AL3065 Datasheet, PDF (1/15 Pages) Diodes Incorporated – FOUR-CHANNEL CURRENT SOURCE BOOST LED DRIVER

AL3065
FOUR-CHANNEL CURRENT SOURCE BOOST LED DRIVER
Description
Pin Assignments
The AL3065 is a high efficiency 4-channel boost controller for WLED
backlight applications. It operates over a wide input voltage ranged
from 4.5V to 33V.
The current of the 4 channels is simply programmed from 20mA to
400mA with an external resistor. The current match between any
channel is ±1.5% (typical). Its operating frequency can be adjusted
from 0.1MHz to 1MHz.
The AL3065 can support three dimming modes: direct PWM dimming,
PWM to analog dimming and DC to analog dimming.
Robust protection features include cycle by cycle current limit, soft-
start, UVLO, programmable OVP, OTP, open/short LED protection,
Schottky Diode Short and Open Protection, Inductor Short-Circuit
Protection and VOUT Short protection.
The IC is available in SO-16 package.
Features
 Input Voltage Range: 4.5V to 33V
 Drivers up to 4 Strings in Parallel, 250mA per String, 400mA
Pulse Current
 ±3% Current Precision
 Low Ripple for Low BOM Cost
 4KV HBM ESD Class
 High Voltage Pins CS and OVP for Safety Test
 Supports Direct PWM Dimming, PWM to Analog Dimming and
DC to Analog Dimming Control
 Minimum PWM Dimming Duty Cycle can be 1/10,000 at 100Hz
Dimming Frequency
 LED Open/Short Protection
 Schottky Diode/Inductor Short-Circuit Protection
 Built-in OCP, OVP, OTP, UVLO, VOUT Short/Schottky Diode
Open Protection
 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
 Halogen and Antimony Free. “Green” Device (Note 3)
(Top Veiw)
CH4 1
ISET 2
OVP 3
RT 4
EN 5
CS 6
OUT 7
VCC 8
16 CH3
15 GND
14 CH2
13 CH1
12 DIM
11 COMP
10 ADIM
9 VIN
SO-16
Applications
 LCD Monitor
 LCD Display Module
 LCD TV
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.
Typical Applications Circuit
VIN
CIN
10mF
ON OFF
10kW
L 10mH
D
OUT
VIN
EN
CS
RCS
0.15W
COUT1
22mF
ROV1
1MW
COUT2
22mF
VOUT
ROV2
51kW
Adjustable
RT
120kW
RC
1kW
CC
0.22mF
RT
COMP
VCC
CVCC
2.2mF
VCC / DC signal / NC
3.3V/ ON OFF
ADIM
DIM
10kW
OVP
CH1
CH4
ISET
GND
RISET
10kW
AL3065
Document number: DS37677 Rev. 1 - 2
1 of 15
www.diodes.com
April 2015
© Diodes Incorporated