Document
AL1696
HIGHLY INTEGRATION OFFLINE DIMMABLE LED DRIVER
Description
The AL1696 is a highly integrated high power factor constant current converter for mains dimmable LED driver applications. The AL1696 controls the system operating in boundary conduction mode (BCM) to ease in EMI/EMC qualification and testing to meet the latest regulatory standards.
The AL1696 with build-in MOSFET solution reduces the bill of material (BOM) cost by eliminating the need of auxiliary winding and external high voltage MOSFET.
Pin Assignments
(Top View)
NC 1 NC 2 CS 3 GND 4
7D
6 VCC 5 RT
The AL1696 can be compatible with a wide range of dimmers including leading edge and trailing edge dimmers. Some dimmers can achieve deep dimming down to 1%. The AL1696 dimming curve is compliant with the standard of NEMA SSL6.
The AL1696 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.
SO-7
Applications
Mains Dimmable LED Lamps Offline LED Power Supply Driver
Features
Internal MOSFET up to 300V/3A, 400V/3A, 500V/2A, 600V/2A Tight Current Sense Tolerance: ±3% Low Startup Current: 150µA Low Operation Current: 120µA (Switching Frequency at 5kHz) Single Winding Inductor Wide Range of Dimmer Compatibility Dimming Curve Compliant with NEMA SSL6 Internal Protections
Under Voltage Lockout (UVLO) Leading-Edge Blanking (LEB) Cycle-by-cycle Over Current Protection (OCP) Output Short Protection (OSP) 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.
AL1696
Document number: DS38304 Rev. 2 - 2
1 of 14 www.diodes.com
July 2016
© Diodes Incorporated
AL1696
Typical Applications Circuit
L1
AC Input
FR1
DB1 R1
C1 C2
NC 1
C3 R5
NC 2 CS 3 GND 4
U1 AL1696
7D
R2
R3
6 VCC
5 RT
C4
R6
R4 D2
D1
L2
R7
C5 LEDS
+ +
Buck-Boost Application Circuit
L1
FR1
NC 1
7D
R2
AC Input
R3 NC 2
U1 AL1696
DB1 R1
CS 3
6 VCC
C1 C2
C3 R5
GND 4
5 RT
C4
R4
R6
L2
D2
D1 R7
C5
LEDS
Buck Application Circuit
Pin Descriptions
Pin Number 1, 2 3 4 5 6 7
Pin Name NC CS GND RT VCC D
Function No connection Current sensing Ground Resistor set the system’s maximum tON Power supply voltage Drain of the internal high voltage MOSFET
AL1696
Document number: DS38304 Rev. 2 - 2
2 of 14 www.diodes.com
July 2016
© Diodes Incorporated
Functional Block Diagram
6
VCC
STOP
Fault
Management
5
RT
OSP OTP VRT_REF
Set tON_MAX
tON_MAX
NC 1, 2
OFF UVLO
S R
Q
ManaVgCeCment
VCC Clamp
VDD
VRT_REF VREF
OSP
tOFF
tOFF Detection (ZCD)
VCC
Driver Supply Clamp
GND 4
tON_MAX STOP
OCP
+ -
VREF
LEB
AL1696
7D
3
CS
AL1696
Document number: DS38304 Rev. 2 - 2
3 of 14 www.diodes.com
July 2016
© Diodes Incorporated
AL1696
Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.) (Note 4)
Symbol VCC
VD
ID
VCS VRT TJ TSTG TLEAD PD JA JC
–
Parameter Power Supply Voltage Voltage on D Pin (AL1696-30AS7-13) Voltage on D Pin (AL1696-30BAS7-13) Voltage on D Pin (AL1696-20BS7-13) Voltage on D Pin (AL1696-20CS7-13) Continuous Drain Current TC = +25°C (AL1696-30AS7-13) Continuous Drain Current TC = +25°C (AL1696-30BAS7-13) Continuous Drain Current TC = +25°C (AL1696-20BS7-13) Continuous Drain Current TC = +25°C (AL1696-20CS7-13) Voltage on CS Pin Voltage on RT Pin Operating Junction Temperature Storage Temperature Lead Temperature (Soldering, 10 seconds) Power Dissipation and Thermal Characteristics (TA = +50°C) Thermal Resistance (Junction to Ambient) (Note 5) Thermal Resistance (Junction to Case) (Note 5) ESD (Human Body Model) ESD (Machine Model)
Rating 18 300 400 500 600 3.0 3.0 2.0 2.0
-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 V V A A A A V V °C °C °C W
°C/W °C/W
V V
Notes:
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.
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.)
Symbol TA (N.