1.

General description

The UBA2021 is a high voltage IC intended to drive and control Compact Fluorescent

Lamps (CFL) or fluorescent TL lamps. It contains a driver circuit for an external

half-bridge, an oscillator and a control circuit for starting up, preheating, ignition, lamp

burning and protection.

2.

Features

3.

Quick reference data

UBA2021

630 V driver IC for CFL and TL lamps

Rev. 04 — 25 July 2008

Product data sheet

Table 1.

Quick reference data

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

High voltage supply

high side supply voltage

-

-

630

V

Start-up state

oscillator start voltage

-

11.95

-

V

oscillator stop voltage

-

10.15

-

V

standby current

-

200

-

µA

Preheat mode

start frequency

-

108

-

kHz

preheat time

-

666

-

ms

control voltage at pin RS

-

−600

-

mV

Frequency sweep to ignition

bottom frequency

-

42.9

-

kHz

ignition time

-

625

-

ms

Normal operation

bottom frequency

-

42.9

-

kHz

non-overlap time

-

1.4

-

µs