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Details for LM2679S-ADJ by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
IC SWITCHING REG 5A ADJ SMD 2679
LM2679S-ADJ image

LM2679S-ADJ by Texas Instruments

IC SWITCHING REG 5A ADJ SMD 2679
Features
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
LM2679S-ADJ image
RoHS Compliant
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 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.
Specifications
Topology:
Buck (Step Down)
Input Voltage Min:
8V
Input Voltage Max:
40V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
TO-263
No. of Pins:
7Pins
Output Current:
5A
Output Voltage Min:
1.2V
Output Voltage Max:
37V
Switching Frequency:
260kHz
Operating Temperature Max:
125°C
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 3 - 168 hours
SVHC:
No SVHC (27-Jun-2018)
Accuracy %:
2%
Adjustable Output Voltage Min:
1.285V
Base Number:
2679
Frequency:
260kHz
IC Generic Number:
2679
Operating Temperature Min:
-40°C
Operating Temperature Range:
-40°C to +125°C
Output Current Max:
5A
Output Voltage:
37V
Power Supply IC Type:
Step-down switching regulator
Primary Input Voltage:
40V
Supply Voltage Min:
8V
Voltage Regulator Type:
Switching Step Down (Buck)
Alternate Descriptions
Conv DC-DC Single Step Down 8V to 40V 8-Pin(7+Tab) TO-263 Rail Avnet America
Conv DC-DC Single Step Down 8V to 40V 8-Pin(7+Tab) TO-263 Rail Avnet Europe