NCP1288_11 datasheet(1/39 Pages) ONSEMI

Part #	NCP1288

Description	Fixed Frequency Current Mode Controller for Flyback Converters

Download	39 Pages

Scroll/Zoom	100%

Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

Logo

1 / 39 page

July, 2011 − Rev. 3

1

Publication Order Number:

NCP1288/D

NCP1288

Fixed Frequency Current

Mode Controller for Flyback

Converters

The NCP1288 is a new generation of the NCP12xx fixed−frequency

current−mode controllers featuring a high−voltage startup current,

pin−to−pincompatible with the previous generation.

Due to its proprietary Soft−Skip

™ mode combined with frequency

foldback, the controller exhibits excellent efficiency in light load

condition while still achieving very low standby power consumption.

This Soft−Skip feature also dramatically reduces the risk of acoustic

noise, which enables the use of inexpensive transformers and

capacitors in the clamping network.

Internal frequency jittering, ramp compensation, and a versatile

latch input make this controller an excellent candidate for converters

where ruggedness and components cost are the key constraints.

In addition, the controller includes a new high voltage circuitry that

combines a startup current source and a brown−out / line OVP detector

able to sense the input voltage either from the rectified ac line or the dc

filtered bulk voltage.

Finally, due to a careful design, the precision of critical parameters

is well controlled over the entire temperature range (−40

°C to

+125

°C), enabling easier design and increased safety (e.g. $5% for

the peak current limit,

$7% for the oscillator).

Features

• Timer−Based Overload Protections with Auto−

Recovery (Option B) or Latched (Option A) Operation

• High−Voltage Current Source with Built−in Brown−out

and Line Overvoltage Protections

• Fixed−Frequency Current−Mode Operation with

Built−in Ramp Compensation

• Frequency Jittering for a Reduced EMI Signature

• Adjustable Overpower Compensation

• Latch−off Input for Severe Fault Conditions, with

Direct Connection of an NTC for Overtemperature

Protection (OTP)

• Protection Against Winding Short−Circuit

• Frequency Foldback transitioning into Soft−Skip for

Improved Performance in Standby

• 65 kHz Oscillator (100 kHz and 133 kHz Versions

Available Upon Request)

• VCC Operation up to 28 V

• Increased Precision on Critical Parameters

• ±1.0 A Peak Drive Capability

• 4.0 ms Soft−Start

• Internal Thermal Shutdown with Hysteresis

• These Devices are Pb−Free, Halogen Free/BFR Free

and are RoHS Compliant*

Typical Applications

• ac−dc Adapters for Notebooks, LCD, and Printers

• Offline Battery Chargers

• Consumer Electronic Power Supplies

• Auxiliary/Housekeeping Power Supplies

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

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

SOIC−7

CASE 751U

MARKING

DIAGRAM

http://onsemi.com

88Xff

ALYWX

G

1

8

88Xff = Specific Device Code

X = A or B

ff = 65, 00, or 33

A

= Assembly Location

L

= Wafer Lot

Y

= Year

W

= Work Week

G

= Pb−Free Package

See detailed ordering and shipping information in the package

dimensions section on page 38 of this data sheet.

ORDERING INFORMATION

Similar Part No. - NCP1288_11

Manufacturer	Part #	Datasheet	Description
ON Semiconductor	NCP1288BD65R2G	274Kb / 32P	Fixed Frequency Current Mode Controller for Flyback Converters February, 2010 ??Rev. 1

More results

Similar Description - NCP1288_11

Manufacturer	Part #	Datasheet	Description
ON Semiconductor	NCP1246	1Mb / 38P	Fixed Frequency Current Mode Controller for Flyback Converters April, 2012 Rev. P0
	NCP1234	284Kb / 33P	Fixed Frequency Current Mode Controller for Flyback Converters October, 2011 ??Rev. 1
	NCP1246-D	1Mb / 39P	Fixed Frequency Current Mode Controller for Flyback Converters October, 2012 ??Rev. 1
	NCP12400	4Mb / 46P	Fixed Frequency Current Mode Controller for Flyback Converters October, 2019 ??Rev. 5
	NCP1236AD65R2G	302Kb / 34P	Fixed Frequency Current Mode Controller for Flyback Converters April, 2013 ??Rev. 3
	NCP1288	274Kb / 32P	Fixed Frequency Current Mode Controller for Flyback Converters February, 2010 ??Rev. 1
	NCP1236	295Kb / 34P	Fixed Frequency Current Mode Controller for Flyback Converters January, 2012 ??Rev. 2
	NCP1246	1Mb / 41P	Fixed Frequency Current Mode Controller for Flyback Converters March, 2017 - Rev. 7
	NCP12401	4Mb / 44P	Fixed Frequency Current Mode Controller for Flyback Converters July, 2020 ??Rev. 1
	NCP12400	4Mb / 47P	Fixed Frequency Current Mode Controller for Flyback Converters February, 2022 - Rev. 8
	NCP1246	1Mb / 39P	Fixed Frequency Current Mode Controller for Flyback Converters October, 2012 ??Rev. 1

More results

NCP1288 Datasheet(PDF) 1 Page - ON Semiconductor

NCP1288 Datasheet(HTML) 1 Page - ON Semiconductor

Similar Part No. - NCP1288_11

Similar Description - NCP1288_11

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

Datasheet Download

Link URL