UBA3070T NXP [NXP Semiconductors], UBA3070T Datasheet - Page 8

• Manufacturer Part Number: UBA3070T
• Description: LED backlight driver IC
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
Table 5.
T
unless otherwise specified.
UBA3070_2
Product data sheet
Symbol
I
I
I
Masking management (pin MASK)
V
V
V
I
t
I
Oscillator
f
PWM duty cycle control (pin PWM)
V
V
I
Valley switch (pin DRAIN)
( V/ t)
t
Overcurrent protection (pin SENSE)
V
t
V
t
I
Driver (pin GATE)
I
I
V
CC(oper)
CC(startup)
CC(prot)
stop(pos)(MASK)
sup(xfmr_ring)
prot(MASK)
osc(high
prot(PWM)
d(vrec-swon)
PD
leb
startup(soft)
source
sink
amb
th(MASK)
clamp(neg)(MASK)
clamp(pos)(MASK)
IL(en)ILED(PWM)
IH(dis)ILED(PWM)
sense(max)
swp
o(max)
= 25 C; V
)
vrec
Characteristics
CC
Parameter
operating supply current
start-up supply current
protection supply current
threshold voltage on pin MASK
negative clamp voltage on pin
MASK
positive clamp voltage on pin
MASK
positive stop current on pin MASK
transformer ringing suppression
time
protection current on pin MASK
high oscillator frequency
LED current enable LOW-level
input voltage on pin PWM
LED current disable HIGH-level
input voltage on pin PWM
protection current on pin PWM
valley recognition voltage change
with time
valley recognition to switch-on
delay time
maximum sense voltage
propagation delay
short-winding protection voltage
leading edge blanking time
soft startup current
source current
sink current
maximum output voltage
= 15 V; all voltages are measured with respect to ground; currents are positive when flowing into the IC;
…continued
Rev. 02 — 2 December 2008
Conditions
no load on pin GATE
V
V
I
I
start secondary shock
V
V
V
R
V
V
V
V
V
V
V
MASK
MASK
V/ t = 0.1 V/ s
V/ t = 0.5 V/ s
CC
CC
MASK
PWM
PWM
CC
DRIVER
CC
DRIVER
CC
DRIVER
CC
sense
= 9.5 V;
< V
> V
= 9.5 V;
= 9.5 V;
> 12 V
= 150 A
= 250 A
is low
= 1.5 V
= 50 mV
CC(startup)
CC(UVLO)
= 2 V
= 2 V
= 9.5 V
0.5 V
[2]
[2]
Min
1.1
-
-
50
0.5
54
1.1
145
-
2.0
-
0.48
-
0.83
300
45
-
-
-
-
0.5
50
1.0
85
[1]
[1]
Typ
1.3
-
0.85
100
0.7
60
1.5
-
175
-
-
-
150
0.52
140
0.88
370
60
240
560
11.5
0.25
0.8
135
LED backlight driver IC
[1]
UBA3070
© NXP B.V. 2008. All rights reserved.
Max
1.5
600
-
150
0.9
66
1.9
205
0.5
-
+85
-
0.56
185
0.95
440
75
-
-
-
12
0.05
10
0.5
Unit
mA
mA
mV
V
V
nA
kHz
V
V
V/ s
ns
V
ns
V
ns
mA
mA
mA
V
A
A
s
A
A
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