UBA2017 datasheet(21/29 Pages) PHILIPS

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UBA2017

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Product data sheet

Rev. 2 — 15 May 2012

21 of 29

NXP Semiconductors

UBA2017/UBA2017A

600 V fluorescent lamp driver with linear dimming function

Dimming

Ibias(DIM)

bias current on pin DIM

VDIM =1V

−28

−26

−24

μA

Ri(DIM)

input resistance on pin DIM

VDIM =2.5 V

HB protection

Vth(sat)(SLHB)

saturation threshold voltage on pin

SLHB

2.35

2.5

2.65

td(det)sat

saturation detection delay time

Burn state

0.3

μs

tleb(SLHB)

leading edge blanking time on pin SLHB

260

340

420

Iadd(CF)

additional current on pin CF

VSLHB >Vth(sat)SLHB; VCF =2V

−107 −96

−85

μA

Ibias(SLHB)

bias current on pin SLHB

VSLHB =2.5 V

−10

−8.5

−7

μA

Vth(ocd)(IFB)

overcurrent detection threshold voltage

on pin IFB

2.8

3.0

3.2

Vth(osp)(VFB)

open/short protection threshold voltage

on pin VFB

120

Vth(ov)(VFB)

overvoltage threshold voltage on pin

VFB

2.4

2.5

2.6

tdet(fault)

fault detection time

125

μs

overvoltage extra or capacitive

mode during burn state

-50

μs

trel(fault)

fault release time

Vth(ovextra)(VFB)

overvoltage extra threshold voltage on

pin VFB

3.2

3.35

3.5

Ibias(VFB)

bias current on pin VFB

2.3

2.6

2.9

μA

Vth(low)EOL

low threshold voltage on pin EOL

1.1

1.2

Vth(high)EOL

high threshold voltage on pin EOL

2.25

2.5

Ibias(EOL)

bias current on pin EOL

VEOL = 1.65 V

15.4

16.2

μA

Vth(oveol)(VFB)

overvoltage end-of-life threshold voltage

on pin VFB

UBA2017 or UBA2017A pin

DIM open

0.8

0.88

0.96

UBA2017A

VDIM = 1.0 V

0.92

1.0

1.08

VDIM = 0.5 V

1.15

1.23

1.31

Ven(oveol)(DIM)

overvoltage end-of-life enable voltage

on pin DIM

UBA2017A

0.21

0.25

0.29

Vth(hswp)SHHB

hard switching protection threshold

voltage on pin SHHB

fsw = 50 kHz

-100

-V

Vth(cm)SHHB

capacitive mode detection threshold

voltage on pin SHHB

tno(LH)

-30

-V/

μs

Vth(scp)(CPT)

short-circuit protection threshold voltage

on pin CPT

120

160

Rpar(ext)(CPT)

external parallel resistance on pin CPT

700

Rs(ext)(CPT)

external series resistance on pin CPT

tto(fault)

fault time-out time

CCPT = 100 nF

0.16

0.19

0.22

Table 6.

Characteristics …continued

Tamb = 25 °C; settings according to default setting[1]; all voltages referenced to GND; current flow into the IC is positive;

unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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