Datasheet > NCP3126

NCP3126

更新时间： 2024-11-24 10:28:11

品牌	Logo	应用领域
安森美 - ONSEMI		转换器开关
页数	文件大小	规格书
23页	301K
描述
3 A Synchronous PWM Switching Converter

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NCP3126 数据手册

NCP3126

3 A Synchronous PWM

Switching Converter

The NCP3126 is a flexible synchronous PWM Switching Buck

Regulator. The NCP3126 is capable of producing output voltages as

low as 0.8 V. The NCP3126 also incorporates voltage mode control.

To reduce the number of external components, a number of features

are internally set including switching frequency. The NCP3126 is

currently available in an SOIC−8 package.

http://onsemi.com

MARKING

DIAGRAM

Features

• 4.5 V to 13.2 V Operating Input Voltage Range

• 85 mW High−Side, 65 mW Low−Side Switches

• Output Voltage Adjustable to 0.8 V

• 3 A Continuous Output Current

• Fixed 350 kHz PWM Operation

• 1.0% Initial Output Accuracy

• 75% Max Duty Ratio

3126

ALYWXG

SOIC−8 NB

D SUFFIX

CASE 751

3126

= Specific Device Code

= Assembly Location

= Wafer Lot

= Year

• Short−Circuit Protection

= Work Week

= Pb−Free Package

• Programmable Current Limit

• This is a Pb−Free Device

PIN CONNECTIONS

Typical Application

• Set Top Boxes

NCP3126

PGND

VSW

ISET

VIN

• DVD Drives and HDD

• LCD Monitors and TVs

• Cable Modems

COMP

AGND

BST

• Telecom / Networking / Datacom Equipment

(Top View)

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 22 of this data sheet.

100

5 V

4.5 V − 13.2 V

3.3 V

BST

VIN

VSW

PGND

NCP3126

ISET

FB1

COMP

AGND

0.5

1.5

2.5

OUTPUT CURRENT (A)

Figure 1. Typical Application Circuit

Figure 2. Efficiency (V_IN= 12 V) vs. Load Current

Publication Order Number:

May, 2010 − Rev. 1

NCP3126/D

12 3 4 5 6 7...23

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