AL8820

AL8820
40V, 2A BOOST/BUCK LED DRIVER
Description
Pin Assignments
(Top View)
The device integrates two DC/DC converters. The Two stage design
offers superior performance for MR16/AR111 applications. The first
stage is a boost PFC stage which improves PF, reduces EMI, powers
up the Buck stage and the compatibility of Electronic Transformers.
The Buck stage regulates the LED current thru the setting of external
sense resistor. The integrated low RDSON of integrated MOSFETs
reduce the conduction power loss. A compact thermally efficient SO8EP package, the AL8820 provides an ideal solution for MR16/AR111
applications.
Features










Notes:
SW2
7
VCC
3
6
VIN
4
5
CS2
1
CS1
2
FB
COMP
EP
Applications



Wide Input Voltage Range: 5V to 36V
Internal 40V NDMOS Switch
2A Output Current
Continuous Conduction Mode (CCM) Operation
Up to 1MHz Switching Frequency
High PF > 0.9 and Low THD < 30% and Low Ripple < 20%
Internal Protections

Under Voltage Lock Out (UVLO)

Output Open/Short Protection

Over Temperature Protection (OTP)
SO-8EP
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
8
SW1
SO-8EP
MR16 Lamps
AR111
General Illumination Lamps
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
L1
L2
D1
Vac
D2
RSET2
D5
D3
R1
D4
C1
C2
D6
C5
VOUT
R2
L3
RSET1
RHYS
SW2
SW1
CS1
FB
AL8820
NEW PRODUCT
The AL8820 is a highly integrated high performance LED driver
optimized for MR16/AR111 and other similar LED lamp applications.
With a proprietary control scheme, the LED driver is compatible with
many commonly used electronic transformers and meets High Power
Factor (PF) and low Total Harmonic Distortion (THD) requirements for
these applications.
COMP
C4
AL8820
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VCC
C3
VIN
CS2
(Exposed Pad)
December 2014
© Diodes Incorporated
AL8820
Pin Descriptions
Pin Name
1
SW1
Integrated Boost MOS Drain
2
CS1
Boost Input Current Sense Pin
3
FB
4
COMP
5
CS2
Buck Output Current Sense Pin
6
VIN
IC Input Voltage, Adding from Boost Output Voltage
7
VCC
Supply Voltage For Internal Circuit
8
SW2
Integrated Buck MOS Drain
9
Exposed Pad
NEW PRODUCT
Pin Number
Function
Boost Output Voltage Feedback Pin
Soft-start and Boost Control Loop Compensation
Connected To Ground
Functional Block Diagram
VIN
CS2
6
5
VCC
Internal
Regulator
VCC
CS2
VREF
7
ICS
Trimming
Resistor
VCS2
HYSTERESIS
COMPARATOR
VBG
UVLO
Chip_EN
Driver
VREF
VIN
OVP
CTL
9
OVP
LOGIC
GND
PWM1
2
IHYS
OTP
VFB
SW2
VCC
VBG
Bandgap
8
CS1
CS1
OTP
VCS1
1
VCC
SW1
Driver
COMPARATOR
3
FB
PWM1
EA
IHYS
VBG
4
COMP
AL8820
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AL8820
Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified. Note 4)
NEW PRODUCT
Parameter
Symbol
Value
Unit
VIN Pin Voltage
VIN
-0.3 to 40
V
SW1 Pin Voltage
VSW1
-0.3 to 40
V
SW2 Pin Voltage
VSW2
-0.3 to 40
V
COMP Pin Voltage
VCOMP
-0.3 to 6
V
CS1 Pin Voltage
VCS1
-0.3 to 6
V
CS2 Pin Voltage
VCS2
-0.3 to 40
V
FB Pin Voltage
VFB
-0.3 to 6
V
VCC Pin Voltage
VCC
-0.3 to 6
V
TJ
+150
ºC
TSTG
-65 to +150
ºC
θJA
66
°C/W
TLEAD
+300
ºC
ESD (Machine Model)
–
200
V
ESD (Human Body Model)
–
2000
V
Operating Junction Temperature
Storage Temperature
Thermal Resistance (Junction To Ambient) (Note 5)
Lead Temperature (Soldering, 10sec)
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 FR-4 PCB (51mm x 51mm) 2oz copper, minimum recommended pad layout on top layer and thermal vias to bottom layer ground
plane. For better thermal performance, larger copper pad for heat-sink is needed.
Recommended Operating Conditions
Symbol
Parameter
VIN
VIN Pin Voltage
TA
Ambient Temperature
AL8820
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Min
Max
Unit
5
36
V
-40
+105
°C
December 2014
© Diodes Incorporated
AL8820
Electrical Characteristics
(@TA = +25°C, unless otherwise specified.)
Parameters
Symbol
Conditions
Min
Typ
Max
Unit
NEW PRODUCT
Input Supply
VIN Pin Voltage
VIN
–
5
–
36
V
Quiescent Current
IQ
No Switching
–
1
–
mA
Under-Voltage Lockout Voltage
VUVLO
VIN Rising
–
4.2
–
V
UVLO Hysteresis
VHYS
–
–
500
–
mV
VCC
–
4.5
5
5.5
V
VCC Regulator
VCC Pin Voltage
Source Current Capability
–
VCC = 5V
10
–
–
mA
Load Regulation
–
–
–
4
–
%
MOS Voltage Stress (Note 6)
VDS1
–
–
40
–
V
MOS Current Stress (Note 6)
IDS1
–
–
2
–
A
RDSON1
–
–
250
–
mΩ
MOS Voltage Stress (Note 6)
VDS2
–
–
40
–
V
MOS Current Stress (Note 6)
IDS2
–
–
2
–
A
RDSON2
–
–
250
–
mΩ
Error Amplifier Trans-conductance
GEA
–
–
1000
–
µA/V
Sourcing Current
IO_H
VCOMP = 0.5V
–
68
–
µA
Sinking Current
IO_L
VCOMP = 4.5V
–
68
–
µA
FB Pin Voltage
VFB
–
1.18
1.22
1.26
V
VOVP
–
1.59
1.66
1.75
V
VOVP_HYS
–
0.15
0.2
0.25
V
VCS1_MIN
VCOMP = 0V
–
-90
–
mV
IHYS
–
85
100
115
µA
Buck Sense Voltage High Level
VCSH
–
–
115
–
mV
Buck Sense Voltage Low Level
VCSL
–
–
85
–
mV
VCS2_AVE
–
95
100
105
mV
Thermal Shutdown (Note 6)
TOTSD
–
+140
+160
–
ºC
Thermal Shutdown Hysteresis (Note 6)
THYS
–
–
+40
–
ºC
Integrated NMOS_BUCK
MOS RDSON
Integrated NMOS_BOOST
MOS RDSON
Compensation and Soft Start (COMP Pin)
FB OVP Voltage
FB OVP Voltage Hysteresis
Hysteresis Competitor (Boost)
Boost Sense Voltage Low Level
Hysteresis Current
Hysteresis Competitor (Buck)
Buck Sense Voltage Average Level
Over-Temperature Protection
Note 6:
These parameters, although guaranteed by design, are not 100% tested in production.
AL8820
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AL8820
Performance Characteristics
Quiescent Current vs. VIN Pin Voltage
Quiescent Current vs. Ambient Temperature
1.4
1.4
Quiescent Current (mA)
Quiescent Current (mA)
1.2
1.1
1.0
0.9
0.8
1.2
1.1
1.0
0.9
0.8
0.7
0.7
0.6
-45
0.6
4
8
12
16
20
24
28
32
36
-30
-15
0
15
30
45
60
75
VCC Pin Voltage vs. VIN Pin Voltage
105
VCC Pin Voltage vs. Ambient Temperature
5.5
5.4
VIN = 12V
5.4
5.3
5.3
VCC Pin Voltage (V)
VCC Pin Voltage (V)
90
o
Ambient Temperature ( C)
VIN Pin Voltage (V)
5.2
5.1
5.0
5.2
5.1
5.0
4.9
4.8
4.7
4.9
4.6
4.8
4
8
12
16
20
24
28
32
36
VIN Pin Voltage (V)
4.5
-45
-30
-15
0
15
30
45
60
75
90
105
o
Ambient Temperature ( C)
FB Pin Voltage vs.VIN Pin Voltage
FB Pin Voltage vs. Ambient Temperature
1.24
1.24
1.23
1.23
FB Pin Voltage (V)
VIN = 12V
FB Pin Voltage (V)
NEW PRODUCT
VIN = 12V
1.3
1.3
1.22
1.21
1.21
1.20
1.20
1.19
4
1.22
8
12
16
20
24
28
32
36
1.19
-45
Vin Pin Voltage (V)
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15
30
45
60
75
90
105
o
Ambient Temperature ( C)
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AL8820
Performance Characteristics (Cont.)
Boost Sense Voltage Low Level vs.
VIN Pin Voltage
Boost Sense Voltage Low Level vs.
Ambient Temperature
-80
Boost Sense Voltage Low Level (mV)
NEW PRODUCT
Boost Sense Voltage Low Level (mV)
-80
-82
-84
-86
-88
-90
-92
4
8
12
16
20
24
28
32
VIN = 12V
-82
-84
-86
-88
-90
-92
-45
36
Vin Pin Voltage (V)
-30
-15
0
15
30
45
60
75
90
105
o
Ambient Temperature ( C)
Hysteresis Current vs. Ambient Temperature
114
114
112
112
110
110
Hysteresis Current (A)
Hysteresis Current (A)
Hysteresis Current vs. VIN Pin Voltage
108
106
104
102
108
106
104
102
100
100
98
4
VIN = 12V
8
12
16
20
24
28
32
98
-45
36
-30
-15
Vin Pin Voltage (V)
15
30
45
60
75
90
105
o
Buck Sense Voltage Average Level vs.
VIN Pin Voltage
Buck Sense Voltage Average Level vs.
Ambient Temperature
104
104
Buck Sense Voltage Average Level (mV)
Buck Sense Voltage Average Level (mV)
0
Ambient Temperature ( C)
103
102
101
100
99
98
4
8
12
16
20
24
28
32
36
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102
101
100
99
98
-45
-30
-15
0
15
30
45
60
75
90
105
o
Ambient Temperature ( C)
VIN Pin Voltage (V)
AL8820
VIN = 12V
103
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Application Information
AL8820 Operation
The device integrates two DC/DC regulators. This two stage design offers superior performance for MR16/AR111 applications. The first stage is a
boost PFC stage which improves PF, reduces EMI and conditions the input to be compatible with many of the most commonly used Electronic
Transformers (ET). This input stage also provides power for the second stage buck converter which provides regulated constant output current for
the LEDs.
L1
NEW PRODUCT
L2
D1
Vac
D2
RSET2
D5
D3
R1
D4
C1
C2
D6
C5
VLED
R2
L3
RSET1
RHYS
SW2
CS1
FB
AL8820
SW1
C3
VIN
CS2
COMP
C4
VCC
(Exposed Pad)
Figure 1. Typical Application Circuit
VIN Voltage Setting
VIN Voltage is the output voltage of boost section and is also the input voltage of the buck section. Therefore V IN must be set sufficiently higher
than the output voltage of buck section. For the Boost application, the output voltage can be defined as:
VIN  1.22V 
R1  R 2
R2
RSET1 and RHYS Setting
The Boost converter of the AL8820 operates at continuous conduction mode and is based on hysteresis schematic which has lower threshold and
upper threshold. Refer to Figure 2 depicting the inductor current waveform.
IL
Peak or Upper Threshold
IL
IL(peak)
IL(ave)
IL(val)
Valley or Lower Threshold
tON
tOFF
Time
Figure 2. Inductor Current
When switch SW1 is turned on, the inductor current flows through RSET1 and ramps up linearly. The rising current produces a voltage ramp across
RSET1. When the voltage across RSET1 reaches the upper threshold, switch SW1 is turned off. The inductor current continues to flow through
RSET1 but decays. The decaying current produces a falling voltage at RSET1. When the voltage across RSET1 falls to the lower threshold, switch
SW1 is turned on again.
The lower threshold voltage VLT depends on the voltage VCOMP at COMP pin that varies with the input voltage and output load. The equation is
shown as below.
AL8820
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AL8820
Application Information (Cont.)
VLT
 (VCOMP  1.5)  0.6  1.4
mV ,1.5V  VCOMP  5V


16

88mV , 0V  VCOMP  1.5V
NEW PRODUCT
The range of VCOMP is from 0V to 5V.
The upper threshold depends on the lower threshold and the hysteresis value. The hysteresis value is set by external resister RHYS. It is defined as
below.
VHYS  RHYS 100 A
According to the operation principle , the peak to peak current ∆IL and the valley current IL(val) can be obtained by the below equations.
I L ( val ) 
I L 
VLT
RSET 1
VHYS
RSET 1
Where:
∆IL is the peak to peak current of inductor.
IL(val) is the valley current of inductor.
From the Figure 2, the relationship between IL(peak), IL(val), IL(ave) and ∆IL can be obtained as below.
I L ( peak )  I L ( val)  I L
1
I L ( ave)  I L ( val)   I L
2
Where:
IL(peak) is the peak current of inductor.
IL(ave) is the average current of inductor.
As we know the average current IL(ave) depends on the output power, rated input voltage VIN1 of boost converter and total efficiency η. So the
average current IL(ave) can be obtained by the below equation.
I L ( ave) 
VLED  I LED
  VIN1
Where:
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Application Information (Cont.)
VLED is the output voltage of Buck converter.
ILED is the output current of Buck converter.
NEW PRODUCT
Set ratio of ∆IL to IL(peak) as K.
K
I L
I L ( peak )
RSET1 and RHYS can be obtained from above equations:
 ((VCOMP  1.5)  0.6  1.4)  (2  K )   VIN 1 103
1.5V  VCOMP  5V

32  VLED  I LED (1-K)

RSET 1 = 
3
 44  (2  K )   VIN 1 10 , 0V  V
COMP  1.5V

VLED  I LED (1-K)
RHYS =
2 VLED  I LED  K  RSET 1 104
 VIN1  (2  K )
When the value of K, η and VCOMP are provided, the value of resister RSET1 and RHYS can be calculated according to these above equations. In
order to get appropriate efficiency and Electronic Transformer (ET) compatibility, generally K is set between 0.4 and 0.8. Due to the range of
VCOMP is from 0V to 5V, in order to get output voltage regulation, generally VCOMP is set as 3V at rated input voltage.
Step-Up Converter Inductor Selection
Because of the using of the hysteretic control scheme, the switching frequency in a boost configuration can be adjusted in accordance to the value
of the inductor being used. The value of the inductor can be determined by using the following equation:
L2 
[VIN1  ( RSET1  RL  RDSON1 )  I L ( ave) ]  [V INVIN1  VF  ( RL  RSET1 )  I L ( ave) ]
I L [VIN  VF  (2RSET1  2RL  RDSON1 )  I L ( ave) ]  f SW 1
Where:
L2 is the coil inductance.
RL is the coil resistance.
RSET1 is the current sense resistance.
RDSON1 is the switch SW1 resistance.
VIN1 is the rated input voltage of the boost converter.
VIN is the output voltage of boost converter.
VF is the diode forward voltage at the required load current.
fSW1 is the desired switching frequency.
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AL8820
Application Information (Cont.)
NEW PRODUCT
Low switching frequency can decrease the switching loss but need to choose higher inductor values that will result in larger size in order to meet
the saturation current. For example, the relationship between switching frequency and inductor value is shown as below Table 1 in the same
application system. Considering these factors, 500kHz switching frequency is recommended in typical application.
Inductance Value of L2 @ Vac = 12Vac, VIN = 22V, VOUT = 10V,
IOUT = 650mA
Operation Frequency of SW1 at Peak Voltage of Vac
10µH
637kHz
15µH
500kHz
27µH
373kHz
Table 1
LED Current Control
The LED current is controlled by the resistor RSET2 in Figure 1.
Connected between VIN pin and CS2 pin, the nominal average output current in the LED(s) is defined as:
I LED 
100mV
RSET 2
Buck Converter Inductor Selection
The inductance L3 in Buck converter is determined by the following factors: inductor ripple current, switching frequency, V LED/VIN ratio, internal
FET, and component parameter. The inductance L3 is calculated according to the following equation:
L3 
VIN  VLED  ( RSET 2  RDSON 2  RCOIL )  I LED VLED
1


I LED
VIN
f SW 2
Where:
VIN is the output voltage of Boost converter.
VLED is the output voltage of Buck converter.
RSET2 is the current sense resistance.
RDSON2 is the switch resistance (=0.25Ω).
RCOIL is the coil resistance of inductor L3.
∆ILED is the coil peak-peak ripple current, internally set to 0.25 x ILED.
fSW2 is the switching frequency.
The low switching frequency fSW2 is recommended in order to minimize errors due to switching delays which will result in increased ripple and
lower efficiency. Higher switching frequency can choose smaller inductor value that has smaller size in order to meet the saturation current but will
increase the switching loss. For example, the relationship between switching frequency and inductor value is shown as below Table 2 in the same
application system. Considering these factors, about 300kHz switching frequency is recommended in typical application.
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NEW PRODUCT
Application Information (Cont.)
Inductance Value of L3 @ VIN = 22Vac, VOUT = 10V, IOUT = 650mA
Operation Frequency of SW2
33µH
756kHz
47µH
568kHz
68µH
397kHz
100µH
257kHz
Table 2
VIN OVP Protection
The AL8820 has two kinds of Over-voltage (OVP) protection both of which turn off the power switch SW1. When the voltage at the FB pin exceeds
threshold approximately 1.66V, the power switch of step-up stage is turned off. The power switch of boost section can be turned on again once the
voltage at the FB pin drops below 1.46V.
The AL8820 additionally has an internal over voltage protection to protect the AL8820 from excessive input voltage. When the voltage applied at
VIN pin exceeds 39V, it will turn off the power switch SW1. The power switch will turn on once the voltage at VIN drops below 34V.
VCC Regulator
The VCC pin requires a capacitor for stable operation and to store the charge for the large GATE switching currents. Choose a 10V rated low ESR,
X7R or X5R, ceramic capacitor for best performance. A 4.7µF capacitor will be adequate for many applications. Place the capacitor close to the IC
to minimize the trace length between the VCC pin and the exposed pad.
An internal current limit on the VCC output protects against excessive on-chip power dissipation. The VCC pin has set the output to 5V (typ.) to
protect the internal FETs from excessive power dissipation caused by not being fully enhanced. If the VCC pin is used to drive extra circuits beside
the AL8820, the extra loads should be limited to less than 8mA.
Output Capacitor C1 and C2 of Boost
The capacitor C1 is used to hold the bus voltage when the electronic transformer has no output. For most applications, it is recommended to use
an aluminum electrolytic capacitor with greater than 220µF capacitance.
The output capacitor C2 is selected to handle the output ripple noise requirements. For the best performance, it is recommended to use X7R or
better grade ceramic capacitor greater than 1µF capacitance.
Compensation Capacitor C4
In applications powered by electronic transformer, the input voltage can change roughly in one cycle of AC power frequency. A 1µF ceramic
capacitor C4 connected from COMP pin to ground help to stabilize the control loop of the Boost regulator.
Output Capacitor C5 of Buck
Higher LED current ripple will shorten the LED life time and increase heat accumulation of LED. To reduce the LED current ripple, an output
capacitor in parallel with the LED should be added. Lower ripple can be achieved with higher capacitor values. For most applications, a value of
4.7µF is recommended.
Diode Selection
For maximum efficiency and performance, the rectifiers (D5, D6) should be fast low capacitance Schottky diodes with low reverse leakage at
maximum operating voltage and temperature. With its low power dissipation, the Schottky diode outperforms other silicon diodes and increases
overall efficiency.
Over Temperature Protection
A over temperature protection feature is to protect the AL8820 from excessive internal temperature. When the junction temperature exceeds
+160ºC, the internal FETs will be turned off. When junction temperature drops below +120ºC, IC will turn on both FETs and return to normal
operation.
AL8820
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AL8820
Ordering Information
NEW PRODUCT
AL8820 XX - XX
Package
Packing
SP : SO-8EP
13 :13" Tape & Reel
Part Number
Package Code
Package
AL8820SP-13
SP
SO-8EP
13” Tape and Reel
Quantity
Part Number Suffix
2500/Tape & Reel
-13
Marking Information
(Top View)
8
7
6
5
Logo
Part Number
AL8820
YY WW X X E
YY : Year : 08, 09, 10~
WW : Week : 01~52; 52
represents 52 and 53 week
X X : Internal Code
E : SO-8EP
1
AL8820
Document number: DS37369 Rev. 1 - 2
2
3
4
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AL8820
Package Outline Dimensions (All dimensions in mm(inch).)
(1)
Package Type: SO-8EP
3.800(0.150)
4.000(0.157)
2.110(0.083)
2.750(0.108)
3.402(0.134)
NEW PRODUCT
2.710(0.107)
1.270(0.050)
TYP
4.700(0.185)
5.100(0.201)
0.300(0.012)
0.510(0.020)
5.800(0.228)
6.200(0.244)
0.050(0.002)
0.150(0.006)
1.350(0.053)
1.550(0.061)
0°
8°
0.400(0.016)
1.270(0.050)
0.150(0.006)
0.250(0.010)
Note: Eject hole, oriented hole and mold mark is optional.
AL8820
Document number: DS37369 Rev. 1 - 2
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© Diodes Incorporated
AL8820
Suggested Pad Layout
Package Type: SO-8EP
NEW PRODUCT
(1)
Y1
G
Z
X1
Y
E
X
Dimensions
Z
(mm)/(inch)
G
(mm)/(inch)
X
(mm)/(inch)
Y
(mm)/(inch)
X1
(mm)/(inch)
Y1
(mm)/(inch)
E
(mm)/(inch)
Value
6.900/0.272
3.900/0.154
0.650/0.026
1.500/0.059
3.600/0.142
2.700/0.106
1.270/0.050
AL8820
Document number: DS37369 Rev. 1 - 2
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December 2014
© Diodes Incorporated
AL8820
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 © 2014, Diodes Incorporated
www.diodes.com
AL8820
Document number: DS37369 Rev. 1 - 2
15 of 15
www.diodes.com
December 2014
© Diodes Incorporated
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