Datasheet > NCP1575/D

NCP1575/D

更新时间： 2024-09-19 23:53:27

品牌	Logo	应用领域
其他 - ETC		开关控制器
页数	文件大小	规格书
16页	112K
描述
Low Voltage Synchronous Buck Controller with Adjustable Switching Frequency

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NCP1575/D 数据手册

NCP1575

Low Voltage Synchronous

Buck Controller with

Adjustable Switching

Frequency

http://onsemi.com

The NCP1575 is a low voltage buck controller. It provides the

control for a dc-dc power solution producing an output voltage as low

as 0.980 V over a wide current range. It contains all required circuitry

for a synchronous NFET buck regulator using the V

control

SO-8

D SUFFIX

CASE 751

method to achieve the fastest possible transient response and best

overall regulation. The NCP1575 operates at a default switching

frequency of 200 kHz, but switching frequency is user-programmable

with an additional resistor between R

and ground. This device

OSC

PIN CONNECTIONS AND

MARKING DIAGRAM

provides undervoltage lockout protection, Soft Start, and built-in

adaptive nonoverlap and is assembled in an SO-8 package.

The NCP1575-based solution requires a bias supply of 12 V, and it

can convert from a bulk power supply ranging from 2 V to 12 V.

Conversion from bulk supplies greater than 7 V is best accomplished

by using an external doubler circuit to raise the enhancement voltage

for the external NFET switches.

GND

OSC

GATE(L)

GATE(H)

COMP

Features

= Assembly Location

= Wafer Lot

= Year

• 0.980 V ±1.0% Reference Voltage

• V Control Topology

= Work Week

• 200 ns Transient Response

• Programmable Soft Start

• 40 ns Gate Rise and Fall Times (3.3 nF Load)

ORDERING INFORMATION

• Adaptive FET Nonoverlap Time

• Default 200 kHz Oscillator Frequency (No External

Resistor Required)

Device

Package

Shipping

NCP1575D

98 Units/Rail

SO-8

NCP1575DR2

2500 Tape & Reel

• User-Programmable Oscillator Frequency (One External

Resistor Required)

• Undervoltage Lockout

• On/Off Control Through Use of the COMP Pin

• Overvoltage Protection through Synchronous MOSFETs

• Synchronous N-Channel Buck Design

• “12 V Only” or Dual Supply Operation

Semiconductor Components Industries, LLC, 2003

Publication Order Number

January, 2003 - Rev. 5

NCP1575/D

12 3 4 5 6 7...16

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