Diodes AL3353 EV1 User Manual

General Description
This demonstration board utilizes AL3353 to
build a cost effective solution for boost LED
driver.
AL3353 is a LED driver controller designed
for boost converters in a constant frequency
mode. It implements a peak current mode
control scheme and an internal trans-
conductance amplifier to accurately control
the output current over a wide input and
load conditions.
This user guide contains rich information for
the users. A bill of materials is included that
describes the parts used on this board. A
schematic and PCB layout is also included
along with measured system performance
characteristics and test waveforms. These
materials can be used as a reference
design for your products to improve your
product's time to market.
Key Features
1. Wide Input Voltage Range: 20V to 36V
2. Constant Current Mode PWM Controller
3. PWM to Analog Dimming Mode
4. Audio Noise Free
5. Built-in Comprehensive Protections
a) Under Voltage Lock Out (UVLO)
b) Over Voltage Protection(OVP)
c) Over Current Protection(OCP)
d) Over Temperature Protection (OTP)
e) LED Open Protection
f) Output Short Protection
g) Diode & Inductor Short Protection
h) LED Cathode Short to GND Protection
6. Low system BOM cost
Applications

LCD TV

LCD Monitor

Flat Panel Display
AL3353
Mar.2019
www.diodes.com
AL3353EV1 User Guide
High Performance Boost LED Controller
Specifications
Parameter
Input Voltage
Output Power
Output Current
Output Voltage
Efficiency
Dimension
RoHS Compliance
Evaluation Board
Connection Instructions:
DC Positive Input: White Test Point (VIN)
DC Negative Input: Black Test Point (GND)
PWM Signal Input: P1 (PWM)
GND Signal Input: P1 (GND)
Positive Output: Yellow Test Point (LEDA)
Negative Output: Black Test Point (LEDK)
Value
20V ~ 36V
48W
800mA
60V
>90 %
70mm*50mm
Yes
Figure 1: Top View
Figure 2: Bottom View
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