Datasheet

UBA2071_A_1 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 01 — 23 June 2008 23 of 35
NXP Semiconductors
UBA2071; UBA2071A
Half bridge control IC for CCFL backlighting
The signal from the IC is a voltage signal and the signal to the IC is a current signal. In this
way a driving conflict is prevented. Also, it leaves the possibility for the outside world to
see the signal from the IC even while a fault condition is being signalled to the IC in the
meantime, as illustrated in Figure 18.
8.14.10 Fault input via the COMM pin
If a fault is signalled to the IC via the COMM pin this fault is treated identical to hard
switching detected, see Section 8.14.3.
9. Limiting values
Fig 18. Splitting the NONFAULT pin signals to and from the IC
UBA2071
to IC
from IC
NONFAULT
014aaa114
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). All voltages are measured with respect to signal
ground (SGND pin 10).
Symbol Parameter Conditions Min Max Unit
General
R
ref(IREF)
reference resistance on pin
IREF
30 36 kΩ
SR slew rate on pins FS, GH, and SH −4 +4 V/ns
T
amb
ambient temperature −25 +100 °C
T
j
junction temperature −25 +125 °C
T
stg
storage temperature −55 +150 °C
Voltages
V
SH
voltage on pin SH - 550 V
V
VDD
voltage on pin VDD - 14 V
V
FS
voltage on pin FS continuous 0 +570 V
t < 0.5 s 0 +630 V
with respect to V
SH
−0.3 +14 V
V
GL
voltage on pin GL −0.3 +14 V
V
GH
voltage on pin GH with respect to V
SH
−0.3 +14 V
V
PGND
voltage on pin PGND 0.0 0.0 V
V
VDD
voltage on pin VDD −0.3 +14 V
V
COMM
voltage on pin COMM −0.3 +14 V
V
EN
voltage on pin EN −0.3 +14 V
V
PWMA
voltage on pin PWMA −0.1 +5 V
V
PWMD
voltage on pin PWMD −0.1 +5 V