LM2676SDX-ADJ Datasheet

SIMPLE SWITCHER® High Efficiency 3A Step-Down Voltage Regulator


General Description
The LM2676 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 3A 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 3.3V, 5V and 12V and an adjustable output version.

■ Efficiency up to 94%
■ Simple and easy to design with (using off-the-shelf
   external components)
■ 150 mΩ DMOS output switch
■ 3.3V, 5V and 12V fixed output and adjustable (1.2V to
   37V ) versions
■ 50µA standby current when switched OFF
■ ±2%maximum output tolerance over full line and load
■ Wide input voltage range: 8V to 40V
■ 260 KHz fixed frequency internal oscillator
■ −40 to +125˚C operating junction temperature range

■ Simple to design, high efficiency (>90%) step-down
   switching regulators
■ Efficient system pre-regulator for linear voltage
■ Battery chargers



Manufacturer information

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