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NCP1442, NCP1443,

NCP1444, NCP1445

4.0 A 280 kHz/560 kHz

Boost Regulators

The NCP1442/3/4/5 products are 280 kHz/560 kHz switching

regulators with a high efficiency, 4.0 A integrated switch. These parts

operate over a wide input voltage range, from 2.7 V to 30 V. The

flexibility of the design allows the chips to operate in most power

supply configurations, including boost, flyback, forward, inverting,

and SEPIC. The ICs utilize current mode architecture, which allows

excellent load and line regulation, as well as a practical means for

limiting current. Combining high鈭抐requency operation with a highly

integrated regulator circuit results in an extremely compact power

supply solution. The circuit design includes provisions for features

such as frequency synchronization, shutdown, and feedback controls

for either positive or negative voltage regulation.

1

Part Number

NCP1442

NCP1443

NCP1444

NCP1445

Frequency

280 kHz

560 kHz

Feedback Voltage Polarity

Positive

Negative

Positive

Negative

NC

P144xF

AWLYWW

NC

P144xT

AWLYWW

7

http://onsemi.com

1

7

PowerFLEX]

7鈭扨IN

F SUFFIX

CASE 936J

7 LEAD, TO鈭?20

T SUFFIX

CASE 821P

PIN CONNECTIONS AND

MARKING DIAGRAMS

Features

鈥?/div>

Pb鈭扚ree Packages are Available*

Integrated Power Switch: 4.0 A Guaranteed

Wide Input Range: 2.7 V to 30 V

High Frequency Allows for Small Components

Minimum External Components

Easy External Synchronization

Built鈭抜n Overcurrent Protection

Frequency Foldback Reduces Component Stress During an

Overcurrent Condition

鈥?/div>

Thermal Shutdown with Hysteresis

鈥?/div>

Regulates Either Positive or Negative Output Voltages

鈥?/div>

Shut Down Current: 50

mA

Maximum

Applications

1

7

PowerFLEX

7鈭扨IN

1

7

7 LEAD, TO鈭?20

NCP1442/4

Pin 1. V

C

2. FB

3. TEST

4. GND

5. V

SW

6. SS

7. V

CC

x

A

WL

Y

WW

NCP1443/5

1. V

C

2. TEST

3. NFB

4. GND

5. V

SW

6. SS

7. V

CC

鈥?/div>

Boost Converter

Inverting Converter

Distributed Power

Portable Computers

Battery Powered Systems

= Device Number 2, 3, 4, or 5

= Assembly Location

= Wafer Lot

= Year

= Work Week

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 18 of this data sheet.

*For additional information on our Pb鈭扚ree strategy and soldering details, please

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

漏

Semiconductor Components Industries, LLC, 2004

1

October, 2004 鈭?Rev. 7

Publication Order Number:

NCP1442/D

標(biāo)準(zhǔn)包裝
2,000
類別
集成電路 (IC)
家庭
PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器
系列
-
類型
升壓（升壓），反相，回掃，正向轉(zhuǎn)換器，Sepic
輸出類型
可調(diào)式
輸出數(shù)
1
輸出電壓
可調(diào)
輸入電壓
2.7 V ~ 30 V
PWM 型
電流模式
頻率 - 開關(guān)
560kHz
電流 - 輸出
4A
同步整流器
無
工作溫度
0°C ~ 85°C
安裝類型
表面貼裝
封裝/外殼
Powerflex-7
包裝
帶卷 (TR)
供應(yīng)商設(shè)備封裝
7-Powerflex
其它名稱
NCP1445FR4OSTR

NCP1445FR4相關(guān)型號PDF文件下載

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NCP1445FR4 Datasheet

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