UBA2014P datasheet(13/19 Pages) NXP

13 / 19 page

UBA2014_4

Product data sheet

Rev. 04 — 16 October 2008

13 of 19

NXP Semiconductors

UBA2014

600 V driver IV for HF ﬂuorescent lamps

[1]

The maximum non-overlap time is determined by the level of the CF signal. If this signal exceeds a level of 1.25 V, the non-overlap will

end, resulting in a maximum non-overlap time of 7.5

µs at a bridge frequency of 40 kHz.

Lamp voltage sensor

Input: pin LVS

input current

VLVS = 0.81 V

µA

Vlamp(fail)

lamp fail voltage

0.77

0.81

0.85

Vlamp(fail)(hys) lamp fail hysteresis voltage

119

144

169

Vlamp(max)

maximum lamp voltage

1.44

1.49

1.54

Output: pin CT

Io(sink)

output sink current

VCSW = 2.0 V

273033

µA

Io(source)

ignition output source current

VCSW = 2.0 V

9.0

µA

Average current sensor

Input: pins CSP and CSN

input current

VCS = 0 V

--1

µA

Voffset

offset voltage

VCSP =VCSN = 0 V to 2.5 V

−2

transconductance

f = 1 kHz

1900

3800

5700

µA/mV

Output: pin CSW

output current

source and sink; VCSW = 2 V

8595105

µA

Preheat timer; pin CT

tph

preheat time

CCT = 330 nF;

RIREF =33kΩ

1.6

1.8

2.0

tign

ignition time

CCT = 330 nF;

RIREF =33kΩ

0.32

output current

VCT = 2.5 V

5.5

5.9

6.3

µA

VOL

LOW-level output voltage

1.4

VOH

HIGH-level output voltage

3.6

Vhys

hysteresis voltage

2.05

2.20

2.35

Table 6.

Characteristics …continued

VDD =13V; VFVDD − VSH = 13 V; Tamb =25 °C; all voltages referenced to GND; see test circuit of Figure 8; unless otherwise

speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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