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IS31LT3353 Datasheet(PDF) 2 Page - Integrated Silicon Solution, Inc

Part # IS31LT3353
Description  40V/1A BUCK LED DRIVER WITH INTERNAL SWITCH
Download  15 Pages
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Manufacturer  ISSI [Integrated Silicon Solution, Inc]
Direct Link  http://www.issi.com
Logo ISSI - Integrated Silicon Solution, Inc

IS31LT3353 Datasheet(HTML) 2 Page - Integrated Silicon Solution, Inc

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IS31LT3353
Integrated Silicon Solution, Inc. – www.issi.com
2
Rev. A, 10/13/2014
PIN CONFIGURATION
Package
Pin Configuration
SOT23-5
1
2
34
5
ADJ
ISENSE
VIN
GND
LX
PIN DESCRIPTION
No.
Pin
Description
1
LX
Drain of power switch.
2
GND
Ground (0V).
3
ADJ
Multi-function On/Off and brightness control pin:
* Leave floating for normal operation.(VADJ = VREF = 1.2V giving
nominal average output current IOUT_NOM =0.1/RS )
* Drive to voltage below 0.2V to turn off output current.
* Drive with DC voltage (0.3V<VADJ <1.2V) to adjust output current
from 25% to 100% of IOUT_NOM.
* Drive with PWM signal to adjust output current.
* When driving the ADJ pin above 1.2V, the current will be
clamped to 100% brightness automatically.
4
ISENSE
Connect resistor RS from this pin to VIN to define nominal average
output current IOUT_NOM =0.1/RS.
5
VIN
Input voltage (6V ~ 40V). Decouple to ground with 0.1μF X7R
ceramic capacitor as close to device as possible.


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