http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf



Diodes Semiconductor Electronic Components Datasheet


AL3065

FOUR-CHANNEL CURRENT SOURCE BOOST LED DRIVER


No Preview Available !

AL3065 pdf
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



No Preview Available !

AL3065 pdf
AL3065
Pin Descriptions
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
CH4
ISET
OVP
RT
EN
CS
OUT
VCC
VIN
ADIM
COMP
DIM
CH1
CH2
GND
CH3
Function
LED current sink 4. Leave the pin open directly if not used.
LED current set pin. The corresponding maximum current of all 4 strings is set through connecting a
resister from this pin to GND.
Overvoltage protection pin. When the OVP pin voltage exceeds 2.0V, the OVP is triggered and the power
switch is turned off. When the OVP pin voltage drops below Hysteresis voltage, the OVP is released and
the power switch will resume normal operation.
Frequency control pin.
ON/OFF control pin. Forcing this pin voltage above 2.4V enables the IC while below 0.5V shuts down the
IC. When the IC is in shutdown mode, all functions are disabled to reduce the supply current below 3µA.
Power switch current sense input.
Boost converter power switch gate output. This pin outputs high voltage (10V) to drive the external N-
MOSFET.
10V linear regulator output pin. This pin should be bypassed to GND with a ceramic capacitor.
Supply input pin. A capacitor (typical 10µF) should be connected between the VIN and GND to keep the
DC input voltage constant.
Analog dimming pin, used in conjunction with DIM. When a DC voltage between 0V and 1.5V is applied
to this pin analog dimming is achieved if DIM is tied HIGH. When a capacitor is connected between this
pin and GND, the PWM signal applied to the DIM pin is filtered and modulates the output current. When
this pin is connected to a HIGH level, direct PWM dimming is achieved.
Soft-start and control loop compensation.
PWM dimming control pin, used in conjunction with ADIM. Apply the PWM signal to this pin. Tie this pin
to logic HIGH level, for analog dimming.
LED current sink 1. Leave the pin open directly if not used.
LED current sink 2. Leave the pin open directly if not used.
Ground
LED current sink 3. Leave the pin open directly if not used.
AL3065
Document number: DS37677 Rev. 1 - 2
2 of 15
www.diodes.com
April 2015
© Diodes Incorporated



Part Number AL3065
Description FOUR-CHANNEL CURRENT SOURCE BOOST LED DRIVER
Maker Diodes - Diodes
Total Page 15 Pages
PDF Download
AL3065 pdf
Download PDF File
AL3065 pdf
View for Mobile




Featured Datasheets

Part Number Description Manufacturers PDF
AL30-10 Diode AL30-10
American Microsemiconductor
PDF
AL30-100 Diode AL30-100
American Microsemiconductor
PDF
AL30-120 Diode AL30-120
American Microsemiconductor
PDF
AL30-20 Diode AL30-20
American Microsemiconductor
PDF
AL30-30 Diode AL30-30
American Microsemiconductor
PDF
AL30-40 Diode AL30-40
American Microsemiconductor
PDF


Part Number Start With

0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

site map

webmaste! click here

contact us

Buy Components