AP3585A B C

A Product Line of
Diodes Incorporated
AP3585A/B/C
SINGLE PHASE SYNCHRONOUS BUCK PWM CONTROLLER
Description
Pin Assignments
NEW PRODUCT
The AP3585A/B/C is a compact synchronous-rectified buck controller
specifically designed to operate from 4.5V to 13.2V supply voltage
and deliver high-quality output voltage as low as 0.8V (AP3585A) or
0.6V (AP3585B/C). This SO-8EP device operates at fixed
300kHz/200kHz frequency and provides an optimal level of
integration to reduce size and cost of the power supply.
(Top View)
This controller integrates internal MOSFET drivers that support
12V+12V bootstrapped voltage for high- efficiency power conversion.
The bootstrap diode is built-in to simplify the circuit design and
minimize external part count.
BOOT
1
8
PHASE
UGATE
2
7
COMP/EN
GND
3
6
FB
LGATE/OCSET
4
5
VCC
8
PHASE
7
COMP/EN
6
FB
5
VCC
This controller provides single feedback loop, voltage-mode control
with fast transient response. The error amplifier features a 10MHz
gain-bandwidth product and 6V/μs slew rate which enables high
converter bandwidth for fast transient performance.
(SO-8/ M Package)
(Top View)
Other features include internal soft-start, under voltage protection,
over current protection and shutdown function. With afore mentioned
functions, this part provides customers a compact, high efficiency,
well-protected and cost-effective solution.
BOOT
1
UGATE
2
GND
3
LGATE/OCSET
4
The AP3585A/B/C is available in SO-8 and SO-8EP packages.
Features














Supply Voltage: 4.5V to 13.2V
VIN Input Range: 3.3V to 12V
0.8V/0.6V to 80% of VIN Output Range
Internal Reference: 0.8V/0.6V
Simple Single-loop Control
Voltage-mode PWM Control
Duty Cycle: 0% to 80%
Fast Transient Response
10MHz High-bandwidth Error Amplifier with 6V/μs Slew Rate
Fixed Oscillator Frequency: 300kHz/200kHz
Lossless, Programmable Over Current Protection
(Uses Lower MOSFET RDS(ON))
Start-up into Pre-biased Load
Built-in Thermal Shutdown
Built-in Soft-start
Over Current Protection
Over Voltage Protection
Under Voltage Protection
Integrated Boot Diode
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Notes:
Exposed
Pad
9
(SO-8EP/ MP Package)
Applications



Subsystem Power Supplies
PCI, AGP, Graphics Cards, Digital TV
SSTL-2 and DDR/2/3 SDRAM Bus Termination Supply
Cable Modems, Set Top Boxes, and DSL Modems
Industrial Power Supplies and General Purpose Supplies
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.
AP3585A/B/C
Document number: DS36819 Rev. 1 - 2
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AP3585A/B/C
NEW PRODUCT
Typical Applications Circuit
Pin Descriptions
Pin Number
Pin Name
SO-8
SO-8EP
1
1
BOOT
2
2
UGATE
3
3
GND
4
4
LGATE/OCSET
5
5
VCC
6
6
FB
7
7
COMP/EN
8
8
PHASE
–
9
Exposed Pad
AP3585A/B/C
Document number: DS36819 Rev. 1 - 2
Function
Bootstrap pin. Connect a bootstrap capacitor from this pin to PHASE for
creating a BOOT voltage suitable to drive a standard N-Channel
MOSFET.
Upper-gate drive pin. Connect this pin to the upper MOSFET gate
providing the gate drive. This pin is monitored by the adaptive shootthrough protection circuitry to determine when the upper MOSFET has
turned off.
Ground for the IC. All voltage levels are measured with respect to this pin.
Connect this pin directly to the low side MOSFET source and ground
plane with the lowest impedance. The exposed pad must be soldered to a
large PCB and connected to GND for maximum power dissipation.
Low-side Gate Driver Output and Over-Current Setting Input. This pin is
the gate driver for low-side MOSFET. It is also used to set the maximum
inductor current. Refer to the section in “Function Description” for detail.
Bias supply pin. Provides a 4.5V to 13.2V bias supply for the chip from this
pin. The pin should be bypassed with a capacitor to GND.
Feedback pin. This pin is the inverting input of the internal error amplifier.
Use FB pin, in combination with the COMP pin, to compensate the voltage
control feedback loop of the converter. A resistor divider from output to
GND is used to set the output voltage.
Compensation and disable pin. This pin is the output of the Error Amplifier.
Pull COMP pin low will shut down the IC.
This pin connects to the source of the upper MOSFET and the drain of the
lower MOSFET. This pin is also monitored by the adaptive shoot-through
protection circuitry to determine when the upper MOSFET has turned off.
Exposed Pad as ground pin.
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AP3585A/B/C
NEW PRODUCT
Functional Block Diagram
AP3585A/B/C
Document number: DS36819 Rev. 1 - 2
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AP3585A/B/C
Absolute Maximum Ratings (Note 4)
Symbol
Parameter
VCC
VBOOT-PHASE
Rating
Unit
Supply Input Voltage
-0.3 to 15
V
BOOT to PHASE Voltage
-0.3 to 15
V
-0.3 to VBOOTPHASE+0.3
-5 to VBOOTPHASE+5
DC
UGATE to PHASE Voltage
VUGATE
NEW PRODUCT
<200ns
VPHASE
PHASE to GND Voltage
VLGATE
LGATE to GND Voltage
DC
-0.3 to 15
<200ns
-5 to 30
DC
-0.3 to
VCC+0.3
<200ns
-5 to VCC+5
Other Pin Voltage
Notes:
-0.3 to 6
V
V
V
V
SO-8
0.87
SO-8EP
1.43
SO-8
115
SO-8EP
70
SO-8
22
SO-8EP
22
PD
Power Dissipation
W
θJA
Thermal Resistance (Junction to Ambient)
θJC
Thermal Resistance (Junction to Case)
TJ
Junction Temperature
-40 to +150
TSTG
Storage Temperature
-65 to +150
ºC
TLEAD
Lead Temperature (Soldering, 10 sec)
+260
ºC
–
ESD (Human Body Model) (Note 5)
2000
V
–
ESD (Machine Model) (Note 5)
200
V
ºC/W
ºC/W
ºC
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. Devices are ESD sensitive. Handling precaution is recommended.
Recommended Operating Conditions
Symbol
VCC
TA
Parameter
Min
Max
Unit
Supply Input Voltage
4.5
13.2
V
Operating Ambient Temperature
-40
+85
C
Electrical Characteristics (VCC = 12V, TA = +25oC, unless otherwise specified.)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
SUPPLY INPUT
Supply Current
UGATE and LGATE Pins
Open; Switching
–
5
–
mA
ICC_Q
Quiescent Supply Current
VFB = VREF+0.1V,
No Switching
–
4
–
mA
VIN
Power Input Voltage
–
3.0
–
13.2
V
ICC
AP3585A/B/C
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AP3585A/B/C
Electrical Characteristics (Cont. VCC = 12V, TA = +25oC, unless otherwise specified.)
Symbol
POWER ON RESET
VPOR
VPOR_HYS
NEW PRODUCT
ERROR AMPLIFIER
GDC_OL
Parameter
Conditions
Min
Typ
Max
Unit
VCC Rising Threshold
VCC Rising
4.0
4.2
4.4
V
VCC Threshold Hysteresis
–
–
500
–
mV
Open Loop DC Gain
–
55
70
–
dB
GBW
Gain-bandwidth Product
–
–
10
–
MHz
SR
Slew Rate
–
3
6
–
V/µs
–
Transconductance
–
–
800
1100
µA/V
–
Output Source Current
VFB < VREF
80
120
–
µA
–
Output Sink Current
VFB > VREF
80
120
–
µA
–
-1.0
–
A
–
1.5
–
A
50mA Source Current
–
2
4
Ω
PWM CONTROLLER GATE DRIVERS
IUG_SRC
Upper Gate Source Current
IUG_SNK
Upper Gate Sink Current
RUGATE
Upper Gate Sink
Resistance
VBOOT-VPHASE = 12V,
VBOOT-VUGATE = 6V
VBOOT-VPHASE = 12V,
VBOOT-VUGATE = 6V
ILG_SRC
Lower Gate Source Current
VCC-VLGATE = 6V
–
-1
–
A
ILG_SNK
Lower Gate Sink Current
VLGATE = 6V
–
1.5
–
A
RLGATE
Lower Gate Sink
Resistance
50mA Source Current
–
1
2
Ω
–
30
–
ns
–
30
–
ns
PHASE Falling to LGATE
Rising Delay
LGATE Falling to UGATE
Rising Delay
–
Minimum Duty Cycle
VPHASE < 1.2V to VLGATE >
1.2V
VLGATE < 1.2V to
(VUGATE-VPHASE) > 1.2V
–
–
0
–
%
–
Maximum Duty Cycle
–
75
82
89
%
AP3585A/B
270
300
330
AP3585C
180
200
220
–
1.4
–
VP-P
AP3585A
0.788
0.8
0.812
V
AP3585B/C
0.591
0.6
0.609
V
–
10
50
nA
0.3
0.4
0.5
V
–
–
OSCILLATOR
fOSC
∆VOSC
Oscillator Frequency
Ramp Amplitude
–
kHz
REFERENCE VOLTAGE
VFB
Feedback Voltage
IFB
Feedback Bias Current
VFB = 5V
VFB_UVP
Under Voltage Protection
–
VFB_OVP
Over Voltage Protection
IOCSET
OC Current Source
Built-in Maximum OCP
Voltage
PROTECTION
VOCP_MAX
tSS
Soft-start Interval
AP3585A
–
1.1
–
AP3585B/C
–
0.8
–
–
9
10
11
µA
–
–
0.375
–
V
AP3585A
–
2
–
AP3585B
–
1.5
–
AP3585C
–
2.4
–
V
ms
VCOMP/EN
Enable Threshold
–
0.25
0.30
0.35
V
TOTSD
Thermal Shutdown
Thermal Shutdown
Hysteresis
–
–
+160
–
ºC
–
–
+20
–
ºC
THYS
AP3585A/B/C
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AP3585A/B/C
Performance Characteristics
Line Regulation
Load Regulation
4
3
VOUT=1.5V
Output Voltage Variation (%)
NEW PRODUCT
Output Voltage Variation (%)
1.0
0.5
0.0
-0.5
VOUT=1.5V
2
1
0
-1
-2
-3
5
6
7
8
9
10
11
12
-4
13
0
2
4
6
10
12
14
16
18
20
Output Current (A)
Switching Frequency vs. Temperature
Switching Frequency vs. Input Voltage
320
320
315
315
310
AP3585A/B
305
300
295
290
285
310
AP3585A/B
305
300
295
290
285
280
280
275
275
270
270
-40
-20
0
20
40
60
80
100
120
4
140
5
6
7
8
9
10
11
12
13
14
Input Voltage (V)
o
Temperature ( C)
Reference Voltage vs. Temperature
Reference Voltage vs. Input Voltage
0.816
0.810
0.808
0.814
0.806
AP3585A
0.812
Reference Voltage (V)
Reference Voltage (V)
8
Input Voltage (V)
Switching Frequency (kHz)
Switching Frequency (kHz)
-1.0
0.810
0.808
0.806
0.804
0.804
0.802
0.800
AP3585A
0.798
0.796
0.794
0.802
0.792
0.800
0.790
-40
-20
0
20
40
60
80
100
120
Temperature ( C)
AP3585A/B/C
Document number: DS36819 Rev. 1 - 2
4
5
6
7
8
9
10
11
12
13
14
Input Voltage (V)
o
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AP3585A/B/C
Performance Characteristics (Cont.)
Power-on Waveform (VIN = 12V, VOUT = 1.5V, IOUT = 0A)
Enable-on Waveform (VIN = 12V, VOUT = 1.5V, IOUT = 0A)
NEW PRODUCT
VIN
10V/div
VOUT
1V/div
VOUT
1V/div
VCOMP
0.5V/div
VCOMP
0.5V/div
VUGATE
20V/div
VLGATE
5V/div
VLGATE
10V/div
Time 4ms/div
Time 4ms/div
Load Transient Response
(VIN = 12V, VOUT = 1.5V, IOUT = 0A to 10A)
Load Transient Response
(VIN = 12V, VOUT = 1.5V, IOUT = 0A to 20A)
VOUT_AC
50mV/div
VOUT_AC
50mV/div
IOUT
5A/div
IOUT
10A/div
Time 400µs/div
Time 400µs/div
Over Current Protection (VIN = 12V, VOUT = 1.5V)
Under Voltage Protection (VIN = 12V, VOUT = 1.5V)
VOUT
1V/div
VOUT
1V/div
VPHASE
10V/div
VUGATE
20V/div
VCOMP
1V/div
VLGATE
10V/div
IOUT
50A/div
VCOMP
1V/div
Time 20ms/div
Time 10ms/div
AP3585A/B/C
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AP3585A/B/C
Performance Characteristics (Cont.)
Over Voltage Protection (VIN = 12V, VOUT = 1.5V)
VOUT
1V/div
NEW PRODUCT
VUGATE
20V/div
VLGATE
10V/div
VCOMP
1V/div
Time 20ms/div
AP3585A/B/C
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AP3585A/B/C
Functional Descriptions
The AP3585A/B/C is a voltage-mode single phase synchronous buck controller with embedded MOSFET drivers. This part provides complete
protection functions such as over voltage protection, under voltage protection and over current protection. Inductor current information is sensed
by RDS(ON) of the low side MOSFET. The over current protection threshold can be simply programmed by a resistor.
Power on Reset and Chip Enable
A power on reset (POR) circuitry continuously monitors the supply voltage at VCC pin. Once the rising POR threshold is exceeded, the
NEW PRODUCT
AP3585A/B/C sets itself to active state and is ready to accept chip enable command. The rising POR threshold is typically 4.2V at VCC rising.
The COMP/EN is a multifunctional pin: control loop compensation and chip enable as shown in Figure 1. An Enable Comparator monitors the
COMP/EN pin voltage for chip enable. A signal level transistor is adequate to pull this pin down to ground and shut down AP3585A/B/C. A 120µA
current source charges the external compensation network with 0.45V ceiling when this pin is released. If the voltage at COMP/EN pin exceeds
0.3V, the AP3585A/B/C initiates its soft start cycle.
The 120µA current source keeps charging the COMP pin to its ceiling until the feedback loop boosts the COMP pin higher than 0.45V according to
the feedback signal. The current source is cut off when VCOMP is higher than 0.45V during normal operation.
0.45V
120A
+
ERROR
AMPLIFIER
0.3V
+
-
ENABLE
ENABLE
COMP
DISABLE
ENABLE
Figure 1. Chip Enable Function
Soft Start
A built-in Soft Start is used to prevent surge current from power supply input VIN during turn-on (Referring to the Functional Block Diagram). The
error amplifier is a three-input device. Reference voltage VREF or the internal soft start voltage SS whichever is smaller dominates the behavior of
the non-inverting inputs of the error amplifier. SS internally ramps up to 0.8V in 2ms for AP3585A (to 0.6V in 1.5ms for AP3585B and 0.6V in
2.4ms for AP3585C) after the soft start cycle is initiated. The ramp is created digitally, so there will be 100 small discrete steps. Accordingly, the
output voltage will follow the SS signal and ramp up smoothly to its target level.
The SS signal keeps ramping up after it exceeds the internal 0.8V for AP3585A (0.6V for AP3585B/C) reference voltage. However, the internal
0.8V for AP3585A (0.6V for AP3585B/C) reference voltage takes over the behavior of error amplifier after SS > VREF. When the SS signal climbs
to its ceiling voltage (4.2V), AP3585A/B/C claims the end of soft start cycle and enables the under voltage protection of the output voltage.
Figure 2 shows a typical start up interval for AP3585A/B/C where the COMP/EN pin has been released from a grounded (system shutdown) state.
The internal 120µA current source starts charge the compensation network after the COMP/EN pin is released from ground at T1. The COMP/EN
exceeds 0.3V and enables the AP3585A/B/C at T2. The COMP/EN continues ramping up the stays at 0.45V before the SS starts ramping at T3.
The output voltage follows the internal SS and ramps up to its final level during T3 and T4. At T4, the reference voltage VREF takes over the
behavior of the error amplifier as the internal SS crosses VREF. The internal SS keeps ramping up and stays at 4.2V at T5, where AP3585A/B/C
asserts the end of soft start cycle.
VIN 10V/Div
VOUT 0.5V/Div
COMP 0.5V/Div
LGATE 10V/Div
1ms/Div
Figure 2. Soft Start Behavior of AP3585A/B/C
AP3585A/B/C
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AP3585A/B/C
Functional Descriptions (Cont.)
Power Input Detection
The AP3585A/B/C detects PHASE voltage for the present of power input VIN when UGATE turns on the first time. If the PHASE voltage does not
exceed 2.0V when UGATE turns on, AP3585A/B/C asserts that VIN is not ready and stops the soft start cycle. However, the internal SS continues
ramping up to VDD. Another soft start is initiated after SS ramps up to VDD. The hiccup period is about 1ms. Figure 3 shows the start-up waveform
where VIN does not present initially.
NEW PRODUCT
VIN 10V/Div
VOUT 0.5V/Div
I L 10A/Div
LGATE 10V/Div
1ms/Div
Figure 3. Soft Start Where VIN Does Not Present Initially
Over Current Protection (OCP)
A resistor ROCSET connected from LGATE pin sets the threshold. An internal current source IOCSET (10µA typically), flowing through ROCSET
determines the OCP trigger point, which can be calculated using the following equation:
I LIMIT 
I OCSET  R OCSET
R DS(ON) of the low side MOSFET
If ROCSET is absent or larger than 40kΩ, AP3585A/B/C will work in build-in Maximum OCP Mode. Then the current limit will be:
I LIMIT  375mV / RDS (ON )
Because the RDS(ON) of MOSFET increases with temperature, it is necessary to take this thermal effect into consideration in calculating OCP point.
When OCP is triggered, both UGATE and LGATE will go low to stop the energy transfer to the load. Controller will try to restart in a hiccupped
way. Figure 4 shows the hiccupped over current protection.
Figure 4. Hiccupped Over Current Protection
Over Voltage Protection (OVP)
The feedback voltage is continuously monitored for over voltage protection. When OVP is triggered, LGATE will go high and UGATE will go low to
discharge the output capacitor.
The AP3585A/B/C provides full-time over voltage protection whenever soft start completes or not. The typical OVP threshold is 137.5% of the
internal reference voltage VREF. AP3585A/B/C provides non-latched OVP. The controller will return to normal operation if over voltage condition is
removed.
Under Voltage Protection (UVP)
The feedback voltage is also monitored for under voltage protection. The under voltage protection has 15µs triggered delay. When UVP is
triggered, both UGATE and LGATE will go low. Unlike OCP, UVP is not a latched protection; controller will always try to restart in a hiccupped way.
AP3585A/B/C
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Functional Descriptions (Cont.)
Thermal Shutdown
If the junction temperature of the device reaches the thermal shutdown limit of +160°C, the PWM and the oscillator are turned off and UGATE and
LGATE are driven low, turning off both MOSFETs. When the junction cools to the required level (+140°C nominal), the PWM initiates soft start as
during a normal power-up cycle.
NEW PRODUCT
Output Voltage Selection
The output voltage can be programmed to any level between the 0.8V (for AP3585A) internal reference (0.6V for AP3585B/C) to the 80% of VIN
supply. The lower limitation of output voltage is caused by the internal reference. The upper limitation of the output voltage is caused by the
maximum available duty cycle (80%). This is to leave enough time for over-current detection. Output voltage out of this range is not allowed.
A voltage divider sets the output voltage (Refer to the typical application circuit). In real applications, choose R1 in 100Ω to 10kΩ range and
choose appropriate R2 according to the desired output voltage.
VOUT  0.8V 
R1  R2
R2
VOUT  0.6V 
R1  R2
R2
AP3585A
AP3585B/C
PCB Layout Considerations
High speed switching and relatively large peak currents in a synchronous-rectified buck converter make the PCB layout a very important part of
design. Switching current from one power device to another can generate voltage spikes across the impedances of the interconnecting bond wires
and circuit traces. The voltage spikes can degrade efficiency and radiate noise, which results in over-voltage stress on devices. Careful
component placement layout a printed circuit design can minimize the voltage spikes induced in the converter.
Follow the below layout guidelines for optimal performance of AP3585A/B/C.
1. The turn-off transition of the upper MOSFET prior to turn-off, the upper MOSFET was carrying the full load current. During turn-off, current stops
flowing in the upper MOSFET and is picked up by the low side MOSFET. Any inductance in the switched path generates a large voltage spike
during the switching interval. Careful component selections, layout of the critical components, and use shorter and wider PCB traces help in
minimizing the magnitude of voltage spikes.
2. The power components and the PWM controller should be placed firstly. Place the input capacitors, especially the high-frequency ceramic
decoupling capacitors, close to the power switches. Place the output inductor and output capacitors between the MOSFETs and the load. Also
locate the PWM controller near MOSFETs.
3. Use a dedicated grounding plane and use vias to ground all critical components to this layer. Use an immediate via to connect the component to
ground plane including GND of AP3585A/B/C.
4. Apply another solid layer as a power plane and cut this plane into smaller islands of common voltage levels. The power plane should support
the input power and output power nodes. Use copper filled polygons on the top and bottom circuit layers for the PHASE node.
5. The PHASE node is subject to very high dV/dt voltages. Stray capacitance between this island and the surrounding circuitry tend to induce
current spike and capacitive noise coupling. Keep the sensitive circuit away from the PHASE node and keep the PCB area small to limit the
capacitive coupling. However, the PCB area should be kept moderate since it also acts as main heat convection path of the lower MOSFET.
6. The PCB traces between the PWM controller and the gate of MOSFET and also the traces connecting source of MOSFETs should be sized to
carry 2A peak currents.
AP3585A/B/C
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AP3585A/B/C
NEW PRODUCT
Ordering Information
Diodes IC’s Pb-free products with "G1" suffix in the part number, are RoHS compliant and green.
Package
Temperature
Range
SO-8
Part Number
Marking ID
Packing
AP3585AMTR-G1
3585AM-G1
4000/Tape & Reel
AP3585BMTR-G1
3585BM-G1
4000/Tape & Reel
AP3585CMTR-G1
3585CM-G1
4000/Tape & Reel
AP3585AMPTR-G1
3585AMP-G1
4000/Tape & Reel
AP3585BMPTR-G1
3585BMP-G1
4000/Tape & Reel
AP3585CMPTR-G1
3585CMP-G1
4000/Tape & Reel
-40°C to +85°C
SO-8EP
Marking Information
(1)
SO-8
(Top View)
First and Second Lines: Logo and Marking ID
Third Line: Date Code
Y: Year
WW: Work Week of Molding
A: Assembly House Code
XX: 7th and 8th Digits of Batch Number
(Top View)
First and Second Lines: Logo and Marking ID
Third Line: Date Code
Y: Year
WW: Work Week of Molding
A: Assembly House Code
XX: 7th and 8th Digits of Batch Number
AP3585A/B/C
Document number: DS36819 Rev. 1 - 2
12 of 18
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January 2014
© Diodes Incorporated
A Product Line of
Diodes Incorporated
AP3585A/B/C
NEW PRODUCT
Marking Information (Cont.)
First and Second Lines: Logo and Marking ID
Third Line: Date Code
Y: Year
WW: Work Week of Molding
A: Assembly House Code
XX: 7th and 8th Digits of Batch Number
(2)
SO-8EP
(Top View)
First and Second Lines: Logo and Marking ID
Third Line: Date Code
Y: Year
WW: Work Week of Molding
A: Assembly House Code
XX: 7th and 8th Digits of Batch Number
(Top View)
First and Second Lines: Logo and Marking ID
Third Line: Date Code
Y: Year
WW: Work Week of Molding
A: Assembly House Code
XX: 7th and 8th Digits of Batch Number
(Top View)
First and Second Lines: Logo and Marking ID
Third Line: Date Code
Y: Year
WW: Work Week of Molding
A: Assembly House Code
XX: 7th and 8th Digits of Batch Number
AP3585A/B/C
Document number: DS36819 Rev. 1 - 2
13 of 18
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January 2014
© Diodes Incorporated
A Product Line of
Diodes Incorporated
AP3585A/B/C
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
°
°
7° 9
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
0.100(0.004)
0.300(0.012)
Option 1
0°
8°
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)
0.510(0. 020)
1°
7°
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 .
AP3585A/B/C
Document number: DS36819 Rev. 1 - 2
14 of 18
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January 2014
© Diodes Incorporated
A Product Line of
Diodes Incorporated
AP3585A/B/C
Package Outline Dimensions (Cont. All dimensions in mm(inch).)
Package Type: SO-8EP
2.750(0.108)
3.402(0.134)
NEW PRODUCT
(2)
AP3585A/B/C
Document number: DS36819 Rev. 1 - 2
15 of 18
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January 2014
© Diodes Incorporated
A Product Line of
Diodes Incorporated
AP3585A/B/C
Suggested Pad Layout
Package Type: SO-8
NEW PRODUCT
(1)
Dimensions
Value
AP3585A/B/C
Document number: DS36819 Rev. 1 - 2
Z
G
X
Y
E
(mm)/(inch)
(mm)/(inch)
(mm)/(inch)
(mm)/(inch)
(mm)/(inch)
6.900/0.272
3.900/0.154
0.650/0.026
1.500/0.059
1.270/0.050
16 of 18
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© Diodes Incorporated
A Product Line of
Diodes Incorporated
AP3585A/B/C
Suggested Pad Layout (Cont.)
Package Type: SO-8EP
NEW PRODUCT
(2)
Y1
G
Z
X1
Y
E
Dimensions
Value
X
Z
G
X
Y
X1
Y1
E
(mm)/(inch)
(mm)/(inch)
(mm)/(inch)
(mm)/(inch)
(mm)/(inch)
(mm)/(inch)
(mm)/(inch)
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
AP3585A/B/C
Document number: DS36819 Rev. 1 - 2
17 of 18
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January 2014
© Diodes Incorporated
A Product Line of
Diodes Incorporated
AP3585A/B/C
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 © 2012, Diodes Incorporated
www.diodes.com
AP3585A/B/C
Document number: DS36819 Rev. 1 - 2
18 of 18
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January 2014
© Diodes Incorporated
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