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Diodes Semiconductor Electronic Components Datasheet

AL1697 Datasheet

Offline Dimmable LED Driver

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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



Diodes Semiconductor Electronic Components Datasheet

AL1697 Datasheet

Offline Dimmable LED Driver

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



Diodes Semiconductor Electronic Components Datasheet

AL1697 Datasheet

Offline Dimmable LED Driver

No Preview Available !

AL1697 pdf
AL1697
Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.) (Note 4)
Note:
Symbol
VCC
VD
IDS
VCS
VRT
VFB
TJ
TSTG
TLEAD
PD
JA
JC
Power Supply Voltage
Parameter
Voltage on Drain Pin (AL1697-20CS7-13)
Voltage on Drain Pin (AL1697-40DS7-13)
Continuous Drain Current TC = +25°C (AL1697-20CS7-13)
Continuous Drain Current TC = +25°C, (AL1697-40DS7-13)
Voltage on CS Pin
Voltage on RT Pin
Voltage on FB Pin
Operating Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 seconds)
Power Dissipation (TA = +50°C) (Note 5)
Thermal Resistance (Junction to Ambient) (Note 5)
Thermal Resistance (Junction to Case) (Note 5)
ESD (Human Body Model)
ESD (Machine Model)
Rating
18
600
670
2
4
-0.3 to 7
-0.3 to 7
-0.3 to 7
-40 to +150
-65 to +150
+260
0.8
123
19
2,000
200
Unit
V
V
V
A
A
V
V
V
°C
°C
°C
W
°C/W
°C/W
V
V
4. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied.
Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. All voltages unless otherwise stated and measured with
respect to GND.
5. Device mounted on 1"x1" FR-4 substrate PCB, 2oz copper, with minimum recommended pad layout.
Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.)
Note:
Symbol
TA
Parameter
Ambient Temperature (Note 6)
Min Max
-40 +105
6. The device may operate normally at +125°C ambient temperature under the condition not trigger temperature protection.
Unit
°C
AL1697
Document number: DS38223 Rev. 3 - 2
3 of 13
www.diodes.com
January 2016
© Diodes Incorporated




Part Number AL1697
Description Offline Dimmable LED Driver
Maker Diodes
Total Page 13 Pages
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