LM2678S-12

step-down voltage regulator, 5A, 8V to 40V, TO

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Price:: US $0.67~0.85 / piece [Get Latest Price]

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Qty (lots)	Price/lot
10 ~ 200 :	0.85 / Piece
201 ~ 500 :	0.75 / Piece
501 ~ 1500 :	0.67 / Piece

PartNumber:: LM2678S-12

Brand:: NEC - Nec | Pack: TO | D/C: 09+

Availability:: Supply Ability: 2/Day Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

Quantity:: piece

Total Price:: US $0

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Products Upload time: 2013-03-28

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Part Number:LM2678S-12
US $0.67 - 0.85
Quantity:

piece

Product Summary

The LM2678S-12 regulator is a monolithic integrated circuit which provides all of the active functions for a ep-down(buck switching regulato rcapable of driving up to 5A loads with excellent line and load regulation characteristics. The LM2678S-12 also has built in thermal shutdown, current limiting and an ON/OFF control input that can power down the regulator to a low 50μA quiescent current standby condition. Applications of the LM2678S-12 include: Simple to design, high efficiency ( 90%) step-down switching regulators, Efficient system pre-regulator for linear voltage regulators, Batterychargers.

Parametrics

LM2678S-12 absolute maximum ratings: (1) Input Supply Voltage: 45V; (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: 2kV; (8) Storage Temperature Range: -65°C to 150°C; (9) Soldering Temperature Wave: 4 sec, 260°C, Infared: 10 sec, 240°C, Vapor Phase: 75 sec, 219°C. (10) Supply Voltage: 8V to 40V; (11) )Junction Temperature Range(Tj) : -40°C to 125°C.

Features

LM2678S-12 features: (1) Efficiency up to 92%; (2) Simple and easy to design with(using off-the-shelf externalcomponents) ; (3) 120mΩ output switch; (4) 3.3V,5V and 12V fixed output and adjustable(1.2V to 37V)versions; (5) 50μA standby current when switched OFF; (6) ±2% maximum output tolerance over full line and load conditions; (7) Wide input voltage range: 8Vto40V; (8) 260KHz fixed frequency internal oscillator; (9) -40 to +125°C operating junction temperature range.