOUT LM22675 www.ti.com SNVS591K – SEPTEMBER 2008 – REVISED MARCH 2013 LM22675/LM22675Q 42V, 1A SIMPLE SWITCHER® Step-Down Voltage Regulator with Features Check for Samples: LM22675 1 FEATURES DESCRIPTION The LM22675 switching regulator provides all of the 23 • Wide Input Voltage Range: 4.5V to 42V functions necessary to implement an efficient high • Internally Compensated Voltage Mode Control voltage step-down (buck) regulator using a minimum • Stable with Low ESR Ceramic Capacitors of external components. This easy to use regulator incorporates a 42V N-channel MOSFET switch • 200 m Ω N-Channel MOSFET capable of providing up to 1A of load current. • Output Voltage Options: Excellent line and load regulation along with high – -ADJ (Outputs as Low as 1.285V) efficiency (>90%) are featured. Voltage mode control offers short minimum on-time, allowing the widest – -5.0 (Output Fixed to 5V) ratio between input and output voltages. Internal loop • ±1.5% Feedback Reference Accuracy compensation means that the user is free from the • Switching Frequency of 500 kHz tedious task of calculating the loop compensation components. Fixed 5V output and adjustable output • -40°C to 125°C Operating Junction voltage options are available. A switching frequency Temperature Range of 500 kHz allows for small external components and • Precision Enable Pin good transient response. A precision enable input • Integrated Boot-Strap Diode allows simplification of regulator control and system power sequencing. In shutdown mode the regulator • Integrated Soft-Start draws only 25 µA (typ.). Built in soft-start (500µs, typ) • Fully WEBENCH® Enabled saves external components. The LM22675 also has • Step-Down and Inverting Buck-Boost built in thermal shutdown, and current limiting to Applications protect against accidental overloads. • LM22675Q is an Automotive Grade Product The LM22675 is a member of Texas Instruments' that is AEC-Q100 Grade 1 Qualified (-40°C to SIMPLE SWITCHER® family. The SIMPLE +125°C Operating Junction Temperature) SWITCHER concept provides for an easy to use complete design using a minimum number of external • SO PowerPAD-8 (Exposed Pad) Package components and the TI WEBENCH design tool. TI's WEBENCH tool includes features such as external APPLICATIONS component calculation, electrical simulation, thermal • Industrial Control simulation, and Build-It boards for easy design-in. • Telecom and Datacom Systems • Embedded Systems • Conversions from Standard 24V, 12V and 5V Input Rails Simplified Application Schematic 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 SIMPLE SWITCHER, WEBENCH are registered trademarks of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2008–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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类似说明 - LM22675QMRX-5.0 |
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