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LM22672 Fiches technique(PDF) 1 Page - Texas Instruments |
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LM22672 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 30 page LM22672-ADJ VIN EN SW BOOT FB GND VIN VOUT RT/SYNC SS Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM22672, LM22672-Q1 SNVS588M – SEPTEMBER 2008 – REVISED NOVEMBER 2014 LM22672/-Q1 42-V, 1-A SIMPLE SWITCHER® Step-Down Voltage Regulator with Features 1 Features 3 Description The LM22672 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 1 A 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 • 500 kHz Default Switching Frequency tedious task of calculating the loop compensation • Adjustable Switching Frequency and components. Fixed 5 V output and adjustable output Synchronization voltage options are available. • –40°C to 125°C Junction Temperature Range The default switching frequency is set at 500 kHz • Precision Enable Input allowing for small external components and good • Integrated Boot-Strap Diode transient response. In addition, the frequency can be adjusted over a range of 200 kHz to 1 MHz with a • Adjustable Soft-Start single external resistor. The internal oscillator can be • Fully WEBENCH® Enabled synchronized to a system clock or to the oscillator of • LM22672-Q1 is an Automotive Grade Product another regulator. A precision enable input allows that is AEC-Q100 Grade 1 Qualified (–40°C to simplification of regulator control and system power +125°C Junction Temperature) sequencing. In shutdown mode the regulator draws only 25 µA (typ). An adjustable soft-start feature is • SO PowerPAD (Exposed Pad) provided through the selection of a single external capacitor. The LM22672 also has built in thermal 2 Applications shutdown, and current limiting to protect against • Industrial Control accidental overloads. • Telecom and Datacom Systems The LM22672 is a member of Texas Instruments' • Embedded Systems SIMPLE SWITCHER® family. The SIMPLE SWITCHER® concept provides for an easy to use • Conversions from Standard 24 V, 12 V and 5 V complete design using a minimum number of external Input Rails components and the TI WEBENCH® design tool. TI's WEBENCH® tool includes features such as external Simplified Application Schematic component calculation, electrical simulation, thermal simulation, and Build-It boards for easy design-in. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM22672, HSOP (8) 4.89 mm x 3.90 mm LM22672-Q1 (1) For all available packages, see the orderable addendum at the end of the data sheet. 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. |
Numéro de pièce similaire - LM22672_15 |
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Description similaire - LM22672_15 |
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