uba20270 NXP Semiconductors, uba20270 Datasheet - Page 25

• Manufacturer Part Number: uba20270
• Description: 600 V Driver Ic For Dimmable Compact Fluorescent Lamps
• Manufacturer: NXP Semiconductors

NXP Semiconductors
UBA20270
Product data sheet
Fig 11. Application diagram
R1
C1
L1
C17
11.1.4 R
11.1.5 R
C2
D1
D3
D5
Where: C
Detailed in
Table 6.
I
V
Reference
R1
R2, R3
R4
ph M
R4
•
•
D2
D4
MDL
SLS
MDL
f
f
bridge bst
 
bridge min
Minimum bridge frequency with enabled boost:
MDL threshold voltage:
D6
C3
R2
R3
related preheat current:
C11
related MDL:
=
=


R
V
------------------- -
par
MDL
ph SLS
Typical components for a 230 V mains application
R
min
Table 6
C4

SLS
= 4.7 [pF] and t

=

=
All information provided in this document is subject to legal disclaimers.
--------------------------------------------------------------------------- -
C
---------------------------

Component UBA20270
10
220 k
22 k
I
CFL
C5
I
source MDL
CF
o CF
--------------------------------------------------------------------------- -
C
---------------------------

is a list of typical application components. See
I
CF
o bst
+

Rev. 2 — 8 September 2011
min
R CSI
C
C8
+
I

ph RMS
par
CF
C
R7

par
L2


dch
600 V Driver IC for dimmable compact fluorescent lamps
0.5
V

C9
C10
R9

th CF
0.5
V
= 0.4 [s] (typical)

C14

th CF
------------------------ -
R
V
D9

SLS
D7
max
ph SLS
D8

max

+
R11

3
t
C13
+
R10
dch
R5
R6
t
dch
Q1
Q2
C12
C7
R SLS
Description
2 W fusible resistor
GHS
HBO
GLS
V
SLS
CSI
DCI
FS
DD
C6
16
14
15
4
2
1
9
10
UBA20270
3
PGND
Figure
UBA20270
13
© NXP B.V. 2011. All rights reserved.
SGND
12
11
8
7
5
6
11.
CB
CP
CI
MDL
RREF
CF
C15
R MDL
R REF
001aam672
C CB
C CP
C CF
25 of 32
C16
R8
(10)
(11)
(8)
(9)