UBA2021 datasheet(9/20 Pages) PHILIPS

9 / 20 page

2001 Jan 30

Philips Semiconductors

Product speciﬁcation

630 V driver IC for CFL and TL lamps

UBA2021

CHARACTERISTICS

VVS =11V; VFS − VS1 =11V; Tamb =25 °C; all voltages referenced to ground; see Fig.7; unless otherwise speciﬁed.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

High voltage supply

leakage current on high voltage pins

VFS,VG1 and VS1 = 630 V

−−

µA

Start-up state

VVS(reset)

reset voltage

T1 off; T2 on

4.0

5.5

6.5

VVS(start)

oscillator start voltage

11.35

11.95

12.55

VVS(stop)

oscillator stop voltage

9.55

10.15

10.75

VVS(hys)

supply voltage hysteresis

1.5

1.8

2.0

IVS(standby)

standby supply current at pin VS

VVS = 11 V; note 1

150

200

250

µA

∆V

(RHV

−VS)

voltage difference between pins RHV

and VS

IRHV = 1.0 mA

0.7

0.8

1.0

VVS(clamp-start)

clamp margin VVS(clamp) to VVS(start)

note 2

0.2

0.3

0.4

IVS(clamp)

clamp current

VVS <17V

−

Preheat mode

fstart

starting frequency

VCI = 0 V

108

118

kHz

conducting time T1 and T2

fstart = 108 kHz

−

3.2

−µs

ICI(charge)

charge current at pin CI

VCI = 1.5 V; VRS = −0.3 V

384450

µA

ICI(discharge)

discharge current at pin CI

VCI = 1.5 V; VRS = −0.9 V

107

µA

tph

preheat time

599

666

733

ICP(charge)

charge current at pin CP

VCP =1V

−

6.0

−µA

ICP(discharge)

discharge current at pin CP

VCP =1V

−

5.95

−µA

∆V

CP(pk)

peak voltage difference at pin CP

when timing

−

2.5

−

VRS(ctrl)

control voltage at pin RS

note 3

−636

−600

−564

Frequency sweep to ignition

ICI(charge)

charge current at pin CI

VCI = 1.5 V; f ≈ 85 kHz

0.8

1.0

1.2

µA

bottom frequency

VCI at clamp level

−

42.9

−

kHz

tign

ignition time

−

625

−

Normal operation

bottom frequency

42.21

42.90

44.59

kHz

conducting time T1 and T2

fB = 43 kHz

−

10.2

−µs

tno

non-overlap conductance time

1.05

1.4

1.75

µs

Itot

total supply current

fB = 43 kHz; note 4

0.85

1.0

1.1

VRS(cap)

capacitive mode control voltage

note 5

VRREF

reference voltage

note 6

2.425

2.5

2.575

VG1(on)

on voltage at pin G1

IG1 = 1 mA

10.5

−−

VG1(off)

off voltage at pin G1

IG1 = 1 mA

−−

0.3

VG2(on)

on voltage at pin G2

IG2 = 1 mA

10.5

−−

VG2(off)

off voltage at pin G2

IG2 = 1 mA

−−

0.3

RG1(on)

high side driver on resistance

V(G1 − S1) = 3 V; note 7

100

126

152

Ω

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