A Product Line of
Diodes Incorporated
ZXLD1350
30V 350mA LED DRIVER with AEC-Q100
Electrical Characteristics
(Test conditions: V IN = 12V, T amb = 25°C, unless otherwise specified.) (Note 3)
Symbol
V SU
I INQoff
I INQon
V SENSE
Parameter
Internal regulator start-up threshold
Quiescent supply current with output off
Quiescent supply current with output switching
Mean current sense threshold voltage
(Defines LED current setting accuracy)
Condition
V IN rising
ADJ pin grounded
ADJ pin floating
f = 250kHz
Measured on I SENSE pin
with respect to V IN
V ADJ = 1.25V
Min.
95
Typ.
4.8
15
250
100
Max.
20
500
105
Unit
V
μA
μA
mV
V SENSEHYS
Sense threshold hysteresis
±15
%
I SENSE
I SENSE pin input current
V SENSE = V IN -0.1
1.25
10
μA
V REF
Internal reference voltage
Measured on ADJ pin with
pin floating
1.21
1.25
1.29
V
DV REF /DT
Temperature coefficient of V REF
50
ppm/°
C
V ADJ
External control voltage range on ADJ pin for
DC brightness control (Note 4)
0.3
2.5
V
V ADJoff
V ADJon
R ADJ
DC voltage on ADJ pin to switch device from
active (on) state to quiescent (off) state
DC voltage on ADJ pin to switch device from
quiescent (off) state to active (on) state
Resistance between ADJ pin and V REF
V ADJ falling
V ADJ rising
0.15
0.2
135
0.2
0.25
0.25
0.3
250
V
V
k ?
I LXmean
Continuous LX switch current
0.37
A
R LX
I LX(leak)
D PWM(LF)
D PWM(HF)
LX switch ‘On’ resistance
LX switch leakage current
Duty cycle range of PWM signal applied to ADJ PWM frequency <500Hz
pin during low frequency PWM dimming mode PWM amplitude = V REF
Brightness control range
Measured on ADJ pin
Duty cycle range of PWM signal applied to ADJ PWM frequency <10kHz
pin during high frequency PWM dimming mode PWM amplitude = V REF
Brightness control range
Measured on ADJ pin
0.01
0.16
1.5
100:1
5:1
2
1
1
1
?
μA
ADJ pin floating
f LX
Operating frequency
(See graphs for more details)
L = 100H (0.82V)
I OUT = 350ma @ V LED = 3.4V
250
kHz
Driving 1 LED
Time taken for output
t SS
Start up time
(See graphs for more details)
current to reach 90% of final
value after voltage on ADJ
500
μs
pin has risen above 0.3V.
Notes:
3. Production testing of the device is performed at 25°C. Functional operation of the device and parameters specified over a -40°C to +105°C
temperature range, are guaranteed by design, characterization and process control.
4. 100% brightness corresponds to V ADJ = V ADJ(nom) = V REF . Driving the ADJ pin above V REF will increase the V SENSE threshold and output current
proportionally.
ZXLD1350
Document number: DS33468 Rev. 8 - 2
4 of 22
www.diodes.com
March 2011
? Diodes Incorporated
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