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LM22674 bảng dữ liệu(PDF) 1 Page - Texas Instruments |
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LM22674 bảng dữ liệu(HTML) 1 Page - Texas Instruments |
1 / 26 page LM22674-ADJ VIN EN SW BOOT FB GND VIN VOUT Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM22674, LM22674-Q1 SNVS590M – SEPTEMBER 2008 – REVISED NOVEMBER 2014 LM22674/-Q1 42 V, 500 mA SIMPLE SWITCHER® Step-Down Voltage Regulator with Features 1 Features 3 Description The LM22674 switching regulator provides all of the 1 • Wide Input Voltage Range: 4.5 V to 42 V 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 42 V N-channel MOSFET switch • 200 m Ω N-Channel MOSFET capable of providing up to 500 mA of load current. • Output Voltage Options: Excellent line and load regulation along with high -ADJ (Outputs as Low as 1.285 V) efficiency (> 90%) are featured. Voltage mode control -5.0 (Output Fixed to 5 V) offers short minimum on-time, allowing the widest • ±1.5% Feedback Reference Accuracy ratio between input and output voltages. Internal loop compensation means that the user is free from the • Switching Frequency of 500 kHz tedious task of calculating the loop compensation • –40°C to 125°C Operating Junction Temperature components. Fixed 5 V output and adjustable output Range voltage options are available. A switching frequency • Precision Enable Pin of 500 kHz allows for small external components and good transient response. A precision enable input • Integrated Boot-Strap Diode allows simplification of regulator control and system • Integrated Soft-Start power sequencing. In shutdown mode the regulator • Fully WEBENCH® Enabled draws only 25 µA (typ). Built in soft-start (500 µs, typ) saves external components. The LM22674 also has • LM22674-Q1 is an Automotive Grade Product built in thermal shutdown, and current limiting to that is AEC-Q100 Grade 1 Qualified (–40°C to protect against accidental overloads. +125°C Operating Junction Temperature) • SO PowerPAD (Exposed Pad) The LM22674 device is a member of Texas Instruments' SIMPLE SWITCHER® family. The SIMPLE SWITCHER® concept provides for an easy 2 Applications to use complete design using a minimum number of • Industrial Control external components and the TI WEBENCH® design • Telecom and Datacom Systems tool. TI's WEBENCH® tool includes features such as external component calculation, electrical simulation, • Embedded Systems thermal simulation, and Build-It boards for easy • Conversions from Standard 24 V, 12 V and 5 V design-in. Input Rails Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM22674 HSOP (8) 4.89 mm x 3.90 mm LM22674-Q1 (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Application Schematic 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. |
Số phần tương tự - LM22674_15 |
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Mô tả tương tự - LM22674_15 |
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