TEA1738T

Low voltage start-up flyback controller suitable for fixed frequency/CCM


Quick ordering

DistributorIn Stock
OR:  

The TEA1738 family of IC´s are low cost Switched Mode Power Supply (SMPS) controller IC´s intended for flyback topologies. They operate in peak current and frequency control mode. To reduce Electro Magnetic Interference (EMI), frequency jitter has been implemented. Slope compensation is integrated for Continuous Conduction Mode (CCM) operation.

Features and benefits

  • SMPS controller IC enabling low-cost applications
  • Large input voltage range (12 V to 30 V)
  • Integrated Over Voltage Protection (OVP) on pin VCC
  • Very low supply current during start-up and restart (typically 10 μA)
  • Low supply current during normal operation (typically 0.55 mA without load)
  • Overpower or high/low line compensation
  • Adjustable overpower time-out
  • Adjustable overpower restart timer
  • Fixed switching frequency with frequency jitter to reduce EMI
  • Frequency reduction at medium power operation to maintain high efficiency
  • Frequency reduction with fixed minimum peak current
  • Frequency increase at peak power operation
  • Slope compensation for CCM operation
  • Low and adjustable OverCurrent Protection (OCP) trip level
  • Adjustable soft start operation
  • Two protection inputs (e.g. for input UVP and OTP)
  • IC overtemperature protection

Applications

  • All applications requiring efficient and cost-effective PSU solutions up to 75 W
All information on this product information page is subject to the subsequent disclaimers:
Go to the parametric search
Parametric search

Show functional diagram

Block Diagram: TEA1738LT
Block Diagram: TEA1738LT

Parametrics of this product

SymbolParameterConditionsMinTyp/NomMaxUnit
Vstartupstart-up voltage18.620.622.6V
foscoscillator frequencyhigh power63kHz
foscoscillator frequencymedium power26.5kHz
foscoscillator frequencypeak power78kHz
ICC(startup)start-up supply currentVCC < Vstartup51015µA
Tjjunction temperature-40150°C
VCCsupply voltagecontinuous-0.430V
VCCsupply voltaget < 100 ms35V
Vth(UVLO)undervoltage lockout threshold voltage11.212.213.2V

Package

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
TEA1738T/N1TEA1738T/N1,1189352 918 76118Volume productionSOT96-1
(SO8) 		Tape reel smdStandard Marking

Pinning information

PinSymbolDescriptionSimplified outlineGraphic symbol
1VCCsupply voltagePin configuration: TEA1738(L) (SOT96-1)SOT96-1
2GNDground
3DRIVERgate driver output
4ISENSEcurrent sense input
5VINSENSEinput voltage protection input
6PROTECTgeneral purpose protection input
7CTRLcontrol input
8OPTIMERoverpower and restart timer

Outline drawing

Package VersionPackage NamePackage DescriptionReference CodesIssue Date
SOT96-1SO8plastic small outline package; 8 leads; body width 3.9 mmMS-012 (JEDEC); 076E03 (IEC); 2003-02-18

Related documents

Leaflet

Other type

Reflow soldering

Selection guide

Wave soldering

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
TEA1738T/N1TEA1738T/N1,118TEA1738T/N1Always Pb-free11
Quality and reliability disclaimer

Quality and reliability disclaimer

Important Legal Notice on the product/generic quality information, No Warranty

NXP Semiconductors is providing this data for your convenience only. Please note however that NO WARRANTY, REPRESENTATION, GUARANTEE OR LEGALLY BINDING PRODUCT DESCRIPTION is provided by publishing this informational data, nor does NXP Semiconductors acknowledge or accept any liability related thereto. The documentation and data on NXP Semiconductors products can be found in the data sheets as officially published by NXP Semiconductors. For all purchase of products from NXP Semiconductors the NXP Semiconductors' General Terms and Conditions of Commercial Sale will apply.

NXP SEMICONDUCTORS PROVIDES THE DATA HEREUNDER “AS IS” WITHOUT WARRANTY WHATSOEVER. NXP SEMICONDUCTORS DOES NOT WARRANT OR REPRESENT THAT ANY DATA PROVIDED ON THIS WEBSITE IS CORRECT OR FIT FOR A PARTICULAR PURPOSE WHATSOEVER. IT IS PROVIDED WITHOUT ANY WARRANTY WHATSOEVER, WHETHER EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, COMPLETENESS NONINFRINGEMENT OF INTELLECTUAL PROPERTY OR OTHERWISE AND MAY BE CHANGED, MODIFIED OR DELETED BY NXP SEMICONDUCTORS AT ANY TIME.

Any use of the data provided hereunder is at your own risk.

IN NO EVENT SHALL NXP SEMICONDUCTORS, BE LIABLE FOR ANY DIRECT, SPECIAL, INDIRECT, CONSEQUENTIAL, PUNITIVE, OR INCIDENTAL DAMAGES (INCLUDING WITHOUT LIMITATION DAMAGES FOR LOSS OF BUSINESS, BUSINESS INTERRUPTION, LOSS OF USE, LOSS OF DATA OR INFORMATION, AND THE LIKE) ARISING OUT OF THE USE OF THE DATA, WHETHER OR NOT BASED ON TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY, BREACH OF CONTRACT, BREACH OF WARRANTY OR ANY OTHER THEORY, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. NOTWITHSTANDING ANY DAMAGES THAT YOU MIGHT INCUR FOR ANY REASON WHATSOEVER (INCLUDING, WITHOUT LIMITATION, ALL DAMAGES REFERENCED ABOVE AND ALL GENERAL DAMAGES), THE ENTIRE LIABILITY OF NXP SEMICONDUCTORS, AND YOUR EXCLUSIVE REMEDY FOR ALL OF THE FOREGOING SHALL BE LIMITED TO ACTUAL DAMAGES INCURRED BY YOU BASED ON REASONABLE RELIANCE UP TO ONE DOLLARS (US$1.00). THE FOREGOING LIMITATIONS, EXCLUSIONS AND DISCLAIMERS SHALL APPLY TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, EVEN IF ANY REMEDY FAILS OF ITS ESSENTIAL PURPOSE.

Your use of this data, and all consequences of such use, is solely your responsibility. You must perform sufficient engineering and additional qualification testing in order to properly evaluate your application and determine whether a candidate NXP Semiconductors device is suitable for use in that application.

NXP Semiconductors' products are specifically designed and manufactured to be used within the electrical, thermal, mechanical and other parameters set forth in NXP Semiconductors' data sheets. Quality and reliability data provided by NXP Semiconductors, such as MTBF, MSL and FIT, is intended to be a non-binding estimate of product performance based upon diffusion process, history only. It does not imply that any performance levels reflected in such data can be met if the product is operated outside the conditions expressly stated in the latest published data sheet for a device or in your application.

The RoHS data provided hereunder is preliminary and non binding for NXP Semiconductors. NXP Semiconductors does not accept any liability related to this data.

NXP Semiconductors products are not designed, authorized or warranted to be suitable for use in medical, military, aircraft, space or life support equipment, nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage nor for any other use that is not explicitly agreed between the parties. NXP Semiconductors accepts no liability for inclusion and/or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk.

Any use of NXP Semiconductors' products beyond the scope defined in the current NXP Semiconductors' data sheet voids all warranty responsibility of NXP Semiconductors with respect to such devices, and also voids all responsibility of NXP Semiconductors with respect to any applications assistance, product design, software performance or services of any kind that were or may have been performed in connection with the sale of any such devices.

Further, resale of NXP Semiconductors' products or services with statements different from or beyond the parameters stated by NXP Semiconductors for that product in official NXP Semiconductors data sheets, or without the warnings or instructions provided by NXP Semiconductors, voids all express and any implied warranties for the associated NXP Semiconductors product or service, and is an unfair and deceptive business practice.

Documentation for this product

File nameTitleTypeFormatDate
TEA1738T_TEA1738LTGreenChip SMPS control ICData sheetpdf2011-01-14
AN10981GreenChip TEA1738 series fixed frequency flyback controllerApplication notepdf2011-04-18
AN11012Reducing standby powerApplication notepdf2011-03-30
75017052NXP GreenChip flyback controllers TEA173xBrochurepdf2011-03-15
75017085Application guide: Flat-panel TV setsLine cardpdf2012-03-13
001aan129GreenChip logoLogogif2012-04-20
UM10437TEA1738; TEA1703 reference boardUser manualpdf2011-02-28

Ordering & availability

Type numberOrdering code (12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
TEA1738T/N19352 918 76118TEA1738T/N1,118ASIAWPI12,500250005/21/2013Buy online 
   EUFarnell Europe50105/21/2013Buy online 
   ASIAElement 1450121/05/2013Buy online 
   JAPANCHIP ONE STOP5005/21/2013Buy online 
   NANEWARK/ELEMENT14155/21/2013Buy online 

Sample

Sample orders normally take 2-4 days for delivery.
If you do not have a direct account with NXP our network of global and regional distributors is available and equipped to support you with NXP samples. As a NXP customer you also have the option to order samples via our sales organisation.

Technical support

Do you want to ask technical questions to an NXP expert?
Please select one of the following options:

How to search?

Restricted Document

You are accessing a password protected document.
Please choose an option below

Fill in your name, company and e-mail address and you will receive an e-mail with a username and password for this restricted document.

First name*

Last name*

Company*

E-mail*

Comments

* required.

Print password request form:

Before we can grant you access to our confidential documents you are required to fill in, print and sign the password request form by which you comply with the NXP Non-disclosure agreement (NDA). Please email or fax the signed form to the email-address or fax-number specified on the form. After approval you will receive username and password via email. In case you already signed an NDA with NXP and already have username and password, you can skip this step.

Open document:

If you have received the username and password, you can open the document by clicking on the "open document" link. You will be prompted for username and password. After you fill in the username and password the download will start.

Forgot your password:

In case you forgot your password you can click on the "forgot your password" link to retrieve your password. Please complete the small form with your personal details and your request will be sent to NXP. You will receive an answer with your password shortly.

Request secure documentation

Fill in your name, company and e-mail address and you will receive an e-mail with a username and password for this secure document.

First name*

Last name*

Company*

E-mail*

Comments

* required.

Datasheet confidential

Fill in your details and you will be contacted

First name*

Last name*

Company*

Country*

Telephone number*

E-mail*

* required.

Your e-mail address will only be used to send the datasheet and will not be used for any other purposes.

No full datasheet available

Fill in your details to receive notification when the datasheet becomes available

First name*

Last name*

Company*

E-mail*

* required.

Your email address will only be used to send the datasheet and will not be used for any other purposes.