LED DRIVER. ZXLD1366 Datasheet

ZXLD1366 DRIVER. Datasheet pdf. Equivalent

Part ZXLD1366
Description 60V LED DRIVER
Feature A Product Line of Diodes Incorporated ZXLD1366 HIGH ACCURACY 1A, 60V LED DRIVER WITH AEC-Q100 Descr.
Manufacture Diodes
Datasheet
Download ZXLD1366 Datasheet



ZXLD1366
ZXLD1366
HIGH ACCURACY 1A, 60V LED DRIVER WITH AEC-Q100
Description
The ZXLD1366 is a continuous mode inductive step-down
converter, designed for driving single or multiple series connected
LEDs efficiently from a voltage source higher than the LED voltage.
The device operates from an input supply between 6V and 60V and
provides an externally adjustable output current of up to 1A.
The ZXLD1366 is qualified to AEC-Q100 Grade 1, enabling
operation in ambient temperatures from -40°C to +125°C.
The ZXLD1366 uses a high-side output current sensing circuit
which uses an external resistor to set the nominal average output
current. The output current can be adjusted above, or below the set
value, by applying an external control signal to the 'ADJ' pin.
Enhanced output current dimming resolution can be achieved by
applying a PWM signal to the ‘ADJ’ pin.
Soft-start can be forced using an external capacitor from the ADJ
pin to ground. Applying a voltage of 0.2V or lower to the ADJ pin
turns the output off and switches the device into a low current
standby state.
Features
Typically Better than 0.8% Output Current Accuracy
Simple and with Low Part Count
Single Pin On/Off and Brightness Control Using DC Voltage or
PWM
PWM Resolution up to 1000:1
High Efficiency (up to 97%)
Switching Frequencies up to 1MHz
Wide Input Voltage Range: 6V to 60V
Inherent Open-Circuit LED Protection
Available in Thermally Enhanced Green Molding Packages
- SO-8EP
θJA = +45°C/W
- V-DFN3030-6 θJA = +44°C/W
- TSOT25
θJA = +82°C/W
Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green Device (Note 3)
Qualified to AEC-Q100 Grade 1
An Automotive Compliant part is available under a separate
datasheet (ZXLD1366Q)
Pin Assignments
(TOP VIEW)
LX 1
GND 2
5 VIN
ADJ 3
TSOT25
4 ISENSE
(TOP VIEW)
LX 1
6 VIN
GND 2
5 GND
ADJ 3
4 ISENSE
UV--DDFFNN33003300--66
(TOP VIEW)
LX 1
GND 2
GND 3
ADJ 4
8 VIN
7 GND
6 GND
5 ISENSE
SO-8EP
Typical Application Circuit
VIN (24V)
D1
Rs
0.2V
Applications
Low Voltage Industrial Lighting
LED Back-Up Lighting
Illuminated Signs
Emergency Lighting
SELV Lighting
Refrigeration Lights
C1 4.7µF
100nF
VIN
ADJ
GND
L1
ISEN SE
ZXLD1366
GND
LX
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free,
"Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)
and <1000ppm antimony compounds.
ZXLD1366
Document number: DS31992 Rev. 9 - 2
1 of 31
www.diodes.com
April 2016
© Diodes Incorporated



ZXLD1366
Block Diagram
VIN
D1
RS L1
5 VIN
4 ISENSE
1 LX
C1
4.7µF
5V R1
Vol tage
regulator
0.2V
-
+
Adj
3
R4 R5
50K 20K
600KHz
R2
D1
1.25V
Gnd
2
-
+
1.35V
R3
-
+ Low voltage
dete ctor
MN
-
+
Figure 1. Pin Connection for TSOT25 Package
ZXLD1366
Pin Description
Name
LX
GND
TSOT25
1
2
V-DFN3030-6
1
2, 5
ADJ 3
3
ISENSE
VIN
4
5
Pad -
4
6
Pad
SO-8EP
1
2, 3, 6, 7
4
5
8
Pad
Function
Drain of NDMOS switch
Ground (0V)
Multi-function On/Off and brightness control pin:
Leave floating for normal operation.(VADJ = VREF = 1.25V giving nominal
average output current IOUTnom = 0.2V/RS)
Drive to voltage below 0.2V to turn off output current
Drive with DC voltage (0.3V < VADJ < 2.5V) to adjust output current from 25%
to 200% of IOUTnom
Connect a capacitor from this pin to ground to set soft-start time.
Soft start time increases approximately 0.2ms/nF
Connect resistor RS from this pin to VIN to define nominal average output current
IOUTnom = 0.2V/RS.
(Note: RSMIN = 0.2V with ADJ pin open-circuit)
Input Voltage (6V to 60V). Decouple to ground with 4.7µF of higher X7R ceramic
capacitor close to device.
Exposed Pad (EP) - connected to device substrate.
To improve thermal impedance of package the EP must be connected to power
ground but should not be used as the 0V (GND) current path.
It can be left floating but must not be connected to any other voltage other than
0V.
ZXLD1366
Document number: DS31992 Rev. 9 - 2
2 of 31
www.diodes.com
April 2016
© Diodes Incorporated





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