UBA20271 datasheet(19/33 Pages) PHILIPS

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UBA20271_UBA20272

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Product data sheet

Rev. 2.1 — 12 October 2011

19 of 33

NXP Semiconductors

UBA20271/2

350 V and 600 V Power ICs for dimmable compact fluorescent lamps

High-voltage supply (DHS, HBO and FS)

Ileak

leakage current

UBA20271; 300 V on

high-voltage pins

A

UBA20272; 500 V on

high-voltage pins

A

Voltage controlled oscillator

Output pin IC

VCI(max)

maximum voltage on

pin CI

2.7

3.0

3.3

Vhr(CI)

headroom voltage on

pin CI

Vclamp(CI) = Vhr(CI)) + VCI(max);

burn and boost state

Voltage controlled oscillator

Output pin CF

fbridge(max)

maximum bridge

frequency

CCF = 100 pF; VCI = 0 V

[2] 88

100

112

kHz

fbridge(bst)min

minimum boost bridge

frequency

CCF = 100 pF;

VCI = Vclamp(CI)

[2] 21

kHz

fbridge(min)

minimum bridge

frequency

CCF = 100 pF;

VCI = Vclamp(CI) ; VCB = 0 V

[2] 38

kHz

tno

non-overlap time

VHBO rising edge

1.3

1.5

1.7

s

VHBO falling edge

1.3

1.5

1.7

s

Vth(CF)max

maximum threshold

voltage on pin CF

CCF = 100 pF;

VCI = Vclamp(CI) ; VCB = 0 V

2.40

2.50

2.60

Io(bst)CF

boost output current

on pin CF

VCF = 1.5 V; VCI = Vclamp(CI)

12.3

11.8

11.3

A

Io(CF)min

minimum output

current on pin CF

VCF = 1.5 V; VCB = 0 V;

VCI = Vclamp(CI)

-22.8

-21.8

-20.8

A

Io(CF)max

maximum output

current on pin CF

VCF = 1.5 V; VCB = 0 V

-67.0

-60.0

-53.0

A

Power transistors

Ron

on-state resistance

UBA20272:



high-side IDHS = 1.1 A;

Tj = 25 C

3.0

3.6



on-state resistance

UBA20271:



high-side IDHS = 1.1 A;

Tj = 25 C

1.0

1.3



Ron

on-state resistance

UBA20272:



low-side IHBO = 1.1 A;

Tj = 25 C

3.0

3.6



on-state resistance

UBA20271:



low-side IHBO = 1.1 A;

Tj = 25 C

1.0

1.3

Table 5.

Characteristics …continued

VDD = 13 V; VFS - VHBO = 13 V; Tamb = 25 C; settings according to default setting in Table 6, all voltages referenced to GND,

positive currents flow into the IC, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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