AP3790

A Product Line of
Diodes Incorporated
AP3790
PUMP EXPRESS
NEW PRODUCT
Description
TM
COMPATIBLE AC/DC PSR CONTROLLER
Pin Assignments
The AP3790 is a high accuracy and low cost switching mode power
supply controller to drive power bipolar transistor for battery
charger/adapter applications. The controller regulates the output
voltage and current in the primary side by piece-wise Pulse
Frequency Modulation (p-PFM) in discontinuous conduction mode
(DCM). The controller uses adaptive source current to optimize
driving current to reduce driving loss. The system operating frequency
reduces linearly from heavy load to light load in each interval of the pPFM, and enters constant current mode when the load current is
equal to the maximum system output current.
(Top View)
CPC
1
8
NC
GND
2
7
OUT
FB
3
6
NC
VCC
4
5
CS
The output voltage of AP3790 can be adjusted based on the patterns
of load current aligned to MTK Pump Express protocol.
The AP3790 provides operating frequency Jitter function from light to
full load range to improve the power supply EMI performance. The
AP3790 also has built-in fixed cable voltage drop compensation (6%
of nominal system output voltage) and adjustable line voltage
compensation.
SO-8
Features

Compatible to MediaTek Pump ExpressTM Protocol

Ultra-Low Standby Power Consumption

Valley-turn On to Reduce Switching Loss and Benefit for EMI

Piece-wise Frequency Reduction to
Efficiency and Suppress Audio Noise

±5% Constant Voltage Accuracy for 5V Output

Audio Noise Suppression

Open Circuit Protection (OCkP)

Current Sense Resistor Short Protection

Over Voltage Protection (OVP)
Applications

Over Temperature Protection (OTP)

Short Circuit Protection (SCP) with Hiccup


Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)
The AP3790 can work individually to achieve Ultra-Low standby
power under 5V output.
The AP3790 is packaged in SO-8.
Adapters/Chargers
Notes:
Enhance
Conversion
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.
AP3790
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AP3790
Typical Applications Circuit
FR1
L1
TR1
D1
C7
R12
R3
D4~D7
C1
+
C2
+
D2
+
C3
R4
+
C4
R1
NEW PRODUCT
R11
R10
L2
5V/1A
D3
C5
Q1
AP3790
6
1
4
8
VCC
OUT
CPC
C6
2
GND
FB
CS
7
R13
3
5
R14
R2
Pin Descriptions
Pin Number
Pin Name
Function
1
CPC
A capacitor is connected to this pin to form a low pass filter for cable voltage drop
compensation, audio noise suppression and detecting the patterns of load current to
change the output voltage and current
2
GND
The ground of the controller
3
FB
4
VCC
5
CS
7
OUT
6, 8
NC
AP3790
Document number: DS37221 Rev. 3 - 2
The CV and CC regulation are realized base on the voltage sampling of this pin
VCC supply pin for the controller. A capacitor with low ESR should be placed as
close as possible to this pin
Current senses pin of IC. The CS pin will turn off the power transistor when the CS
pin voltage reaches turn off threshold.
The OUT pin is used to drive the external power transistor
Not connected
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AP3790
Functional Block Diagram
VCC
4
NEW PRODUCT
OVP
OCkP
SCP
OTP
RCS Short
FB
3
tONS Detection
Regulator
&
Bias
VLOAD
CS
5
2
Pro
tONS
Constant Voltage Control
Cable Compensation
Line
Compensation
UVLO
GND
7
Vally-on
and
Driver
OUT
5V~3.6V_select
Constant Current
Control
Frequency Jitter
tONS
5V~3.6V_select
tONS
Load
Detection
VLOAD
Output Voltage
Selection
5V~3.6V_select
1
CPC
Absolute Maximum Ratings (Note 4)
Symbol
VCC
VCS, VCPC
VFB
Rating
Unit
Supply Voltage
Parameter
-0.3 to 35
V
Voltage on CS, CPC Pin
-0.3 to 7
V
FB Input Voltage
-0.3 to 8
V
Internally Limited
A
Operating Junction Temperature
-40 to +150
°C
TSTG
Storage Temperature
-65 to +150
°C
TLEAD
Lead Temperature (Soldering, 10 sec)
+300
°C
Thermal Resistance (Junction to Ambient)
165
°C/W
ESD (Human Body Model)
4000
V
ESD (Machine Model)
300
V
ISOURCE
TJ
θJA
ESD
Note 4:
Source Current from OUT Pin
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.
AP3790
Document number: DS37221 Rev. 3 - 2
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AP3790
Electrical Characteristics
Symbol
(@VCC = 12V, TA = +25°C, unless otherwise specified.)
Parameters
Conditions
Min
Typ
Max
Unit
STARTUP AND UVLO SECTION
VTH_ST
VOPR(MIN)
Startup Threshold
–
13
15.5
18
V
Minimal Operating Voltage
–
5.2
5.8
6.4
V
0
0.2
0.6
435
500
565
NEW PRODUCT
STANDBY CURRENT SECTION
IST
ICC_QST
Startup Current
Quiescent Current
VCC = VTH_ST-1V before
startup
Static current @ OUT pin
no load
μA
DRIVING OUTPUT SECTION
RDS(ON)
IOUT(MAX)
Sink Resistance
1V @ OUT pin
2
2.4
2.8
Ω
The Maximum Source Current
–
25
32
39
mA
–
691
768
845
μs
37% to 100% full load
5.4
6
6.6
μs
4% to 37% full load
3.2
3.6
4.0
μs
0% to 4% full load
(Note 5)
2.25
2.5
2.75
μs
2
3
4
%
μs
OPERATING FREQUENCY SECTION (5% Load to Full Load)
tOFF(MAX)
tSAMPLE
Maximum Off Time
Sampling Time
FREQUENCY JITTER
△VCS/VCS
VCS Modulation
7% to 100% full load
VCS Modulation Period
–
230
256
282
37% to 100% full load
830
900
970
4% to 37% full load
550
600
650
0% to 4% full load
(Note 5)
320
350
380
–
160
200
240
VCS_H and VCS_M
425
500
575
VCS_L (Note 5)
170
200
230
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3.94
4.0
4.06
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3.75
3.85
3.95
3.61
3.7
3.79
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3.47
3.56
3.65
[email protected]
3.32
3.41
3.5
[email protected]
3.18
3.26
3.34
tMOD
CURRENT SENSE SECTION
VCS_H
VCS_M
Current Sense Threshold
VCS_L
RLINE
Built-in Line Compensation Resistor
tLEB
Leading Edge Blanking
mV
Ω
ns
CONSTANT VOLTAGE SECTION
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Feedback Threshold Voltage
AP3790
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AP3790
Electrical Characteristics
Symbol
(@VCC = 12V, TA = +25°C, unless otherwise specified.) (Cont.)
Parameters
Min
Typ
Max
3.03
3.11
3.19
2.89
2.96
3.03
560
700
840
kΩ
5
6
7
%
VFB=2V (Note 5)
0.47
0.5
0.53
–
(Note 5)
3.61
3.68
3.75
V
VCPC control_L
–
59
–
VCPC control_H
–
100
–
400
500
600
220
300
380
tON_C
50
100
150
tOFF_D
50
100
150
–
180
210
240
ms
[email protected]
Feedback Threshold Voltage
Conditions
–
[email protected]
RFB
NEW PRODUCT
VCABLE/VOUT%
FB Pin Input Resistance
VFB=4V
Cable Compensation [email protected]
–
Unit
V
CONSTANT CURRENT SECTION
tONS/tSW
Maximum Secondary Duty Cycle
DYNAMIC SECTION
VUV_H
Under Voltage of Feedback Pin for VCS_H
OUTPUT VOLTAGE SELECTION SECTION
VCPC_L
Current Control Threshold
VCPC_H
tON_A
tON_B
Current Control Pattern Time
tWDT
Watch Dog Time
(Note 5)
mV
ms
PROTECTION FUNCTION SECTION
VFB(OVP)
Over Voltage Protection
–
7.1
7.5
7.9
V
VCC(OVP)
Over Voltage Protection at VCC Pin
–
27
30
33
V
VOUT(OVP)
Over Voltage Protection at OUT Pin
–
3.4
3.65
3.9
V
VFB(SCP)
Short Circuit Protection
VFB @ Hiccup
1.61
1.7
1.79
V
tSCP
Maximum Time under VFB(SCP)
–
116
128
140
ms
TOTP
Shutdown Temperature
–
+128
+140
+152
°C
THYS
Temperature Hysteresis
–
+36
+40
+44
°C
Note 5: Guaranteed by design.
AP3790
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AP3790
Operation Principle Description
FR1
L1
TR1
D1
C7
R12
R3
D4~D7
C1
+
C2
+
D2
+
C3
R4
+
C4
R1
R11
NEW PRODUCT
R10
L2
5V/1A
D3
C5
Q1
AP3790
6
1
4
8
VCC
OUT
CPC
C6
2
GND
FB
7
R13
3
CS 5
R14
R2
Figure 1. 7.5W Battery Charger
Figure 1 is the typical application circuit of AP3790, which is a conventional Flyback converter with a 3-winding transformer---primary winding (NP),
secondary winding (NS) and auxiliary winding (NAUX). 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 AP3790 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 V OUT 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 VCC 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”
AP3790
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AP3790
Operation Principle Description (Cont.)
IPK
IP
IPKS
tOFFS
NEW PRODUCT
IS
VA
VAUX
tSW
VS
VSEC
tONS
tONP
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 (R2 as shown in Figure 1). 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 fSW.
Constant Voltage Operation
As to constant-voltage (CV) operation mode, the AP3790 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 D1 conduction time is:
V AUX 
N AUX
 Vo  Vd 
NS
(5)
Where the Vd is the diode forward voltage drop.
AP3790
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AP3790
Operation Principle Description (Cont.)
NEW PRODUCT
See equation 5
0V
tSAMPLE
tONS
Figure 3. Auxiliary Voltage Waveform
The voltage detection point is at a constant delay time of the D1 on-time. The constant delay time is changed with the different primary peak
current. The CV loop control function of AP3790 then generates a D1 off-time to regulate the output voltage.
Constant Current Operation
The AP3790 can work in constant-current (CC) mode. Figure 2 shows the secondary current waveforms.
In CC operation mode, the CC control loop of AP3790 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:
tONS
1
I OUT   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 
tONS
1 NP
2 N

 I PK 
  P  I PK
2 NS
tONS  tOFFS 8 N S
(9)
Therefore, AP3790 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 decreases to audio frequency range, about less than 20kHz.
In order to avoid audible noise issue, AP3790 uses 3-segment constant primary peak current control method. At constant voltage mode, the
current sense threshold voltage is multiple segment 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.
AP3790
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AP3790
Operation Principle Description (Cont.)
VCS_REF
VCS_H
High Load
VCS_M
Medium Load
NEW PRODUCT
VCS_L
Light Load
IOMAX
fsw
60kHz
22kHz
12kHz
4kHz
2kHz
4%
37%
100% IOMAX
Figure 4. Multiple Segment Peak Current at CV Mode
It can be seen from Figure 4, with multiple segment peak current control, AP3790 power system can get the good audible noise performance.
Leading Edge Blanking (LEB) Time
When the power switch is turned on, a turn-on spike will occur on the sense-resistor. To avoid false turn off switch, a 500ns leading-edge
blanking is built in. During this blanking time, the current sense comparator is disabled and the external power switch cannot be turned off.
Furthermore, because of multiple segment peak current design, the required maximum on time tONP changes with different load condition.
Therefore the LEB time parameter also changes with different load condition.
Adjustable Line Compensation and Fixed Cable Compensation
The AP3790 power system can adjust line compensation by changing the upper resistor at FB pin. The line compensation capability is
increased by decreasing the resistance of the upper FB resistor.
Cable compensation is fixed in AP3790.
Valley Turn-on
When the off time (tOFF) is lower than 32s, AP3790 power system can work with valley turn on. It can reduce BJT switching on power losses
which is result from the equivalent output capacitance. At the same time, because of valley turn on the switching frequency has the random jitter
feature, which will be benefit for conductive EMI performance. And valley turn on can also reduce the power switch turn on spike current and
then result in the better radiative EMI performance.
Frequency Jitter
Even though the valley turn on function can lead the random frequency jitter feature, an active frequency jitter function is added to AP3790 to
ensure the frequency jitter performance in the whole loading condition. By adjusting the VCS_REF with deviation of 3.0% in a random pulse
sequence, the active frequency jitter can be realized with 256μs repetitive cycles.
AP3790
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AP3790
Operation Principle Description (Cont.)
Output Voltage Selection Section
The output voltage of AP3790 can be adjusted based on the patterns of load current aligned to MTK Pump Express protocol.
The voltage of CPC pin of AP3790 is changed with the load current. AP3790 can detect the load current patterns through CPC pin. The pattern
of decrease output voltage is shown in Figure 5 and the pattern of increase output voltage is shown in Figure 6.
NEW PRODUCT
tON_B
tON_C
tON_A
VCPC_H
VCPC_L
tOFF_D
Figure 5 The Pattern of Decrease Output Voltage
tON_C
tON_B
tON_A
VCPC_H
VCPC_L
tOFF_D
Figure 6 The Pattern of Increase Output Voltage
Just shown as Figure 7, the voltage is changed step by step among 4.8V and 3.6V. When the AP3790 detects one full pattern of decrease
output voltage, the output voltage will decrease 0.2V from the current voltage level. When the output voltage is 3.6V, the pattern of decrease
output voltage is invalid. When the AP3790 detects one full pattern of increase output voltage, the output voltage will increase 0.2V from the
current voltage level. When the output voltage is 5V, the pattern of decrease output voltage is invalid. At any voltage level among 4.8V to 3.6V,
once the WDT function (VCPC<VCPC_L and the time of duration is more than tWDT.) is triggered, the output voltage will return to 5V directly. And At
any voltage level among 4.8V to 3.6V, once any protect function is triggered, the output voltage will return to 5V directly.
WDT
5V
4.8V
4.6V
4.4V
Control Pattern
4.2V
4.0V
WDT
3.8V
3.6V
Figure 7. Voltage State Flow
AP3790
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AP3790
Operation Principle Description (Cont.)
NEW PRODUCT
CCM Protection
The AP3790 is designed to operate in discontinuous conduction mode (DCM) in both CV and CC modes. To avoid operating in continuous
conduction mode (CCM), the AP3790 detects the falling edge of the FB input voltage on each cycle. If a 0V falling edge of FB is not detected,
the AP3790 stops working.
OVP & OCkP
The AP3790 includes output over-voltage protection (OVP) and open circuit protection (OCkP) circuitry. If the voltage at FB pin exceeds 7.5V,
90% above the normal detection voltage, or the 0V falling edge of the FB input can’t be monitored, the AP3790 immediately shuts down and
keeps the internal circuitry enabled to discharge the VCC capacitor to the UVLO turn-off threshold. After that, the device returns to the start
state and a start-up sequence ensues.
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 tSCP, the SCP is triggered. Then the AP3790 enters hiccup mode that the
IC immediately shuts down and then restarts, so that the VCC voltage changes between VTH_ST and UVLO threshold 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 tSCP 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 8 is the AP3790 normal start-up waveform that the voltage of FB pin is above VFB(SCP) during tSCP after VCC gets to the VTH_ST, which
doesn’t enter the SCP mode. As shown in Figure 9, VOUT is short and the voltage of FB pin is lower than VFB(SCP) over than tSCP, the AP3790
triggers the SCP and enters the hiccup mode.
tSCP
VTH_ST
VCC
VFB(SCP)
VFB
5V
VOUT(SCP)
VOUT
Figure 8. Normal Start-up
AP3790
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AP3790
Operation Principle Description (Cont.)
tSCP
VTH_ST
VCC
NEW PRODUCT
VOPR(MIN)
VFB(SCP)
VFB
VOUT
0V
Figure 9. Short Circuit Protection (SCP) and Hiccup Mode
OTP
If the junction temperature reaches the threshold of +140⁰C, AP3790 shuts down immediately. Before VCC voltage decreases to UVLO, if the
junction temperature decreases to +100⁰C, AP3790 can recover to normal operation. If not, the power system enters restart Hiccup mode until
the junction temperature decreases below +100⁰C.
Performance Characteristics
2.5
17.0
16.5
2.0
Startup Current (A)
Startup Voltage (V)
16.0
15.5
15.0
14.5
14.0
1.5
1.0
0.5
13.5
13.0
-40
-20
0
20
40
60
80
100
120
0.0
-40
140
-20
0
20
40
60
80
100
120
140
o
Ambient Temperature ( C)
o
Ambient Temperature ( C)
Figure 10. Startup Voltage vs. Ambient Temperature
AP3790
Document number: DS37221 Rev. 3 - 2
Figure 11. Startup Current vs. Ambient Temperature
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AP3790
Performance Characteristics (Cont.)
700
8
Operating Current (A)
Minimum Operating Voltage (V)
6
5
600
550
500
4
3
-40
450
-20
0
20
40
60
80
100
120
400
-40
140
-20
0
20
40
60
80
100
120
140
o
o
Ambient Temperature ( C)
Ambient Temperature ( C)
Figure 12. Minimum Operating Voltage vs. Ambient Temperature
Figure 13. Operating Current vs. Ambient Temperature
10
4.4
9
4.2
Sample Time (s)
Feedback Voltage (V)
8
4.0
3.8
7
6
5
3.6
4
3.4
-40
-20
0
20
40
60
80
100
120
3
-40
140
-20
0
o
40
60
80
100
120
140
Ambient Temperature ( C)
Figure 14. Feedback Voltage vs. Ambient Temperature
Figure 15. Sample Time vs. Ambient Temperature
1000
30
900
Current Sense Voltage (mV)
32
28
26
24
800
700
600
500
22
20
-40
20
o
Ambient Temperature ( C)
Source Current (mA)
NEW PRODUCT
650
7
-20
0
20
40
60
80
100
120
400
-40
140
AP3790
Document number: DS37221 Rev. 3 - 2
0
20
40
60
80
100
120
140
Ambient Temperature ( C)
Ambient Temperature ( C)
Figure 16. Source Current vs. Ambient Temperature
-20
o
o
Figure 17. Current Sense Voltage vs. Ambient Temperature
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AP3790
Performance Characteristics (Cont.)
1000
Input Resistance of FB Pin (k)
Line Compensation Resistance ()
NEW PRODUCT
350
300
250
200
150
100
-40
-20
0
20
40
60
80
100
120
800
600
400
200
0
-40
140
-20
0
o
20
40
60
80
100
120
140
o
Ambient Temperature ( C)
Ambient Temperature ( C)
Figure 18. Line Compensation Resistance vs. Ambient Temperature
Figure 19. Input Resistance of FB Pin vs. Ambient Temperature
Ordering Information
AP3790 X XX- G1
Product Name
Package
Packing
RoHS/Green
M : SO-8
TR : Tape & Reel
G1 : Green
Package
Temperature
Range
Cable
Compensation
Voltage
SO-8
-40 to +150C
6%
Part Number
AP3790MTR-G1
Marking ID
3790M-G1
Packing
4000/Tape & Reel
Marking Information
(Top View)
: Logo
XXXXM-G1: Marking ID
Third Line: Date Code
Y: Year
WW: Work Week of Molding
A: Assembly House Code
XX: 7th and 8th Digits of Batch No.
AP3790
Document number: DS37221 Rev. 3 - 2
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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 .
AP3790
Document number: DS37221 Rev. 3 - 2
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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
AP3790
Document number: DS37221 Rev. 3 - 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 © 2014, Diodes Incorporated
www.diodes.com
AP3790
Document number: DS37221 Rev. 3 - 2
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October 2014
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