LM2678S-5.0

The LM2678S-5.0 is designed as one kind of high efficiency 5A step-down voltage regulator that can be used in (1)Simple to design, high efficiency (>90%) step-down switching regulators; (2)Efficient system pre-regulator for linear voltage regulators; (3)Battery chargers applications. And this device also has built in thermal shutdown, current limiting and an ON/OFF control input that can power down the regulator to a low 50A quiescent current standby condition.

Features of the LM2678S-5.0 are:1)Efficiency up to 92%; (2)Simple and easy to design with (using off-the-shelf external components); (3)120 mW DMOS output switch; (4)3.3V, 5V and 12V fixed output and adjustable (1.2V to 37V ) versions; (5)50A standby current when switched OFF; (6)±2%maximum output tolerance over full line and load conditions; (7)Wide input voltage range: 8V to 40V; (8)260 KHz fixed frequency internal oscillator; (9)-40 to +125°C operating junction temperature range.

The absolute maximum ratings of the LM2678S-5.0 can be summarized as:(1)Input Supply Voltage: 45 V;(2)ON/OFF Pin Voltage: -0.1V to 6V;(3)Switch Voltage to Ground: -1V to VIN;(4)Boost Pin Voltage: VSW + 8V;(5)Feedback Pin Voltage: -0.3V to 14V;(6)Power Dissipation: Internally Limited;(7)ESD: 2 kV;(8)Storage Temperature Range: -65°C to 150°C;(9)Soldering Temperature: 4 sec, 260°C or 10 sec, 240°C. If you want to know more information about it, please download the datasheet in www.seekic.com or www.chinaicmart.com .