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Details for LM2679T-ADJ/NOPB by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
LM2679T-ADJ/NOPB image

LM2679T-ADJ/NOPB by Texas Instruments

120-mu03a9 DMOS Output Switch
260-kHz Fixed Frequency Internal Oscillator
3.3-V, 5-V, 12-V Fixed Output and Adjustable (1.2 V to 37 V) Versions
Efficiency Up to 92%
Resistor Programmable Peak Current Limit Over a Range of 3 A to 7 A
Simple and Easy to Design Using Off-The-Shelf External Components
Soft-Start Capability
Wide Input Voltage Range: 8 V to 40 V
u00b12% Maximum Output Tolerance Over Full Line and Load Conditions
u221240 to 125u00b0C Operating Junction Temperature
Part Information
LM2679T-ADJ/NOPB image
RoHS Compliant
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 ONresistance 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.
Buck (Step Down)
Input Voltage Min:
Input Voltage Max:
No. of Outputs:
DC / DC Converter IC Case:
No. of Pins:
Output Current:
Output Voltage Min:
Alternate Descriptions
Conv DC-DC Single Step Down 8V to 40V 7-Pin(7+Tab) TO-220 Rail Avnet America
PMIC; DC/DC converter; Uin:8÷40V; Uout:1.2÷37V; TO220-7; buck Transfer Multisort Elektronik
Conv DC-DC Single Step Down 8V to 40V 7-Pin(7+Tab) TO-220 Rail Avnet Europe
Switching Regulator [Texas Instruments] LM2679T-ADJ/NOPB Switching Regulator Distrelec