NCV1117ST12T3G(2004) Просмотр технического описания (PDF) - ON Semiconductor

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NCV1117ST12T3G
(Rev.:2004)

1.0 A Low-Dropout Positive Fixed and Adjustable Voltage Regulators

ON Semiconductor 

NCP1117, NCV1117

1.0 A Low−Dropout Positive

Fixed and Adjustable

Voltage Regulators

The NCP1117 series are low dropout positive voltage regulators that

are capable of providing an output current that is in excess of 1.0 A

with a maximum dropout voltage of 1.2 V at 800 mA over

temperature. This series contains eight fixed output voltages of 1.5 V,

1.8 V, 2.0 V, 2.5 V, 2.85 V, 3.3 V, 5.0 V, and 12 V that have no

minimum load requirement to maintain regulation. Also included is an

adjustable output version that can be programmed from 1.25 V to

18.8 V with two external resistors. On chip trimming adjusts the

reference/output voltage to within ±1.0% accuracy. Internal protection

features consist of output current limiting, safe operating area

compensation, and thermal shutdown. The NCP1117 series can

operate with up to 20 V input. Devices are available in SOT−223 and

DPAK packages.

http://onsemi.com

1

3

Tab

123

(Top View)

SOT−223

ST SUFFIX

CASE 318H

Pin: 1. Adjust/Ground

2. Output

3. Input

Heatsink tab is connected to Pin 2.

Features

• Output Current in Excess of 1.0 A

• 1.2 V Maximum Dropout Voltage at 800 mA Over Temperature

• Fixed Output Voltages of 1.5 V, 1.8 V, 2.0 V, 2.5 V, 2.85 V, 3.3 V,

5.0 V, and 12 V

• Adjustable Output Voltage Option

• No Minimum Load Requirement for Fixed Voltage Output Devices

• Reference/Output Voltage Trimmed to ±1.0%

• Current Limit, Safe Operating and Thermal Shutdown Protection

• Operation to 20 V Input

• NCV Prefix for Automotive and Other Applications Requiring Site

and Control Changes

• Pb−Free Packages are Available

Applications

• Consumer and Industrial Equipment Point of Regulation

• Active SCSI Termination for 2.85 V Version

• Switching Power Supply Post Regulation

• Hard Drive Controllers

• Battery Chargers

1

3

Tab

123

(Top View)

DPAK

DT SUFFIX

CASE 369C

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on pages 11 and 12 of this data sheet.

DEVICE MARKING INFORMATION

See general marking information in the device marking

section on page 13 of this data sheet.

TYPICAL APPLICATIONS

110 W

Input 3 NCP1117 2 Output

XTXX

10 +

+ 10

mF

1

mF

Figure 1. Fixed

Output Regulator

Input

10

mF

3 NCP1117 2 Output

XTA

+

+ 10

1

mF

3 NCP1117 2

110 W

10 +

mF

XT285

1

+ 22 110 W

mF

4.75 V +

to

5.25 V

110 W

18 to 27

Lines

Figure 2. Adjustable

Output Regulator

Figure 3. Active SCSI Bus Terminator

© Semiconductor Components Industries, LLC, 2004

1

July, 2004 − Rev. 11

Publication Order Number:

NCP1117/D

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