Datasheet > NCP4330

NCP4330

更新时间： 2024-11-10 04:13:39

品牌	Logo	应用领域
安森美 - ONSEMI		驱动
页数	文件大小	规格书
18页	113K
描述
Post Regulation Driver

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中文翻译

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数据手册

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NCP4330 数据手册

NCP4330

Post Regulation Driver

The NCP4330 houses a dual MOSFET driver intended to be used as

a companion chip in AC−DC or DC−DC multi−output post regulated

power supplies. Being directly fed by the secondary AC signal, the

device keeps power dissipation to the lowest while reducing the

surrounding part count. Furthermore, the implementation of a

N−channel MOSFET gives NCP4330−based applications a significant

advantage in terms of efficiency.

http://onsemi.com

MARKING

DIAGRAM

Features

• Undervoltage Lockout

• Thermal Shutdown for Overtemperature Protection

• PWM Operation Synchronized to the Converter Frequency

• High Gate Drive Capability

SO−8

D SUFFIX

CASE 751

4330D

ALYW

• Bootstrap for N−MOSFET High−Side Drive

• Over−Lap Management for Soft Switching

• High Efficiency Post−Regulation

• Ideal for Frequencies up to 400 kHz

• This is a Pb−Free Device

4330D = Device Number

= Assembly Location

= Wafer Lot

= Year

= Work Week

Typical Applications

PIN CONNECTIONS

• ATX 3V3 Post−Regulation

• Offline SMPS with MAGAMP Post−Regulation

• Multi−Outputs DC−DC Converters

HS_DRV

BST

GND

LS_DRV

RST

BST

Vref, UVDth

C_ramp

I_ramp

Band−Gap

AR2

(Top View)

HS_DRV

Level

Shifter

Buffer

Undervoltage Detection

UVD

(UVD high if V < 4.9 V)

ORDERING INFORMATION

HS_DRV and

LS_DRV low

†

Device

NCP4330DR2G

Package

Shipping

RST

INVERTER

RESET Block

SO−8

2500 / Tape & Reel

(Pb−Free)

2.5 V/1.5 V

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

Iramp

C_ramp

I_ramp

−

Hysteresis

Comparator

Iramp

AR3

LS_DRV

Buffer

Current

Mirror

GND

Figure 1. Block Diagram

Semiconductor Components Industries, LLC, 2005

Publication Order Number:

August, 2005 − Rev. 0

NCP4330/D

12 3 4 5 6 7...18

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