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LM2678SX-ADJ/NOPB ACTIVE

8V to 40V, 5A SIMPLE SWITCHER® buck converter with high efficiency

Inventory: 15,457
 

Quality information

RoHS Exempt
REACH Affected
Lead finish / Ball material SN
MSL rating / Peak reflow Level-3-245C-168 HR
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View

Packaging information

Package | Pins Package qty | Carrier Operating temperature range (°C)
TO-263 (KTW) | 7 500 | LARGE T&R
-40 to 125
Package | Pins TO-263 (KTW) | 7
Package qty | Carrier 500 | LARGE T&R
Operating temperature range (°C) -40 to 125
View TI packaging information

Features for the LM2678

  • Efficiency Up to 92%
  • Simple and Easy to Design Using Off-the-Shelf External Components
  • 120-mΩ DMOS Output Switch
  • 3.3-V, 5-V, and 12-V Fixed Output and Adjustable (1.2 V to 37 V) Versions
  • 50-µA Standby Current When Switched OFF
  • ±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
  • –40 to 125°C Operating Junction Temperature Range
  • Create a Custom Design Using the LM2678 With the WEBENCH® Power Designer

Description for the LM2678

The LM2678 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 LM2678 are available from several manufacturers to greatly simplify the design process.

The LM2678 series also has built-in thermal shutdown, current limiting, and an ON/OFF control input that can power down the regulator to a low 50-µA quiescent current standby condition. The output voltage is ensured to a ±2% tolerance. The clock frequency is controlled to within a ±11% tolerance.

Pricing


Qty Price (USD)
1-99 $4.048
100-249 $3.300
250-999 $2.594
1,000+ $2.200

Additional package qty | carrier options

Package qty | Carrier 45 | TUBE
Inventory 6,232
Qty | Price (USD) 1ku | $2.640 1-99 $4.858 100-249 $3.960 250-999 $3.113 1,000+ $2.640