AL1676

AL1676
UNIVERSAL HIGH POWER FACTOR BUCK LED DRIVER
Description
Pin Assignments
The AL1676 is a universal AC input (85~277 VAC), high power factor
(Top View)
NEW PRODUCT
(PF) and high efficiency Buck LED driver. The AL1676 topology
provides accurate constant current (CC) with good line and load
regulation, operating at boundary conduction mode (BCM) to ease in
EMI/EMC qualification and testing to meet the latest regulatory laws.
The AL1676 single Buck stage driver works with a single winding
inductor and High voltage MOSFET included, therefore, can use
fewer external components and create a low bill of material (BOM)
cost solution. The AL1676 has rich protection features to enhance
system safety and reliability, including under voltage lock out (UVLO),
LED open/short, over voltage, over current, over temperature
protection and thermal fold-back function which can reduce output
current when the driver’s temperature is higher than the setting value.
7
D
COMP 3
6
NC
4
5
CS
VCC
1
ROVP
2
GND
SO-7
The AL1676 is available for SO-7 package.
Features


>90% Efficiency
Universal 85 to 277 VAC Input Range






Multiple Options for Internal MOSFET
Tight Output Current Tolerance: ±3%
Low Startup Current: 100µA
Low Operation Current: 170µA (5KHs Switching)
Single Winding Inductor
Internal Protections:
 Under Voltage Lock Out (UVLO)

Leading-Edge Blanking (LEB)

Cycle-by-cycle Over Current Protection (OCP)

Output Open/Short Protection (OVP/OSP)

Thermal Fold-back Protection (TFP)

Over Temperature Protection (OTP)
Applications





SO-7 Package

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)
Notes:
Retrofit LED Lamps
LED Tube
High Voltage DC-DC LED Driver
General Purpose Constant Current Source
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.
AL1676
Document number: DS38290 Rev. 1 - 2
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AL1676
Typical Applications Circuit
L1
R1
C5
+
OUT
L2
F1
AC
Input
R2
DB1
NEW PRODUCT
R4
D1
U1 AL1676
VR
C2
C1
VCC
D
ROVP
C3
R3
COMP
NC
GND
CS
C4
R5
Pin Descriptions
Pin Number
Pin Name
Function
1
VCC
2
ROVP
Resistor set the open voltage
3
COMP
Compensation for current control
4
GND
5
CS
Current sensing
6
NC
No connection
7
D
Power supply voltage
Ground
Drain of the internal high voltage MOSFET
Functional Block Diagram
VCC
OFF
Fault
Management
STOP
VCC
Management
UVLO
VDD
OSP
OTP
D
2
6
NC
5
CS
VREF
tOFF
OSP
tOFF Detection
(ZCD)
OVP
tOFF
VOVP_REF
VCC
Clamp
OVP
OVP
ROVP
7
1
VOVP_REF
VCC
Driver Supply
Clamp
S
R
Q
COMP
3
+
STOP
OCP
GND
AL1676
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+
Gm
-
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0.8V
VREF
Sample and
Hold
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AL1676
Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.) (Note 4)
Symbol
Rating
Unit
Power Supply Voltage
18
V
Voltage on D Pin (AL1676-20AS7-13)
300
V
Voltage on D Pin (AL1676-30AS7-13)
300
V
Voltage on D Pin (AL1676-10BS7-13)
500
V
Voltage on D Pin (AL1676-20BS7-13)
500
V
Voltage on D Pin (AL1676-20CS7-13)
600
V
Voltage on D Pin (AL1676-40DCS7-13)
670
V
Continuous Drain Current TC = +25°C (AL1676-20AS7-13)
2.0
A
Continuous Drain Current TC = +25°C (AL1676-30AS7-13)
3.0
A
Continuous Drain Current TC = +25°C (AL1676-10BS7-13)
1.0
A
Continuous Drain Current TC = +25°C (AL1676-20BS7-13)
2.0
A
Continuous Drain Current TC = +25°C (AL1676-20CS7-13)
2.0
A
Continuous Drain Current TC= +25°C (AL1676-40DS7-13)
4.0
A
Voltage on CS Pin
-0.3 to 7
V
Voltage on ROVP Pin
-0.3 to 7
V
Operating Junction Temperature
-40 to +150
°C
TSTG
Storage Temperature
-65 to +150
°C
TLEAD
Lead Temperature (Soldering, 10 seconds)
+260
°C
VCC
Parameter
NEW PRODUCT
VD
ID
VCS
VROVP
TJ
PD
Power Dissipation and Thermal Characteristics (TA = +50°C)
0.8
W
JA
Thermal Resistance (Junction to Ambient) (Note 5)
123
°C/W
JC
Thermal Resistance (Junction to Case) (Note 5)
19
ºC/W
ESD (Human Body Model)
2000
V
ESD (Machine Model)
200
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
Note 6:
Parameter
Ambient Temperature (Note 6)
Min
Max
Unit
-40
+105
°C
The device can operate normally at +125°C ambient temperature under the condition that the junction temperature is less than +150°C.
AL1676
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AL1676
Electrical Characteristics
Symbol
(@TA = +25°C, unless otherwise specified.)
Parameter
Conditions
Min
Typ
Max
Unit
UVLO
VTH(ST)
VOPR(Min)
NEW PRODUCT
VCC_CLAMP
Startup Voltage
–
–
14.5
–
V
Minimal Operating Voltage
After Turn On
–
8.5
–
V
VCC Clamp Voltage
ICC = 1mA
–
15.5
–
V
VCC = VTH(ST)-0.5V,
Before Start up
Switching Frequency
at 5kHz
–
100
–
µA
–
170
–
µA
AL1676-20AS7-13
–
–
6.5
AL1676-30AS7-13
–
–
3
AL1676-10BS7-13
–
–
12
AL1676-20BS7-13
–
–
6
AL1676-20CS7-13
–
–
5.5
AL1676-40DS7-13
–
–
2.5
AL1676-20AS7-13
–
–
2.0
AL1676-30AS7-13
–
–
3.0
AL1676-10BS7-13
–
–
1.0
AL1676-20BS7-13
–
–
2.0
AL1676-20CS7-13
–
–
2.0
AL1676-40DS7-13
–
–
4.0
AL1676-20AS7-13
300
–
–
AL1676-30AS7-13
300
–
–
AL1676-10BS7-13
500
–
–
AL1676-20BS7-13
500
–
–
AL1676-20CS7-13
600
–
–
AL1676-40DS7-13
650
–
–
AL1676-20AS7-13
–
–
1
AL1676-30AS7-13
–
–
1
AL1676-10BS7-13
–
–
1
AL1676-20BS7-13
–
–
1
AL1676-20CS7-13
–
–
1
AL1676-40DS7-13
–
–
1
Standby Current
IST
ICC(OPR)
Start-up Current
Operating Current
Internal High Voltage MOSFET
RDS(ON)
IDS
VDS
IDSS
Ω
Drain-Source On-State Resistance
Continuous Drain-Source Current
A
Drain-Source Voltage
V
Drain-Source Leakage Current
AL1676
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µA
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AL1676
Electrical Characteristics
Symbol
(@TA = +25°C, unless otherwise specified.) (Cont.)
Parameter
Conditions
Min
Typ
Max
Unit
ROVP
Reference Voltage of ROVP Pin
–
–
0.5
–
V
Internal Reference Voltage
–
–
0.400
–
V
VCS Clamp Voltage
–
–
0.8
–
V
tON_MIN
Minimum tON
–
–
550
–
ns
tON_MAX
Maximum tON
–
–
29
–
µs
180
–
µs
6
–
µs
25
–
µA/V
10
–
µA
9
–
µA
VROVP
Current Sense
NEW PRODUCT
VREF
VCS_CLAMP
tOFF_MAX
–
Maximum tOFF
Minimum tOFF (Note 7)
–
Gm
Gm Trans-conductance
–
ISOURCE
Amplifier Source Current
–
tOFF_MIN
–
–
Error Amplifier
ISINK
–
Amplifier Sink Current
–
–
–
Thermal Foldback and Over Temperature Protection
TREG
–
Notes:
Overheating Temperature
Regulation (Note 7)
–
–
+150
–
°C
Shutdown Temperature (Notes 7, 8)
–
–
+170
–
°C
7. These parameters, although guaranteed by design, are not 100% tested in production.
8. The device will latch off when OTP happens, recovered after power cycle and device won’t operating normally at this temperature.
AL1676
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AL1676
Performance Characteristics (Note 9)
Start-up Voltage vs. Ambient Temperature
Start-up Current vs. Ambient Temperature
16.0
190
15.5
180
Start-up Current (A)
Start-up Voltage (V)
14.5
14.0
13.5
13.0
170
160
150
140
12.5
12.0
-40
-20
0
20
40
60
80
100
130
-40
120
-20
0
20
Minimal Operating Voltage vs. Ambient Temperature
100
120
190
9.5
180
9.0
Operating Current (A)
Minimal Operating Voltage (V)
80
Operating Current vs. Ambient Temperature
10.0
8.5
8.0
7.5
7.0
6.5
170
160
150
140
130
-20
0
20
40
60
80
100
120
o
120
-40
-20
0
20
Ambient Temperature ( C)
40
60
80
100
120
o
Ambient Temperature ( C)
VREF vs. Ambient Temperature
VROVP Reference vs. Ambient Temperature
0.60
0.45
0.55
0.40
0.50
VROVP Reference (V)
0.50
0.35
0.30
0.25
0.20
-40
60
Ambient Temperature ( C)
Ambient Temperature ( C)
6.0
-40
40
o
o
VREF (V)
NEW PRODUCT
15.0
0.45
0.40
0.35
-20
0
20
40
60
80
100
120
o
AL1676
Document number: DS38290 Rev. 1 - 2
0.30
-40
-20
0
20
40
60
80
100
120
o
Ambient Temperature ( C)
Ambient Temperature ( C)
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AL1676
Performance Characteristics (Cont.) (Note 9)
VCC Clamp Voltage vs. Ambient Temperature
VREF vs. Ambient Temperature
0.50
24
0.45
0.40
0.35
18
0.30
VREF (V)
NEW PRODUCT
VCC Clamp Voltage (V)
21
15
0.25
0.20
12
0.15
0.10
9
0.05
6
-40
-20
0
20
40
60
80
100
0.00
-40
120
0
20
40
60
80
100
120
140
160
180
o
Ambient Temperature ( C)
Note 9:
-20
Ambient Temperature ( C)
o
These electrical characteristics are tested under DC condition. The ambient temperature is equal to the junction temperature of the device.
AL1676
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AL1676
Functional Description and Application Information
Convertor Operation
The AL1676 is a high efficiency and high power factor BUCK LED driver solution for universal input application based on single winding inductor. It
is available for 6 internal MOSFET options (300V/2A, 300V/3A, 500/1A, 500V/2A, 600V/2A, 650V/4A) which can help to reduce the overall LED
driver solution size of the LED lamp. This 6 MOSFET options can cover most of the 3~18W applications.
High power factor (PF) is achieved by constant on-time control. Coupled with simple closed loop of constant current control, the AL1676 can
achieve good line and load regulation. The AL1676 adopts source-driver technique to decrease the system operating current. It uses a novel
NEW PRODUCT
method to detect the tOFF time which helps to get rid of an auxiliary winding for (VCC supply and) detecting the tOFF time, resulting in an extremely
low bill material (BOM). The AL1676 operates at boundary conduction mode (BCM) which can ease EMI design.
L1
R1
R4
D1
C5
+
OUT
L2
F1
AC
Input
R2
DB1
C1
C2
U1 AL1676
VR
VCC
D
ROVP
C3
R3
COMP
NC
GND
CS
C4
R5
Figure 1. Typical Application Circuit
Start-up and Supply Voltage
Before start-up, the VCC capacitor C3 is charged by the startup resistors (R1, R2) from the high voltage mains. When the start-up voltage is
reached, the AL1676 starts switching. During normal operation, the VCC supply is provided by start-up resisters (R1, R2) and internal source
driver circuit.
The AL1676 has an internal VCC clamp voltage (typical 15.5V), which is limited by one internal active Zener diode.
When VCC voltage drops to below the under voltage lockout (UVLO), switching stops, the IC can restart when the voltage on VCC pin is
exceeding the startup voltage (VTH(ST)).
Protections
Under Voltage Lockout (UVLO)
When the voltage on the VCC pin drops to below VOPR(Min), the IC stops switching. The IC can restart when the voltage on VCC exceeds the
startup voltage (VTH(ST))
Leading-Edge Blanking (LEB)
To prevent false detection of the peak current of the inductor, a blanking time following switch-on is designed. When the internal switch turns on, a
short current spike can occur because of the capacitive discharge of the voltage over the drain and source. It is disregarded during the LEB time
(tON_MIN).
Cycle-by-cycle Over Current Protection (OCP)
The AL1676 has a built-in peak current detector. It triggers when the voltage on CS pin reaches the peak level VCS_CLAMP. The R5 is connected to
the CS pin to sense the current of the inductor. The maximum peak current (IPEAK(MAX)) of the inductor can be calculated as below:
I PEAK  MAX  
VCS _ CLAMP
R5
…………… (1)
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AL1676
Functional Description and Application Information (Cont.)
The detection circuit is activated after the LEB time. When the detection circuit sense the CS voltage is higher than 1V, the IC will turn off the
switch to limit the output current. It automatically provides protection for the maximum LED current during operation. A propagation delay exists
between over current detection and actual source-switch off, so the actual peak current is a little higher than the OCP level set by the R5.
Over-Voltage Protection and Output-Open Protection (OVP)
The AL1676 has output open voltage protection when the LED is open, which can prevent the output voltage from increasing to a very high value.
NEW PRODUCT
This feature can help the system designer to select a smaller volume capacitor. The output voltage is set by the external resistor R3 shown in
Figure 1.
When LED is open, the tOFF_OVP time can be calculated as:
tOFF _ OVP 
L1VCS
…………… (2)
VOVP  R5
Where,
VOVP is the output open voltage.
VCS is the voltage on the CS pin when OVP happens.
The output voltage is set by R3, and R3 is calculated as:
R3 
VROVP _ REF  t OFF _ OVP
20  C REF  VCS

VROVP _ REF  L1
20  C REF  VOVP  R5
…………… (3)
Where, VROVP_REF is the internal ROVP pin 0.5V’s reference, CREF is the internal 6pF capacitor.
Output-Short Protection (OSP)
When LED is shorted, the device cannot detect the tOFF time, and the device controls the system operating at 5kHz low switching frequency.
Thermal Foldback Protection (TFP)
The AL1676 has a thermal foldback function and adopts self-adaptive control method, which can prevent the system from breaking down caused
by high temperature. The overheating temperature is set at +150°C typical, when the junction temperature of the IC is higher than +150°C typical,
the device will linearly decrease the internal reference voltage to decrease the output current. As a result of this feature, the device can control the
system’s output power at high ambient temperature, to control the quantity of heat of the system. This enhances the safety of the system at high
temperature.
The thermal foldback waveform is shown below:
Figure 2. Thermal Foldback Waveform
AL1676
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AL1676
Functional Description and Application Information (Cont.)
Over-Temperature Protection (OTP)
The AL1676 has OTP protection function. When the junction temperature reaches +170°C typical, the IC will trigger an over-temperature
protection condition which causes the device to shut down and latch. Once OTP has triggered, the system will resume after the system’s input
power supply has been reset and power up.
Design Parameters
NEW PRODUCT
Setting the Current Sense Resistor R5
In buck structure, when output is larger than input, no energy will be transferred to output, this period is called dead zone, and the dead zone
angle is θ .
VO
 =a sin
2 VIN _ RMS
…………… (4)
Where,
VO is the output voltage.
VIN_RMS is the RMS value of the input voltage.
The AL1676 adopts boundary conduction mode, the output current is calculated as below,
1
I O _ MEAN 

 -



Vo
tON  tOFF
1
 I PEAK (sin( ) 
)
dt …………… (5)
2
2VIN _ RMS tON  tOFF  tDELAY
Where,
IPEAK is the peak current of the inductance.
tON is the internal MOSFET on time.
tOFF is the freewheel diode D1’s conduction time.
tDELAY is typically 0.15µs.
The AL1676 is a closed loop constant current control, so it has the equation.
VREF 
1

 -

I

PEAK
(sin( ) 
Vo
2VIN _ RMS
)  R5 
tON
tON  tOFF
dt …………… (6)
 tOFF  tDELAY
Where,
VREF is the internal reference, typical 0.4V, R5 is the current sense resistor.
So we can get the output current equation as below,
1 V
I O _ MEAN =  REF …………… (7)
2 R5
Inductance Selection (L1)
In buck structure, the peak current of the inductor can be calculated as below,
I PEAK 
 -
R5 


 VREF
Vo
tON  tOFF
(sin( ) 
)
dt …………… (8)
2VIN _ RMS tON  tOFF  tDELAY
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AL1676
Functional Description and Application Information (Cont.)
The AL1676 controls the system operating at boundary conduction mode which results in its operating frequency inconstant. To set the minimum
switching frequency fMIN at the crest of the minimum AC input.
NEW PRODUCT
L2 
( 2VIN _ RMS  VO ) VO
I PEAK  2VIN _ RMS  f MIN
…………… (9)
According to the Faraday’s Law of Induction, the winding number of the inductance can be calculated by:
NL2 
L 2  I PEAK
…………… (10)
Ae  Bm
Where,
Ae is the core effective area.
Bm is the maximum magnetic flux density.
The AL1676 has designed the minimum tON time and maximum tON time, the tON_MIN is about 700ns and the tON_MAX time is about 29µs. In buck
topology there is the equation VIN_RMS-VO=L*IPEAK/tON. If the inductance is too small, it will make tON smaller than tON_MIN, the device cannot
detect the peak current of the system, resulting in incorrect output current. If the inductance is too large, make tON longer than the tON_MAX, the
system’s output current will decrease because of the limit of the tON_MAX.
The AL1676 has also the limitation of minimum tOFF time and maximum tOFF time, the tOFF_MIN time is about 6µs and tOFF_MAX time is about 180µs.
In buck topology there is the equation VO=L*IPEAK/tOFF. If the inductance is too small, make tOFF smaller than tOFF_MIN, the system will enter DCM
mode, and the output current will be incorrect. If the inductance is too large, make tOFF longer than tOFF_MAX, the system will enter CCM mode, and
the output current will also be incorrect. So a suitable value of the inductance is very important.
Consider these parameters, two examples of the typical application inductance is recommended as below:
System spec
Inductance Value
System Frequency
tON_MIN
tOFF
60V/100mA (85~265VAC)
2.2mH
64KHz(230 VAC)
2.4µs (265 VAC)
12.6µs
42V/150mA (85~265 VAC)
1.1mH
64KHz(230 VAC)
1.6µs (265 VAC)
13.5µs
Recommended Applications
The AL1676 integrates different MOSFET to adapt different wattage application. The output current is limited by the integrated MOSFET, and the
SO-7 package’s heat dissipation capability. The minimum output voltage is limited by the LEB time, and the minimum output voltage is
recommended to 20V. The recommended application is given below:
Device
Output Power Coverage
Maximum Output Current
Minimum Output Voltage
AL1676-20A
≤10W
≤200mA
20V
AL1676-30A
≤13W
≤300mA
20V
AL1676-10B
≤7W
≤120mA
20V
AL1676-20B
≤10W
≤200mA
20V
AL1676-20C
≤10W
≤200mA
20V
AL1676-40D
≤18W
≤350mA
20V
AL1676
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AL1676
Ordering Information
AL1676–XX X XX–13
NEW PRODUCT
Current Option
MOSFET Voltage
10 : 1.0A
20 : 2.0A
30 : 3.0A
40 : 4.0A
A:
B:
C:
D:
300V
500V
600V
650V
Part Number
Package code
Package
AL1676-20AS7-13
S7
AL1676-30AS7-13
Package
Packing
S7 : SO-7
13 :13" Tape & Reel
13” Tape and Reel
Quantity
Part Number Suffix
SO-7
4000/Tape & Reel
-13
S7
SO-7
4000/Tape & Reel
-13
AL1676-10BS7-13
S7
SO-7
4000/Tape & Reel
-13
AL1676-20BS7-13
S7
SO-7
4000/Tape & Reel
-13
AL1676-20CS7-13
S7
SO-7
4000/Tape & Reel
-13
AL1676-40DS7-13
S7
SO-7
4000/Tape & Reel
-13
Marking Information
(Top View)
7
6
5
Logo
Part Number
1676-20A for 2.0A/300V
1676-30A for 3.0A/300V
1676-10B for 1.0A/500V
1676-20B for 2.0A/500V
1676-20C for 2.0A/600V
1676-40D for 4.0A/650V
AL1676
Document number: DS38290 Rev. 1 - 2
YY : Year : 15,16,17 ~
WW : Week : 01~52; 52
represents 52 and 53 week
X X : Internal Code
1676- XXX
YY WW X X
1
2
3
4
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Package Outline Dimensions (All dimensions in mm.)
(1)
Package Type: SO-7
5.800(0.228)
1.350(0.053)
1.750(0.069)
NEW PRODUCT
6.200(0.244)
0.330(0.013)
0.510(0.020)
2.54(0.100)
TYP
4.700(0.185)
5.100(0.201)
1.270(0.050)
TYP
0.080(0.003)
0.250(0.010)
3.800(0.150)
4.000(0.157)
1.250(0.049)
1.500(0.059)
0.350(0.014)
TYP
0°
8°
Option 1
0.450(0.017)
0.800(0.031)
45°
0.150(0.006)
0.250(0.010)
Option 2
Note: Eject hole, oriented hole and mold mark is optional.
AL1676
Document number: DS38290 Rev. 1 - 2
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Suggested Pad Layout
Package Type: SO-7
NEW PRODUCT
(1)
G
Z
E1
Y
X
E
Dimensions
Z
(mm)/(inch)
G
(mm)/(inch)
X
(mm)/(inch)
Y
(mm)/(inch)
E
(mm)/(inch)
E1
(mm)/(inch)
Value
6.900/0.272
3.900/0.154
0.650/0.026
1.500/0.059
1.270/0.050
2.540/0.100
AL1676
Document number: DS38290 Rev. 1 - 2
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IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
NEW PRODUCT
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume
all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated
website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and
hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.
This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
final and determinative format released by Diodes Incorporated.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2016, Diodes Incorporated
www.diodes.com
AL1676
Document number: DS38290 Rev. 1 - 2
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February 2016
© Diodes Incorporated
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