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LM2679S-3.3 датащи(PDF) 1 Page - Texas Instruments |
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LM2679S-3.3 датащи(HTML) 1 Page - Texas Instruments |
1 / 37 page Voltage 5V/5A COUT 2 x 180 PF/16V 22 PH L Feedback Boost 6TQ045S Ground Current VIN Softstart 1 nF + Voltage 8V to 40V Input LM2679 - 5.0 Output Switch Output 0.01 PF + Limit Adjust 5.6k 0.47 PF + + + CIN 3 x 15 PF/50V = 37,125 RADJ I CL Copyright © 2016, Texas Instruments Incorporated Product Folder Sample & Buy Technical Documents Tools & Software Support & Community 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. LM2679 SNVS026O – MARCH 2000 – REVISED JUNE 2016 LM2679 SIMPLE SWITCHER® 5-A Step-Down Voltage Regulator With Adjustable Current Limit 1 1 Features 1 • Efficiency Up to 92% • Simple and Easy to Design Using Off-The-Shelf External Components • Resistor Programmable Peak Current Limit Over a Range of 3 A to 7 A • 120-mΩ DMOS Output Switch • 3.3-V, 5-V, 12-V Fixed Output and Adjustable (1.2 V to 37 V) Versions • ±2% Maximum Output Tolerance Over Full Line and Load Conditions • Wide Input Voltage Range: 8 V to 40 V • 260-kHz Fixed Frequency Internal Oscillator • Soft-Start Capability • −40 to 125°C Operating Junction Temperature Range 2 Applications • Simple-to-Design, High Efficiency (>90%) Step-Down Switching Regulators • Efficient System Preregulator for Linear Voltage Regulators • Battery Chargers 3 Description The LM2679 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down (buck) switching regulator capable of driving up to 5-A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low ON- resistance DMOS power switch. The series consists of fixed output voltages of 3.3 V, 5 V, and 12 V and an adjustable output version. The SIMPLE SWITCHER® concept provides for a complete design using a minimum number of external components. A high fixed frequency oscillator (260 kHz) allows the use of physically smaller sized components. A family of standard inductors for use with the LM2679 are available from several manufacturers to greatly simplify the design process. Other features include the ability to reduce the input surge current at power on by adding a soft-start timing capacitor to gradually turn on the regulator. The LM2679 series also has built-in thermal shutdown and resistor programmable current limit of the power MOSFET switch to protect the device and load circuitry under fault conditions. The output voltage is specified to a ±2% tolerance. The clock frequency is controlled to within a ±11% tolerance. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM2679 TO-263 (7) 10.10 mm × 8.89 mm TO-220 (7) 14.986 mm × 10.16 mm VSON (14) 6.00 mm × 5.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application |
Аналогичный номер детали - LM2679S-3.3 |
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Аналогичное описание - LM2679S-3.3 |
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