http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf



Diodes Semiconductor Electronic Components Datasheet


AL1697

Offline Dimmable LED Driver



No Preview Available !

AL1697 pdf
AL1697
High PF, Offline Dimmable LED Driver with Internal High-Voltage MOSFET
Description
The AL1697 is a high performance, high power factor, high efficiency
and high precision buck-boost LED driver for mains dimmable LED
lamp applications. The AL1697 topology provides an accurate output
current over wide line and load regulation. The wide switching
frequency operates at boundary conduction mode (BCM) to ease
EMI/EMC design, and testing to meet the latest regulatory standards.
The AL1697 with built in MOSFET solution reduces the bill of material
(BOM) cost by eliminating the need of auxiliary winding and an
external high voltage MOSFET. The AL1697 has extensive protection
features to enhance system safety and reliability. The AL1697 starts
reducing output current when the drivers temperature is higher than
the built-in thermal foldback protection trigger point.
Pin Assignments
(Top View)
VCC 1
RT 2
COMP 3
GND 4
SO-7
7D
6 CS
5 FB
The AL1697 applies to a wide range of dimmers including leading
edge and trailing edge dimmer. Some can achieve deep dimming
down to 1%. The AL1697 dimming curve is compliant with the NEMA
SSL6 standard.
The AL1697 is available in SO-7 package, which provides an extra
pin spacing between the high voltage MOSFET’s drain and low
voltage pins to increase electricity isolation.
Applications
Mains Dimmable LED Lamps
Offline LED Power Supply Driver
Features
Two Internal High-Voltage MOSFET Options:
RDSON 4and 1.8for Super-Junction
Tight Current Sense Tolerance : ±3%
Low Startup Current: 130µA
Low Operation Current: 170µA (Switching Frequency at 4kHz)
Single Winding Inductor
Wide Range of Dimmer Compatibility
NEMA SSL6 Dimming Curve Compliant
Internal Protections
Under Voltage Lockout (UVLO)
Leading-Edge Blanking (LEB)
Cycle-by-cycle Over Current Protection (OCP)
Output Open/Short Protection (OVP/OSP)
Thermal Foldback Protection (TFP)
Over-Temperature Protection (OTP)
SO-7 Package
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
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.
AL1697
Document number: DS38223 Rev. 3 - 2
1 of 13
www.diodes.com
January 2016
© Diodes Incorporated



No Preview Available !

AL1697 pdf
AL1697
Typical Applications Circuit
L1
AC
Input
FR1
DB1
R1
C1 C2 C3
R2
R3
VCC 1
RT 2
COMP 3
C4
R6
GND
C6 4
R4
D2
7D
6 CS
5 FB
R5
D1
R9
L2 R7
R8
C5
+
LEDS
Pin Descriptions
Pin Number
1
2
3
4
5
6
7
Pin Name
VCC
RT
COMP
GND
FB
CS
D
Power supply voltage
Resistor set the systems maximum tON
Compensation for current control
Ground
Feedback for LED open protection voltage
Current sensing
Drain of the internal high voltage MOSFET
Function
Functional Block Diagram
VCC 1
STOP
Fault
Management
OTP OVP
2
RT
Set tON_max
tON_max
COMP 3
4
GND
OFF
UVLO
VCC
Management
VCC
Clamp
S
R
Q
VDD
VREF
tONS Detection
(ZCD)
VCC
Driver Supply
Clamp
tON_max
STOP
-
+
-
Gm
+
VREF
Sample and Hold
OCP +
-
1V
VREF_OVP
OVP
OVP
D
7
6
CS
5
FB
AL1697
Document number: DS38223 Rev. 3 - 2
2 of 13
www.diodes.com
January 2016
© Diodes Incorporated



Part Number AL1697
Description Offline Dimmable LED Driver
Maker Diodes - Diodes
Total Page 13 Pages
PDF Download
AL1697 pdf
Download PDF File
AL1697 pdf
View for Mobile




Featured Datasheets

Part Number Description Manufacturers PDF
AL1663 UNIVERSAL FLYBACK AND BUCK-BOOST SINGLE STAGE DIMMABLE LED CONTROLLER AL1663
Diodes
PDF
AL1663R UNIVERSAL FLYBACK AND BUCK-BOOST SINGLE STAGE DIMMABLE LED CONTROLLER AL1663R
Diodes
PDF
AL1676 UNIVERSAL HIGH POWER FACTOR BUCK LED DRIVER AL1676
Diodes
PDF
AL1677 HIGH EFFICIENCY AND ACCURACY LED DRIVER CONVERTER AL1677
Diodes
PDF
AL1678-08B 500V BUCK LED DRIVER AL1678-08B
Diodes
PDF
AL1678-10B 500V BUCK LED DRIVER AL1678-10B
Diodes
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