Datasheet

UBA2071_A_1 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 01 — 23 June 2008 24 of 35
NXP Semiconductors
UBA2071; UBA2071A
Half bridge control IC for CCFL backlighting
10. Thermal characteristics
11. Characteristics
V
NONFAULT
voltage on pin NONFAULT −0.1 +5 V
V
VFB
voltage on pin VFB continuous −0.1 +5 V
t < 1 ms −0.1 +9 V
V
IFB
voltage on pin IFB continuous −5+5V
t < 1 ms −9+9V
ESD
V
ESD
electrostatic discharge voltage human body model:
pins IFB, CIFB, VFB, CVFB,
CSWP, IREF, CT, CF, CPWM,
NONFAULT, COMM, PWMA,
PWMD, EN, VDD, and GL
−2+2kV
pins GH, FS, and SH −1+1kV
machine model:
all pins −250 +250 V
Table 4. Limiting values
…continued
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
Table 5. Thermal characteristics
Symbol Parameter Conditions Typ Unit
R
th(j-a)
thermal resistance from
junction to ambient
in free air; SO24 package 80 K/W
in free air; SSOP24 package 111 K/W
Table 6. Characteristics
T
amb
=25 ° C; V
VDD
=12V; R
IREF
= 33 k Ω ; V
EN
= V
VDD
and CPWM connected to a capacitor, unless otherwise specified. All
voltages are measured with respect to signal ground (SGND, pin 10). SGND and PGND connected together. GL, GH,
COMM, NONFAULT and PWMD pins left open (unless otherwise specified). Currents are positive when flowing into the IC.
Parameters valid for all types (unless otherwise specified).
Symbol Parameter Conditions Min Typ Max Unit
High voltage
I
leak
leakage current V
FS
, V
GH
, and V
SH
= 630 V;
V
VDD
=0V
--2µA
Start-up
V
startup(VDD)
VDD start-up voltage UBA2071T and UBA2071TS 11.7 12.1 12.5 V
UBA2071AT and UBA2071ATS 10.5 10.9 11.3 V
V
stop(VDD)
stop voltage on pin VDD 9.8 10.1 10.4 V
V
hys(VDD)
hysteresis voltage on pin VDD UBA2071T and UBA2071TS 1.8 2 2.2 V
UBA2071AT and UBA2071ATS 0.6 0.8 1.0 V
I
startup(VDD)
start-up current on pin VDD V
VDD
= 11 V; EN pin grounded 0.13 0.16 0.19 mA