NXP Semiconductors
UBA2021
630 V driver IC for CFL and TL lamps
© NXP B.V. 2008. All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
Date of release: 25 July 2008
Document identifier: UBA2021_4
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
17. Contents
1 General description. . . . . . . . . . . . . . . . . . . . . . 1
2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Quick reference data . . . . . . . . . . . . . . . . . . . . . 1
4 Ordering information. . . . . . . . . . . . . . . . . . . . . 2
5 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2
6 Pinning information. . . . . . . . . . . . . . . . . . . . . . 3
6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3
7 Functional description . . . . . . . . . . . . . . . . . . . 3
7.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
7.2 Initial start-up . . . . . . . . . . . . . . . . . . . . . . . . . . 4
7.3 Oscillation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
7.4 Operation in the preheat mode. . . . . . . . . . . . . 4
7.5 Ignition state . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.6 Failure to ignite . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.7 Transition to the burn state . . . . . . . . . . . . . . . . 5
7.8 Feed-forward frequency . . . . . . . . . . . . . . . . . . 5
7.9 Capacitive mode protection . . . . . . . . . . . . . . . 6
7.10 IC supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
7.11 Minimum gate-source voltage of T1 and T2 . . . 6
7.12 Frequency and change in frequency. . . . . . . . . 7
7.13 Ground pins . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7.14 Charge coupling . . . . . . . . . . . . . . . . . . . . . . . . 7
8 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 7
9 Thermal characteristics. . . . . . . . . . . . . . . . . . . 8
10 Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 8
11 Design information . . . . . . . . . . . . . . . . . . . . . 10
11.1 Design equations . . . . . . . . . . . . . . . . . . . . . . 10
12 Application information. . . . . . . . . . . . . . . . . . 11
13 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 12
14 Revision history. . . . . . . . . . . . . . . . . . . . . . . . 14
15 Legal information. . . . . . . . . . . . . . . . . . . . . . . 15
15.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 15
15.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
15.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
15.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
16 Contact information. . . . . . . . . . . . . . . . . . . . . 15
17 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

UBA2021T/N2,518

Mfr. #:
Manufacturer:
NXP Semiconductors
Description:
Display Drivers & Controllers LIGHTING CFL-2 IC
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union