© Semiconductor Components Industries, LLC, 2004

October, 2004 − Rev. 7

1

Publication Order Number:

NCP1442/D

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−frequency 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.

Part Number

Frequency

Feedback Voltage Polarity

NCP1442

280 kHz

Positive

NCP1443

280 kHz

Negative

NCP1444

560 kHz

Positive

NCP1445

560 kHz

Negative

Features

Overcurrent Condition

Applications

*For additional information on our Pb−Free strategy and soldering details, please

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 18 of this data sheet.

PowerFLEX

]

7−PIN

F SUFFIX

CASE 936J

1

7

NCP1442/4

2. FB

3. TEST

4. GND

6. SS

NCP1443/5

2. TEST

3. NFB

4. GND

6. SS

PIN CONNECTIONS AND

MARKING DIAGRAMS

x

= Device Number 2, 3, 4, or 5

A

= Assembly Location

WL = Wafer Lot

Y

= Year

WW = Work Week

NC

P144xF

AWLYWW

NC

P144xT

AWLYWW

1

7

17

17

7 LEAD, TO−220

T SUFFIX

CASE 821P

PowerFLEX

7−PIN

7 LEAD, TO−220

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