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ZXLD1350 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - 30V 350mA LED DRIVER - Diodes

भाग संख्या ZXLD1350
समारोह 30V 350mA LED DRIVER
मैन्युफैक्चरर्स Diodes 
लोगो Diodes लोगो 
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<?=ZXLD1350?> डेटा पत्रक पीडीएफ

ZXLD1350 pdf
Block Diagram
VIN
A Product Line of
Diodes Incorporated
ZXLD1350
30V 350mA LED DRIVER with AEC-Q100
RS
D1
C1
ADJ
VIN
Voltage
regulator
5V
Shutdown
circuit
200k 4KHz
VIN
R1
Current sense circuit
ISENSE
-
+
Comparator
-
+
R2
Vref 1.25V
R3
GND
Figure 1. Block diagram – Pin Connection
L1
LX
MN
Pin Description
Name
LX
GND
ADJ
ISENSE
VIN
Pin No.
1
2
3
4
5
Description
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=0.1/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
• Drive with PWM signal from open-collector or open-drain transistor, to adjust output current.
Adjustment range 25% to 100% of IOUTnom for f>10kHz and 1% to 100% of IOUTnom for f<500Hz
• Connect a capacitor from this pin to ground to increase soft-start time. (Default soft-start time=0.5ms.
Additional soft-start time is approx.0.5ms/nF)
Connect resistor RS from this to VIN to define nominal average output current IOUTnom=0.1/RS
(Note: RSMIN=0.27V with ADJ pin open circuit)
Input voltage (7V to 30V). Decouple to ground with 1µF of higher X7R ceramic capacitor close to
device
ZXLD1350
Document number: DS33468 Rev. 8 - 2
2 of 22
www.diodes.com
March 2011
© Diodes Incorporated

विन्यास 22 पेज
डाउनलोड[ ZXLD1350 Datasheet.PDF ]


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