uba20261 NXP Semiconductors, uba20261 Datasheet - Page 24

• Manufacturer Part Number: uba20261
• Description: 600 V And 350 V Power Ic For Step Dimmable Cfls
• Manufacturer: NXP Semiconductors

NXP Semiconductors
UBA20261_UBA20262
Preliminary data sheet
11.1.3 C
11.1.4 R
11.1.5 R
11.1.6 R
Where C
I
I
V
V
ph M
ph RMS
•
•
•
•
•
MDL
(CF)
SLS
MDL
LSAT
th sat
 

f
bridge max
f

Maximum bridge frequency
Minimum bridge frequency with disabled boost
f
Minimum bridge frequency with enabled boost
MDL threshold voltage
Saturation threshold voltage
bridge bst
bridge min
related preheat current
related frequency equations
related minimum dimming level
=
=
SLS
related saturation and overcurrent threshold level


par

R
V
------------------- -


------------------------ -
R
MDL
ph SLS
R
V
=
SLS
= 4.7 pF and t
SLS
ph SLS


min

V
=



=
th ocp
All information provided in this document is subject to legal disclaimers.

I
--------------------------------------------------------------------------- -
C
---------------------------

=
source MDL
--------------------------------------------------------------------------- -
C
---------------------------
I

CF
3
o CF
I
CF
o CF

--------------------------------------------------------------------------- -
C
---------------------------

SLS
I
+
CF
Rev. 1 — 9 September 2011
o bst
+
max


C
min
C
+
par
=
par
dch
CF
C

R
par


= 0.4 s.
LSAT
0.5
V
0.5
V

th CF
th CF
0.5
V



th CF
600 V and 350 V power IC for step dimmable CFLs
I

max
source LSAT
max
max
+
+

t
dch
t
+
dch
t
dch

UBA20261/2
© NXP B.V. 2011. All rights reserved.
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