zxld1352 Zetex Semiconductors plc., zxld1352 Datasheet - Page 2

• Manufacturer Part Number: zxld1352
• Description: 350ma Led Driver With Internal Switch And Enhanced Pwm Dimming Range
• Manufacturer: Zetex Semiconductors plc.

Absolute maximum ratings (voltages to GND unless otherwise stated)
Electrical characteristics
Issue 1 - August 2008
© Diodes Incorporated 2008
Input voltage (V
I
LX output voltage (V
Adjust pin input voltage (V
Switch output current (I
Power dissipation (P
(Refer to package thermal de-rating curve on page 18)
Operating temperature (T
Storage temperature (T
Junction temperature (T
These are stress ratings only. Operation above the absolute maximum rating may cause device failure. Operation at
the absolute maximum ratings, for extended periods, may reduce device reliability.
Thermal resistance
Junction to ambient (R
V
V
I
I
V
V
I
V
V
V
V
R
I
R
I
SENSE
INQoff
INQon
SENSE
LXmean
LX(leak)
Symbol
ADJ
ADJoff
ADJon
IN
SU
SENSE
SENSEHYS
REF
V
ADJ
LX
REF
/ T
voltage (V
Input voltage
Internal regulator start-up threshold V
Quiescent supply current
with output off
Quiescent supply current
with output switching
Mean current sense threshold
voltage
(defines LED current setting
accuracy)
Sense threshold hysteresis
I
Internal reference voltage
Temperature coefficient of V
External control voltage range on
ADJ pin for dc brightness control
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
Continuous LX switch current
LX Switch ‘On’ resistance
LX switch leakage current
SENSE
Parameter
REF
pin input current
IN
SENSE
)
tot
LX
)
)
)
ST
LX
j MAX
JA
OP
)
)
)
ADJ
)
(test conditions: V
)
)
REF
(†)
ADJ pin grounded
ADJ pin floating
f=250kHz
Measured on I
respect to V
V
V
Measured on ADJ pin with
pin floating
V
V
Conditions
ADJ
ADJ
ADJ
IN
SENSE
IN
rising
=1.25V
falling
rising
=12V, T
-0.3V to +30V (40V for 0.5 sec)
+0.3V to -5V (measured with respect to V
-0.3V to +30V (40V for 0.5 sec)
-0.3V to +6V
500mA
450mW
-40 to 105°C
-55 to 150°C
150°C
200°C/W
=V
2
IN
IN
-0.1
amb
SENSE
=25°C unless otherwise stated) (*)
pin with
Min.
1.21
0.15
0.3
0.2
95
35
7
Typ.
1.25
1.25
0.25
250
100
±15
4.8
0.2
1.5
20
50
ZXLD1352
www.diodes.com
www.zetex.com
Max.
1.29
0.25
0.37
500
105
2.5
0.3
30
30
10
65
2
1
IN
)
V
V
µA
µA
mV
%
µA
V
ppm/°C
V
V
V
k
A
µA
Unit