Datasheet

NXP Semiconductors
TEA1721FT
HV start-up flyback controller with integrated MOSFET for 5 W
© NXP B.V. 2012. All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [e-mail]
Date of release: 7 June 2012
Document identifier: TEA1721FT
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
13. Contents
1 Product profile . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.1 General description . . . . . . . . . . . . . . . . . . . . . .1
1.2 Features and benefits. . . . . . . . . . . . . . . . . . . . .1
1.3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.4 Quick reference data . . . . . . . . . . . . . . . . . . . . .2
2 Ordering information. . . . . . . . . . . . . . . . . . . . . .3
3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3.1 Block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . .3
4 Pinning information. . . . . . . . . . . . . . . . . . . . . . .4
4.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . .4
5 Functional description . . . . . . . . . . . . . . . . . . . .4
5.1 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
5.2 Primary sensing . . . . . . . . . . . . . . . . . . . . . . . . .4
5.3 Operating modes . . . . . . . . . . . . . . . . . . . . . . . .5
5.4 Jitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5.3.1 Constant Voltage with Burst mode (CVB). . . . . .5
5.3.2 Constant Voltage mode (CV) . . . . . . . . . . . . . . .5
5.3.3 Constant Current mode (CC) . . . . . . . . . . . . . . .6
6 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . .7
7 Thermal characteristics . . . . . . . . . . . . . . . . . . .7
8 Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . .8
9 Package outline . . . . . . . . . . . . . . . . . . . . . . . . .10
10 Revision history. . . . . . . . . . . . . . . . . . . . . . . . .11
11 Legal information. . . . . . . . . . . . . . . . . . . . . . . .12
11.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . .12
11.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
11.3 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . .12
11.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . .13
12 Contact information. . . . . . . . . . . . . . . . . . . . . .13