Diodes ZXLD1362 - Manual (Page 3)

ZXLD1362
ZXLD1362
Document number: DS33472 Rev. 5 - 2
3 of 24
www.diodes.com
May 2012
© Diodes Incorporated
A Product Line of
Diodes Incorporated
Absolute Maximum Ratings (Note 4)
Symbol Parameter Rating Unit
V
IN
Input Voltage -0.3 to +65 V
V
SENSE
I
SENSE
Voltage (Note 5) +0.3 to -5 V
V
LX
LX Output Voltage -0.3 to +65 V
V ADJ Adjust Pin Input Voltage -0.3 to +6 V
I
LX
Switch Output Current 1.25 A
P
TOT
Power Dissipation
(Refer to Package thermal de-rating curve on page 16)
1 W
T ST Storage Temperature -55 to +150 °C
T
J MAX Junction Temperature 150 °C
Note: 4 All voltages unless otherwise stated are measured with respect to GND.
5. V
SENSE
is measured with respect to V
IN
.
Caution: Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings
only; functional operation of the device at conditions between maximum recommended operating conditions and absolute maximum ratings is not
implied. Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time.
ESD Susceptibility
Rating Unit
Human Body Model 500 V
Machine Model 75 V
Caution: Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when
handling and transporting these devices.
The human body model is a 100pF capacitor discharge through a 1.5k Ω resistor pin. The machine model is a 200pF capacitor discharged directly
into each pin.
Thermal Resistance
Symbol Parameter Rating Unit
θ
JA Junction to Ambient 82 °C/W
Ψ
JB
Junction to Board 33 °C/W
Recommended Operating Conditions
Symbol Parameter Min Max Units
V
IN Input Voltage Range (Note 6) 6 60 V
I
LX
Maximum recommended continuous/RMS switch current 1 A
V
ADJ
External control voltage range on ADJ pin for DC brightness control (Note 7) 0.3 2.5 V
V
ADJoff
DC voltage on ADJ pin to ensure devices is off 0.25 V
t
ONMIN
Minimum switch on-time 800 ns
f
LXmax
Recommended maximum operating frequency (Note 8) 625 kHz
D
LX
Duty cycle range 0.01 0.99
T
A
Ambient operating temperature range -40 +125 °C
Notes: 6. V
IN
> 16V to fully enhance output transistor. Otherwise out current must be derated - see graphs. Operation at low supply may cause excessive
heating due to increased on-resistance. Tested at 7V guaranteed for 6V by design.
7. 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.
8. ZXLD1362 will operate at higher frequencies but accuracy will be affected due to propagation delays.