NCV51411DR2G 查看數據表（PDF） - ON Semiconductor

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NCV51411DR2G

1.5 A, 260 kHz, Low Voltage Buck Regulator with Synchronization Capability

ON Semiconductor 

NCV51411

1.5 A, 260 kHz, Low Voltage

Buck Regulator with

Synchronization Capability

The NCV51411 is a 1.5 A buck regulator IC operating at a

fixed−frequency of 260 kHz. The device uses the V2t control

architecture to provide unmatched transient response, the best overall

regulation and the simplest loop compensation for today’s high−speed

logic. The NCV51411 accommodates input voltages from 4.5 V to

40 V and contains synchronization circuitry.

The on−chip NPN transistor is capable of providing a minimum of

1.5 A of output current, and is biased by an external “boost” capacitor

to ensure saturation, thus minimizing on−chip power dissipation.

Protection circuitry includes thermal shutdown, cycle−by−cycle

current limiting and frequency foldback. The NCV51411 is

functionally pin−compatible with the LT1375.

Features

• V2 Architecture Provides Ultra−Fast Transient Response, Improved

Regulation and Simplified Design

• 2.0% Error Amp Reference Voltage Tolerance

• Switch Frequency Decrease of 4:1 in Short Circuit Conditions

Reduces Short Circuit Power Dissipation

• BOOST Lead Allows “Bootstrapped” Operation to Maximize

Efficiency

• Sync Function for Parallel Supply Operation or Noise Minimization

• Shutdown Pin Provides Power−Down Option

• 85 mA Quiescent Current During Power−Down

• Thermal Shutdown

• Soft−Start

• Pin Compatible with LT1375 (SO−8 Version)

• NCV Prefix for Automotive and Other Applications Requiring Site

and Change Controls

• Pb−Free Packages are Available

http://onsemi.com

8

1

SO−8

D SUFFIX

CASE 751

MARKING

DIAGRAMS

8

51411

ALYWE

G

1

16

1

16

SO−16W EP

PW SUFFIX

CASE 751AG

NCV51411

AWLYYWWG

1

1

18

18

18−LEAD DFN NCV51411

1

MN SUFFIX AWLYYWW G

CASE 505

G

A

= Assembly Location

L, WL = Wafer Lot

Y, YY = Year

W, WW = Work Week

E

= Automotive Grade

G or G = Pb−Free Package

(Note: Microdot may be in either location)

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 13 of this data sheet.

© Semiconductor Components Industries, LLC, 2010

1

May, 2010 − Rev. 15

Publication Order Number:

NCV51411/D

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