AP3776B

AP3776B
LOW POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER
Description
Pin Assignments
NEW PRODUCT
The AP3776B is a high performance AC/DC power supply controller
for battery charger and adapter applications. It can meet less than
10mW standby power for “Super Star” charger criteria. The device
uses Pulse Frequency Modulation (PFM) method to build
discontinuous conduction mode (DCM) flyback power supplies.
(Top View)
The AP3776B provides accurate constant voltage (CV), constant
current (CC) and outstanding dynamic performance without requiring
an opto-coupler. It also eliminates the need of loop compensation
circuitry while maintaining stability.
The AP3776B achieves excellent regulation and high average
efficiency, less than 10mW no-load power consumption and less than
1s startup time. When AP3776B is used with AP4341, APR343 or
APR3415, good under-shoot performance and higher conversion
efficiency can be achieved.
IS
1
8
FB
EM
2
7
CPC
VCC
3
6
VCS
OUT
4
5
GND
SO-8
Applications

Adapter/Chargers for Shaver, Cell/Cordless Phones, PDAs, MP3
and Other Portable Apparatus

Standby and Auxiliary Power Supplies
The AP3776B is available in SO-8 package.
Features

Primary Side Control for Eliminating Opto-coupler

10mW No-load Input Power

Compensation for External Component Temperature Variations

Flyback Topology in DCM Operation

Random Frequency Adjustment to Reduce System EMI

Semi-valley Turn on for the Higher Efficiency

Built-in Soft Start

Over Voltage Protection

Over Temperature Protection

Short Circuit Protection

AP4341, APR343 or APR3415 Awaking Signal Detection

Audio Noise Reduction

Internal Cable Compensation

SO-8 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.
AP3776B
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AP3776B
Typical Applications Circuit
FR1
TR1
L1
D1
C4
NTC
R8
R13
D2,D4,
D5,D6
C11
+
R24
R26
+
C12
D7
+
R15
OUT VCC
GND
R12
+
C22
C21
IC2
AP4341
VO
NEW PRODUCT
L2
D8
C3
R9
Q1
IC1
AP3776B
R10
D3
VCC
VCS
CPC
R7
R4
OUT
FB
C9
EM
GND
IS
R5
R1
R3
R2
R6
Typical Application of AP3776B with AP4341 (VOUT = 5V/1A or 2A)
L1
T1
C4
NTC
D2,D4,
D5,D6
R8
R13
C11
+
C12
C24
C20
C23
Q2
R21
D8
C3
C22
R9
VDET
R4
OUT
CPC
R20
APR343
DRISR
D3
GND
R10
VCC
AREF
IC2
Q1
IC1
AP3776B
R7
+
R12
L2
VCS
+
R23
D7
+
R15
VCC
FR1
R22
FB
C9
GND
R5
EM
IS
C21
R1
R2
R3
R6
CY1
Typical Application of AP3776B with APR343 (VOUT = 5V/2A or 2.4A)
AP3776B
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AP3776B
Typical Applications Circuit (Cont.)
FR1
L1
T1
C4
NTC
R8
R13
D2,D4,
D5,D6
C11
+
C12
C21
+
C23
D7
+
R15
R12
IC2
APR3415
L2
NEW PRODUCT
C22
+
R21
D8
R9
C3
R23
Q1
IC1
AP3776B
VCS
R10
GND
VDET
VCC
DRISR
AREF
R24
C24
R22
R4
OUT
CPC
R7
GND
DRAIN
C25
D3
VCC
DRAIN
FB
C9
GND
R5
EM
IS
R1
R2
R3
R6
CY1
Typical Application of AP3776B with APR3415 (VOUT = 5V/2A or 2.4A)
Pin Descriptions
Pin Number
Pin Name
1
IS
Primary current sensing
2
EM
Connected to the source of external power MOSFET
3
VCC
Power supply
4
OUT
Driving the base of external power MOSFET
5
GND
Ground
6
VCS
Current sensing voltage
7
CPC
Connecting a capacitor for output cable compensation
8
FB
AP3776B
Document number: DS36737 Rev. 6 - 2
Function
Voltage feedback
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AP3776B
Functional Block Diagram
VCC
3
Auto-restart
Hiccup
Regulator
&
Bias
NEW PRODUCT
UVLO
FB
OVP/OCKP/OTP/Rcs_
short_protection
8
PRO
UVLO
0.05V
COMP
Tonsec
Detector
PFM
TONS
Dynamic
Response
4
VFB
Constant Voltage
Control
EA
Pro
Tdelay
Dyn
R
Q
PFM
Driver
CV_ctrl
CC_ctrl
1
S
Line
Compensation
VCS
6
TONS
Peak Current
Control & LEB
VREF1
VREF2
VREF3
2
OUT
EM
IS
Shutdown
Pre_Shutdown
Constant Current
Control
R Q
Audio noise
Suppression
CC_ctrl
S
5
GND
Tdelay
Cable
Compensation
Light Load
Detection
LL
7
CPC
AP3776B
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AP3776B
Absolute Maximum Ratings (Note 4)
Symbol
Parameter
Rating
Unit
Voltage at VCC to GND
-0.3 to 28
V
–
Voltage at OUT, EM to GND
-0.3 to 23
V
–
Voltage at IS, VCS, CPC to GND
-0.3 to 7
V
–
FB Input
-40 to 10
V
–
Output Current at OUT
Internally limited
A
TJ
Operating Junction Temperature
+150
ºC
-65 to +150
ºC
NEW PRODUCT
VCC
TSTG
Storage Temperature
TLEAD
Lead Temperature (Soldering, 10 Sec)
+300
ºC
Thermal Resistance Junction-to-Ambient
190
ºC/W
Human Body Model
6000
V
Charged Device Model
2500
V
Machine Model
200
V
θJA
Electrostatic Discharge
Capability
ESD
Note 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.
Electrical Characteristics (@TA = +25°C, VCC = 15V, unless otherwise specified.)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
UVLO SECTION
VTH(ST)
Start-up Threshold
–
11
13
14
Minimal Operating Voltage
After turning on
5.3
6.1
7.0
0
0.2
0.6
V
VOPR(Min)
STANDBY CURRENT SECTION
IST
VCC = VTH(ST)-1V,
Start-up Current
Before turning on
ICC(STB)
Standby Mode Quiescent Current
No load at OUT pin,
Standby Mode
60
100
130
ICC(QST)
Normal Mode Quiescent Current
No load at OUT pin,
Normal Mode
160
280
330
µA
CURRENT SENSE SECTION
VCS
Current Sense Threshold (Note 5)
–
425
450
465
mV
tLEB
Leading Edge Blanking (Note 6)
–
300
500
700
ns
FEEDBACK INPUT SECTION
RFB
Input Resistance of FB Pin
VFB = 4V
0.5
0.7
0.9
MΩ
VFB
Feedback Threshold Voltage
–
3.64
3.7
3.76
V
–
0.55
0.7
0.85
µS
LINE COMPENSATION SECTION
gm
Line Compensation Transconductance
(Note 7)
AP3776B
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AP3776B
Electrical Characteristics (Cont. @TA = +25°C, VCC = 15V, unless otherwise specified.)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
–
2
3
4
%
Gate Clamp Voltage
VCC = 20V, CL = 1nF
–
14
16
V
Source Current
–
55
67
80
mA
Sink Current
–
400
500
600
mA
Maximum Off Time
–
15
19
30
ms
Delay Time for Dynamic Function
–
100
140
220
µs
Trigger Voltage for Dynamic Function
–
60
100
120
mV
tonp(MAX)
Maximum On Time of Primary Side
–
16
25
40
µs
VFB(OVP)
Over Voltage Protection
–
6.5
7.5
8.5
V
VFB(SCP)
Short Circuit Protection
–
2.38
2.50
2.62
V
–
Over Temperature Protection (Note 8)
Junction Temperature
+110
+130
+150
ºC
–
Temperature Hysteresis (Note 8)
–
–
+20
–
ºC
CABLE COMPENSATION SECTION
FB _CABLE/VFB
%
Cable Compensation Voltage
DRIVE OUTPUT SECTION
NEW PRODUCT
VGATE_CLAMP
ISOURCE
ISINK
tOFF(MAX)
DYNAMIC FUNCTION SECTION
tD
VTRIGGER
PROTECTION SECTION
Notes:
5. VCS is an equivalent parameter tested in closed loop to ensure the precise constant current.
6. The minimum power switch turn on time.
7. Line compensation voltage on CS pin: Δ VCS  VIN _ DC 
8. Guaranteed by design.
AP3776B
Document number: DS36737 Rev. 6 - 2
N AUX
R 17

 gm  R5
N PRI R 16  R 17
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AP3776B
Performance Characteristics
Start-up Threshold vs. Temperature
Start-up Current vs. Temperature
16.0
0.40
15.5
0.35
Start-up Current (A)
Start-up Threshold (V)
14.5
14.0
13.5
13.0
12.5
12.0
0.30
0.25
0.20
0.15
0.10
11.5
11.0
0.05
10.5
10.0
-40
-20
0
20
40
60
80
100
0.00
-40
120
-20
0
40
60
80
100
120
Temperature ( C)
Minimal Operating Voltage vs. Temperature
Standby Mode Quiescent Current vs. Temperature
120
Standby Mode Quiescent Current (A)
8.0
7.5
Minimal Operating Voltage (V)
20
o
o
Temperature ( C)
7.0
6.5
6.0
5.5
5.0
4.5
4.0
110
100
90
80
70
60
3.5
3.0
-40
-20
0
20
40
60
80
100
50
-40
120
-20
0
20
40
60
80
100
120
o
o
Temperature ( C)
Temperature ( C)
Normal Mode Quiescent Current vs. Temperature
320
Normal Mode Quiescent Current (A)
NEW PRODUCT
15.0
310
300
290
280
270
260
250
240
-40
-20
0
20
40
60
80
100
120
o
Temperature ( C)
AP3776B
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AP3776B
Function Description
Operation Description
1.
Start-up Circuit
Vbulk
Vbulk
R13
R13
R15
R15
C3
D8
R9
C3
NEW PRODUCT
OUT
OUT
VCC
I SOURCE
OUT
OUT
EM
EM
VDD
R9
Q1
Q1
VCC
D8
IS
IS
(a)
( b)
Figure 1. The AP3776B Start-up Circuit
Figure1 (a) shows the Startup Phase
•
Before VCC reaches VTH(ST), VDD is zero and EM to IS pin is open.
•
C3 is charged by ISOURCE.
•
The resistance of R13 and R15 should be big enough to reduce the power dissipation.
Figure1 (b) shows the Normal Operation Phase
•
When VCC reaches VTH(ST), VDD is high and EM to IS pin is short.
•
•
The voltage of EM pin is lower than 1V so that the four diodes in chip are open.
C3 is supplied by Aux. winding of transformer.
2. Operation Mode
The typical application circuit of AP3776B is a conventional Flyback converter with a 3-winding transformer---primary winding (NP), secondary
winding (NS) and auxiliary winding (NAUX), as shown in the figure of Typical Application of AP3776B with AP4341. The auxiliary winding is used
for providing VCC supply voltage for IC and sensing the output voltage feedback signal to FB pin.
Figure 2 shows the typical waveforms which demonstrate the basic operating principle of AP3776B application. And the parameters are defined
as following.
•
IP---The primary side current
•
IS ---The secondary side current
•
IPK---Peak value of primary side current
•
IPKS---Peak value of secondary side current
•
VSEC---The transient voltage at secondary winding
•
VS---The stable voltage at secondary winding when rectification diode is in conducting status, which equals the sum of output voltage
•
•
VOUT and the forward voltage drop of diode
VAUX---The transient voltage at auxiliary winding
VA--- The stable voltage at auxiliary winding when rectification diode is in conducting status, which equals the sum of voltage V CC and
•
•
•
•
•
the forward voltage drop of auxiliary diode
tSW ---The period of switching frequency
tONP ---The conduction time when primary side switch is “ON”
tONS ---The conduction time when secondary side diode is “ON”
tOFF ---The dead time when neither primary side switch nor secondary side diode is “ON”
tOFFS --- The time when secondary side diode is “OFF”
AP3776B
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AP3776B
Function Description (Cont.)
IPK
IP
IPKS
tOFFS
NEW PRODUCT
IS
VA
VAUX
VS
VSEC
tONP
tONS
tOFF
Figure 2. The Operation Waveform of Flyback PSR System
For primary-side regulation, the primary current ip(t) is sensed by a current sense resistor RCS (R5, R6 as shown in Typical Application of
AP3776B).The current rises up linearly at a rate of:
dip (t ) Vin (t )

dt
LM
(1)
As illustrated in Figure 2, when the current ip(t) rises up to IPK, the switch Q1 turns off. The constant peak current is given by:
I PK 
VCS
RCS
(2)
The energy stored in the magnetizing inductance LM each cycle is therefore:
Eg 
1
2
 LM  I PK
2
(3)
So the power transferring from the input to the output is given by:
P
1
2
 LM  I PK  f SW
2
(4)
Where, the fSW is the switching frequency. When the peak current IPK is constant, the output power depends on the switching frequency f SW.
The maximum frequency for AP3776B system is about 84kHz.
Constant Voltage Operation
As to constant-voltage (CV) operation mode, the AP3776B detects the auxiliary winding voltage at FB pin to regulate the output voltage. The
auxiliary winding voltage is coupled with secondary side winding voltage, so the auxiliary winding voltage at secondary rectification diode D1
conduction time is:
V AUX 
N AUX
 VOUT  Vd 
NS
(5)
Where the Vd is the diode forward voltage drop.
AP3776B
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AP3776B
Function Description (Cont.)
NEW PRODUCT
0V
Tsample
Tons
Figure 3. Auxiliary Voltage Waveform
The voltage detection point is at 2/3 of the D1 on-time. The voltage detection point is changed with the different primary peak current. The CV
loop control function of AP3776B then generates a D1 off-time to regulate the output voltage.
Constant Current Operation
The AP3776B can work in constant-current (CC) mode. Figure 2 shows the secondary current waveforms.
In CC operation mode, the CC control loop of AP3776B will keep a fixed proportion between D1 on-time Tons and D1 off-time Toffs. The fixed
proportion is
Tons 4

Toffs 4
(6)
The relationship between the output current and secondary peak current I PKS is given by:
I OUT 
1
Tons
 I PKS 
2
Tons  Toffs
(7)
As to tight coupled primary and secondary winding, the secondary peak current is
I PKS 
NP
 I PK
NS
(8)
Thus the output constant-current is given by:
I OUT 
1 NP
Tons
2 N

 I PK 
  P  I PK
2 NS
Tons  Toffs 8 N S
(9)
Therefore, AP3776B can realize CC mode operation by constant primary peak current and fixed diode conduction duty cycle.
Multiple Segment Constant Peak Current
As to the original PFM PSR system, the switching frequency decreases with output current decreasing, which will encounter audible noise issue
since switching frequency decrease to audio frequency range, about less than 20kHz.
In order to avoid audible noise issue, AP3776B uses 3-segment constant primary peak current control method. At constant voltage mode, the
current sense threshold voltage is multiple segments with different loading, as shown in Figure 4, which are VCS_H for high load, VCS_M for
medium load and VCS_L for light load. At constant current mode, the peak current is still V CS_H. As to no load and ultra light load condition (LL
mode), the current reference is also VCS_L. But the LL mode operating is different, which will be described in next section.
It can be seen from the following Figure 4 that with multiple segment peak current control, AP3776B power system can keep switching
frequency above 24kHz from light load to heavy load and guarantee the audible noise free performance.
AP3776B
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AP3776B
Function Description (Cont.)
VCSREF
VCS_H
High-load
VCS_M
Medium-load
NEW PRODUCT
VCS_L
LL mode
Light-load
fsw
Iomax
60kHz
24kHz
Iomax
Figure 4. Multiple Segment Peak Current at CV Mode
3.
The LL Mode Operating (Typical Application with APR343)
At no load and light load, the AP3776B works in Low Light mode (LL mode) and the output voltage is detected by APR343. In order to achieve
ultra low standby power in LL mode, the static current (ICC_NL) of the AP3776B is reduced from 280μA to 100μA.
• The conditions of exiting LL mode---VCPC>65mV or tOFF<tDELAY+30μs
• The conditions of entering LL mode---VCPC<33mV and tOFF≥tDELAY+30μs
In LL mode, when the APR343 detects the output voltage is lower than its trigger voltage, the APR343 VDET pin emits a periodical pulse
current. This pulse current will generate a pulse voltage on feedback winding through the transformer coupling. When the AP3776B detects this
VPULSE (>100mV is valid), primary switch immediately turns on to provide one energy pulse to supply output terminal and primary VCC. To
achieve low standby power, the lower switching frequency is necessary. But if the off time is too long, the VCC voltage will reduce to very low
level. To avoid VCC being lower than VOPR(Min), a minimum switching frequency is specified by the APR343 (tDIS). If VOUT does not fall below
trigger voltage during tDIS, APR343 VDET pin will emit the periodical pulse current and let the primary switch turn on.
4.
Leading Edge Blanking
When the power switch is turned on, a turn-on spike will occur on the sense-resistor. To avoid false-termination of the switching pulse, a 500ns
leading-edge blanking (from power MOSFET on) is built in. During this blanking period, the current sense comparator is disabled and the gate
driver can’t be switched off.
5.
Adjustable Line Compensation
Since there is a constant delay time from the CS pin voltage reaching the given VCS reference to the power MOSFET turning off, the real
primary peak current value always has a gap with the ideal value. The gap value changes with different input line voltage, which is caused by
different current rising slope, results in different system constant current value.
In order to eliminate the constant current deviation due to line voltage, the adjustable line compensation is introduced to AP3776B design. By
sensing the negative voltage of FB pin which is linear to the line voltage, a current (ILINE) proportional to line voltage flows out from the CS pin to
the resistor RLINE, and create an adjustable compensation voltage to clear up the primary current gap, so that the excellent line regulation of
output current will be achieved.
VCS _ LINE  RLINE  0.4 
N
RFB 2
1

 aux  Vindc
700k RFB1  RFB 2 N p
AP3776B
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AP3776B
Function Description (Cont.)
VAUX
Tonp
K=0.4
OUT
RFB1
S1 FB
NEW PRODUCT
RFB2
RLINE
ILINE
700k
RCS
VCS
Figure 5. Adjustable Line Compensation Circuit
6.
Fixed Cable Compensation
As we know, CPC voltage reflects the power system loading percentage. By introducing a rising voltage, which is linear to CPC voltage, to the
FB reference voltage, AP3776B can realize the fixed cable compensation to match the voltage drop at output cable.
Protection
1. FB Over Voltage Protection (OVP)
When the voltage of FB pin exceeds VFB(OVP) at Tons period, AP3776B immediately shuts down for tOFF(MAX) and then detects the FB
voltage again to see if VFB(OVP) condition is removed. The VCC voltage will drop during the tOFF(MAX). When VCC is still higher than VOPR(Min)
after tOFF(MAX), and VFB(OVP) condition is removed, the IC will enter normal operating mode; but if VFB(OVP) condition is not removed,
AP3776B will remain shut down and wait for another tOFF(MAX). When VCC drops to VOPR(Min) during the tOFF(MAX), AP3776B will enter the
restart mode, and VCC voltage changes between VTH(ST) and VOPR(Min) until VFB(OVP) condition is removed.
2.
Open Circuit Protection ( OCKP)
If the down resistance of FB pin short or up resistance open, there will be no voltage on FB pin, so the sample signal can’t be monitored, and
the OCKP protection will be triggered. The protection operating process is the same as over voltage protection process.
3.
Short Circuit Protection (SCP)
Short Circuit Protection (SCP) detection principle is similar to the normal output voltage feedback detection by sensing FB pin voltage. When
the detected FB pin voltage is below VFB(SCP) for a duration of about tOFF(MAX), the SCP is triggered. Then the AP3776B enters hiccup mode
that the IC immediately shuts down and then restarts, so that the VCC voltage changes between VTH(ST) and VOPR(Min) until VFB(SCP)
condition is removed.
As to the normal system startup, the time duration of FB pin voltage below VFB(SCP) should be less than tOFF(MAX) to avoid entering SCP
mode. But for the output short condition or the output voltage below a certain level, the SCP mode should happen.
Figure 6 shows the AP3776B normal start-up waveform. If the voltage of FB pin reaches above VFB(SCP) during tOFF(MAX) after VCC gets to the
VTH(ST), the IC doesn’t enter the SCP mode. Figure 7 shows that VOUT is short and the voltage of FB pin is lower than VFB(SCP) during
tOFF(MAX), then the AP3776B triggers the SCP and enters the hiccup mode.
AP3776B
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AP3776B
Function Description (Cont.)
tOFF(MAX)
VTH(ST)
VCC
VFB(SCP)
NEW PRODUCT
VFB
5V
VOUT(SCP)
VOUT
Figure 6. Normal Start-up
tOFF(MAX)
VTH(ST)
VCC
VOPR(MIN)
VFB(SCP)
VFB
VOUT
0V
Figure 7. Short Circuit Protection (SCP) and Hiccup Mode
4.
RCS Short Protection
When the primary side current sense resistance is shorted, the primary side current rapidly increases, and the transformer saturates, which leads
to some components’ damage. The AP3776B draws in the RCS short protection to avoid the damage. If the voltage of CS pin is smaller than 0.15V
at the primary side maximum on time tonp(MAX), the RCS short protection is triggered, and the AP3776B immediately shuts down, and then
restarts.
5.
Over Temperature Protection (OTP)
When the IC junction temperature exceeds the thermal shutdown temperature threshold of +130ºC, the device shuts down immediately. Retry is
allowed if junction temperature reduces by hysteresis temperature value.
AP3776B
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December 2015
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AP3776B
Ordering Information
AP3776B X XX - XX
NEW PRODUCT
Product Name
Package
Temperature
Range
SO-8
-40 to +85°C
Package
Packing
M : SO-8
TR : Tape & Reel
Part Number
AP3776BMTR-G1
RoHS/Green
Marking ID
3776BM-G1
G1 : Green
Packing
4000/Tape & Reel
Marking Information
(Top View)
3776BM
-G1
YWWAXX
AP3776B
Document number: DS36737 Rev. 6 - 2
3776BM-G1: Marking ID
Third Line: Date Code
Y: Year
WW: Work Week of Molding
A: Assembly House Code
th
th
XX: 7 and 8 Digits of Batch No.
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AP3776B
Package Outline Dimensions (All dimensions in mm(inch).)
(1)
Package Type: SO-8
4.700(0.185)
5.100(0. 201)
7°
~ 9°
0.320(0. 013)
TYP
1.350(0. 053)
1.750(0. 069)
NEW PRODUCT
8°
8°
~ 9°
7°
0.600(0. 024)
0.725(0. 029)
D
5.800(0. 228)
6.200(0. 244)
1.270(0. 050)
TYP
D
20:1
0.300(0. 012)
R0.150(0.006)
0.100(0. 004)
1.000(0. 039)
TYP
3.800(0. 150)
Option 1
4.000(0. 157)
0.300(0. 012)
0.150(0. 006)
0.250(0. 010)
Option 1
0°
8°
1°
7°
0.510(0. 020)
R0.150(0.006)
0.450(0. 017)
0.820(0. 032)
Option 2
0.350(0. 014)
TYP
Note: Eject hole , oriented hole and mold mark is optional .
AP3776B
Document number: DS36737 Rev. 6 - 2
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AP3776B
Suggested Pad Layout
(1)
Package Type: SO-8
NEW PRODUCT
Grid
placement
courtyard
G
Z
Y
E
X
Dimensions
Z
(mm)/(inch)
G
(mm)/(inch)
X
(mm)/(inch)
Y
(mm)/(inch)
E
(mm)/(inch)
Value
6.900/0.272
3.900/0.154
0.650/0.026
1.500/0.059
1.270/0.050
AP3776B
Document number: DS36737 Rev. 6 - 2
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AP3776B
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 © 2015, Diodes Incorporated
www.diodes.com
AP3776B
Document number: DS36737 Rev. 6 - 2
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December 2015
© Diodes Incorporated
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