Datasheet
UBA20260 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 2 — 10 October 2011 20 of 30
NXP Semiconductors
UBA20260
600 V driver IC for step dimmable CFLs
I
det(dis)bst
boost disable detection current V
CB
=0V 30 25 20 A
t
t(bst-burn)
transition time from boost to burn C
CP
= 470 nF; T
j
<80C-3.6-s
Pin CSI
N
LCBR
lamp current boost ratio V
i(CSI)
in boost state versus V
i(CSI)
in
burn state; default start-up state
(no dimming)
1.4 1.5 1.6 V
Coil saturation protection and overcurrent detection
Input: pin SLS
V
th(sat)SLS
saturation threshold voltage on
pin SLS
ignition state 2.3 2.5 2.7 V
V
th(ocp)SLS
overcurrent protection threshold
voltage on pin SLS
boost state and burn state 2.3 2.5 2.7 V
t
leb
leading edge blanking time detection disabled for first part of
GLS time
- 800 - ns
Output pin CI
I
o(sink)CI
sink output current on pin CI V
CI
= 2 V; V
i(SLS)
> V
th(sat)SLS
; cycle
clocked
26 29 32 A
Output pin CF
I
o(sat)CF
saturation output current difference
on pin CF
V
CF
= 1.5 V; ignition state;
LS switch = on
-160-A
Ignition current detection
Input pin CSI
V
th(det)ign(CSI)
ignition detection threshold voltage
on pin CSI
0.55 0.6 0.65 V
t
w(det)ign(min)
minimum ignition detection pulse
width
V
th(det)ign(CSI)
= 0.75 V square pulse 685 885 1085 ns
Capacitive mode detection
Input pin SLS
V
th(capm)SLS
capacitive mode threshold voltage
on pin SLS
[4]
15 50 mV
Output pin CI
I
o(sink)CI
sink output current on pin CI V
i(SLS)
> V
th(capm)SLS
; V
CI
= 2 V;
ignition state or boost and burn
state
26 29 32 A
Lamp current sensor and dimming control
Input pin CSI
R
i(CSI)
input resistance on pin CSI V
i(CSI)
= 1 V 1 - - M
V
i(CSI)
= 1 V 40 50 60 k
V
i(CSI)
input voltage on pin CSI rectification linear for operation 2.5 - +2.5 V
minimum dim level;
R
ext(RREF)
=33k; R
MDL
=2k
44 50 56 mV
V
clamp(CSI)
clamping voltage on pin CSI RMS voltage; clamp active; default
start-up burn state; 100 % on
-1-V
Table 5. Characteristics …continued
V
DD
=13 V; V
FS
V
HBO
=13 V; T
amb
=25
C; settings according to default setting see Table 6 on page 25, all voltages
referenced to PGND and SGND, positive currents flow into the UBA20260, unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit