LM2679S-5.0

regulator, TO-263-7, 5A

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Price:: US $1.50~3.00 / piece [Get Latest Price]

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PartNumber:: LM2679S-5.0

Brand:: National Semiconductor - NS | Pack: TO | D/C: 10+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

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Products Upload time: 2011-06-30

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Product Summary

The LM2679S-5.0 is a regulator. It provides all of the active functions for a step-down (buck) switching regulator capable of driving up to 5A 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 LM2679S-5.0 consists of fixed output voltages of 3.3V, 5V and 12V and an adjustable output version. The applications of the LM2679S-5.0 include Simple to design, high efficiency (>90%) step-down switching regulators, Efficient system pre-regulator for linear voltage regulators and Battery chargers.

Parametrics

LM2679S-5.0 absolute maximum ratings: (1)Input Supply Voltage: 45V; (2)Softstart 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 to 150℃; (9)Soldering Temperature, Wave: 4 sec, 260℃; Infrared 10 sec, 240℃; Vapor Phase: 75 sec, 219℃.

Features

LM2679S-5.0 features: (1)Efficiency up to 92%; (2)Simple and easy to design with (using off-the-shelf external components); (3)Resistor programmable peak current limit over a range of 3A to 7A; (4)120 mW DMOS output switch; (5)3.3V, 5V and 12V fixed output and adjustable (1.2V to 37V ) versions; (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)Softstart capability; (10)-40 to +125℃ operating junction temperature range.