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NCP5666

3.0 A, Low Dropout Linear Regulator with Enable

Unspecified 

NCP5666

3.0 A, Low Dropout Linear

Regulator with Enable

The NCP5666 is a high performance, low dropout linear regulator

designed for high power applications that require up to 3.0 A current

with Enable. A thermally robust, 5 pin D2PAK, combined with an

architecture that offers low ground current (independent of load),

provides for a superior high-current LDO solution.

Features

•ă±1% Output Voltage Accuracy

•ăUltra-Fast Transient Response (Settling Time: 1-3 ms)

•ăLow Noise Without Bypass Capacitor (57 mVrms)

•ăLow Ground Current Independent of Load (3.0 mA Maximum)

•ăEnable Function

•ăCurrent Limit Protection

•ăThermal Protection

•ăPower Supply Rejection Ratio > 65 dB

•ăStable with Aluminum, Tantalum and Ceramic Capacitors

•ăPin Compatible with Semtech Device

•ăThis is a Pb-Free Device

Applications

•ăServers

•ăASIC Power Supplies

•ăPost Regulation for Power Supplies

•ăConstant Current Source

•ăNetworking Equipment

•ăGaming and STB Modules

Vin

Cin*

Vin

Vout

NCP5666

Vout

Cout**

Enable

EN

GND

OFF ON

* Cin - 4.7 mF to 220 mF recommended

**Cout - 2.2 mF to 220 mF recommended

See more details in the Application Information section

Figure 1. Typical Application Circuit

http://onsemi.com

MARKING

DIAGRAM

1

5

D2PAK

CASE 936A

NC

5666DSxx

AWLYWWG

xx = Voltage Option

= 25 = 2.5 V

= 50 = 5.0 V

A = Assembly Location

WL = Wafer Lot

Y = Year

WW = Work Week

G = Pb-Free

Tab = GND

Pin 1. Vin

2. EN

3. GND

4. NC

5. Vout

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 8 of this data sheet.

©Ă Semiconductor Components Industries, LLC, 2007

1

October, 2007 - Rev. 1

Publication Order Number:

NCP5666/D

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