AP3586CMTR-G1 [BCDSEMI]
Single Phase Synchronous Buck PWM Controller; 单相同步降压PWM控制器
| 型号： | AP3586CMTR-G1 |
| 厂家： | 
BCD SEMICONDUCTOR MANUFACTURING LIMITED |
| 描述： | Single Phase Synchronous Buck PWM Controller |
| 文件： | 总17页 (文件大小：624K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Data sheet
Single Phase Synchronous Buck PWM Controller
General Description
AP3586A/B/C
Features
The AP3586A/B/C is
a
compact synchronous
•
•
•
•
•
•
•
•
•
Supply Voltage: 5V/12V
VIN Input Range: 3.3V to 12V
0.6V/0.8V to 82% of VIN Output Range
Internal Reference: 0.6V/0.8V
Simple Single-loop Control
Voltage-mode PWM Control
Duty Cycle: 0% to 82%
Fast Transient Response
10MHz High-bandwidth Error Amplifier with
6V/µs Slew Rate
-rectified buck controller specifically designed to
operate from 5V or 12V supply voltage and deliver
high-quality output voltage as low as 0.6V
(AP3586A) or 0.8V (AP3586B/C). This device
operates at fixed 300kHz (AP3586A/B) or 200kHz
(AP3586C) frequency and provides an optimal level
of integration to reduce size and cost of the power
supply.
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.
•
•
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
)
•
•
•
•
•
•
•
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.
Over Current Protection
Over Voltage Protection
Under Voltage Protection
Integrated Boot Diode
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
Applications
•
•
•
Subsystem Power Supplies
PCI, AGP, Graphics Cards, Digital TV
SSTL-2 and DDR/2/3 SDRAM Bus Termination
Supply
efficiency,
solutions.
well-protected
and
cost-effective
•
•
Cable Modems, Set Top Boxes, and DSL
Modems
Industrial Power Supplies and General Purpose
Supplies
The AP3586A/B/C is available in SOIC-8 and
PSOP-8 packages.
SOIC-8/PSOP-8
Figure 1. Package Types of AP3586A/B/C
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Pin Configuration
MP Package
(PSOP-8)
M Package
(SOIC-8)
8
7
8
1
2
3
4
1
2
3
4
7
6
5
6
5
Figure 2. Pin Configuration of AP3586A/B/C (Top View)
Pin Description
Pin Number
Pin Name
Function
SOIC-8
PSOP-8
Bootstrap pin. Connect a bootstrap capacitor from this pin to
PHASE for creating a BOOT voltage suitable to drive a standard
N-Channel MOSFET.
1
1
BOOT
Upper-gate drive pin. Connect this pin to the upper MOSFET gate
providing the gate drive. This pin is monitored by the adaptive
shoot-through 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.
2
3
2
3
UGATE
GND
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 5V or 12V bias supply for the chip
from this pin. The pin should be bypassed with a capacitor to
GND.
4
5
4
5
LGATE/OCSET
VCC
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.
6
6
FB
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.
7
8
7
8
COMP/EN
PHASE
9
Exposed Pad
Exposed Pad as ground pin.
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Functional Block Diagram
5
1
2
8
4
/OCSET
/0.6V
6
3
7
/EN
Figure 3. Functional Block Diagram of AP3586A/B/C
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Ordering Information
AP3586
-
Circuit Type
G1: Green
A: AP3586A
B: AP3586B
C: AP3586C
Blank: Tube
TR: Tape & Reel
Package
M: SOIC-8
MP: PSOP-8
Temperature
Range
Package
Part Number
Marking ID
Packing Type
AP3586AM-G1
3586AM-G1
Tube
Tape & Reel
Tube
AP3586AMTR-G1
AP3586BM-G1
3586AM-G1
3586BM-G1
3586BM-G1
3586CM-G1
3586CM-G1
3586AMP-G1
3586AMP-G1
3586BMP-G1
3586BMP-G1
3586CMP-G1
3586CMP-G1
SOIC-8
AP3586BMTR-G1
AP3586CM-G1
Tape & Reel
Tube
AP3586CMTR-G1
AP3586AMP-G1
AP3586AMPTR-G1
AP3586BMP-G1
AP3586BMPTR-G1
AP3586CMP-G1
AP3586CMPTR-G1
Tape & Reel
Tube
-40 to 85°C
Tape & Reel
Tube
PSOP-8
Tape & Reel
Tube
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Value
-0.3 to 15
Unit
V
VCC
Supply Input Voltage
BOOT Voltage
VBOOT
-0.3 to VPHASE +15
-0.3 to 15
V
UGATE to PHASE Voltage
VUGATE
V
VPHASE
VLGATE
,
PHASE, LGATE to GND Voltage
-1 to 15
V
Other Pin Voltage
-0.3 to 6
TBD
V
mW
ºC/W
ºC
Power Dissipation
PD
θJA
Thermal Resistance
50
Operating Junction Temperature
Storage Temperature
TJ
-40 to 125
-65 to 150
260
TSTG
TLEAD
ºC
Lead Temperature (Soldering, 10 sec)
ESD (Human Body Model) (Note 2)
ESD (Machine Model) (Note 2)
ºC
2000
V
200
V
Note 1: 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.
Note 2: Devices are ESD sensitive. Handling precaution is recommended.
Recommended Operating Conditions
Parameter
Symbol
VCC
Min
5
Max
12
Unit
V
Supply Input Voltage
Operating Ambient Temperature
TA
-40
85
°C
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Electrical Characteristics
VCC=12V, TA=25°C, unless otherwise specified.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
SUPPLY INPUT
UGATE and LGATE Pins
Open; Switching
ICC
Supply Current
5
4
mA
VFB=VREF+0.1V,
ICC_Q
VIN
Quiescent Supply Current
Power Input Voltage
mA
V
No Switching
3.0
4.0
13.2
4.4
POWER ON RESET
VCC Rising Threshold
VCC Threshold Hysteresis
VPOR
VCC Rising
4.2
V
VPOR_HYS
500
mV
OSCILLATOR
For AP3586A/B
For AP3586C
270
180
300
200
1.4
330
220
kHz
kHz
VP-P
fOSC
Oscillator Frequency
∆VOSC
Ramp Amplitude
ERROR AMPLIFIER
Open Loop DC Gain
Gain-bandwidth Product
Slew Rate
GDC_OL
GBW
SR
55
3
70
10
dB
MHz
V/µs
µA/V
µA
6
Transconductance
Output Source Current
Output Sink Current
800
120
120
1100
VFB<VREF
80
80
VFB>VREF
µA
PWM CONTROLLER GATE DRIVERS
Upper
Gate
Source
V
BOOT-VPHASE=12V,
IUG_SRC
IUG_SNK
RUGATE
-1.0
1.5
2
A
A
Ω
Current
VBOOT-VUGATE=6V
BOOT-VPHASE=12V,
V
Upper Gate Sink Current
VBOOT-VUGATE=6V
Upper
Gate
Gate
Sink
50mA Source Current
4
2
Resistance
Lower
Source
ILG_SRC
ILG_SNK
RLGATE
VCC-VLGATE=6V
VLGATE=6V
-1
1.5
1
A
A
Ω
Current
Lower Gate Sink Current
Lower
Gate
Sink
50mA Source Current
Resistance
PHASE Falling to LGATE
Rising Delay
V
PHASE<1.2V to VLGATE>1.2V
50
50
ns
ns
LGATE Falling to UGATE
Rising Delay
VLGATE<1.2V to
(VUGATE-VPHASE)>1.2V
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Electrical Characteristics (Continued)
VCC=12V, TA=25ºC, unless otherwise specified.
Parameter
Symbol
Conditions
Min
Typ
0
Max
Unit
%
Minimum Duty Cycle
Maximum Duty Cycle
REFERENCE VOLTAGE
75
82
89
%
AP3586A
0.591
0.788
0.6
0.8
10
0.609
0.812
50
V
V
Feedback Voltage
VFB
IFB
AP3586B/C
VFB=5V
Feedback Bias Current
PROTECTION
nA
Under Voltage Protection
Over Voltage Protection
OC Current Source
VFB_UVP
VFB_OVP
IOPS
0.3
0.4
1.1
0.5
V
V
19.5
21.5
23.5
µA
Built-in Maximum OCP
Voltage
VOCP_MAX
0.3
V
AP3586A
AP3586B
AP3586C
2
Soft-start Interval
tSS
ms
2.7
3.6
Enable Threshold
Thermal Shutdown
VCOMP/EN
TOTSD
0.25
0.30
160
0.35
V
ºC
Thermal Shutdown
Hysteresis
THYS
20
ºC
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Typical Performance Characteristics
4
1.0
3
VOUT= 1.2V
VOUT= 1.2V
2
0.5
1
0
0.0
-1
-2
-0.5
-3
-4
-1.0
0
2
4
6
8
10
12
14
16
18
20
5
6
7
8
9
10
11
12
13
Output Current (A)
Input Voltage (V)
Figure 4. Line Regulation
Figure 5. Load Regulation
320
315
310
305
300
295
290
285
280
275
270
320
315
310
305
300
295
290
285
280
275
270
4
5
6
7
8
9
10
11
12
13
14
-40
-20
0
20
40
60
80
100
120
Temperature (oC)
Input Voltage (V)
Figure 6. Switching Frequency vs. Temperature
Figure 7. Switching Frequency vs. Input Voltage
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Typical Performance Characteristics (Continued)
0.810
0.808
0.806
0.804
0.802
0.800
0.798
0.796
0.794
0.792
0.790
0.810
0.808
0.806
0.804
0.802
0.800
0.798
0.796
0.794
0.792
0.790
4
5
6
7
8
9
10
11
12
13
14
-40
-20
0
20
40
60
80
100
120
Temperature (oC)
Input Voltage (V)
Figure 8. Reference Voltage vs. Temperature
Figure 9. Reference Voltage vs. Input Voltage
VIN
IL
10V/div
5A/div
VOUT
0.5V/div
VOUT
0.5V/div
VCOMP
VCOMP
1V/div
0.5V/div
VLGATE
5V/div
VLGATE
20V/div
Time 2ms/div
Time 1ms/div
Figure 10. Power-on Waveform
(VIN=12V, VOUT=1.2V, IOUT=0A)
Figure 11. Enable Waveform
(VIN=12V, VOUT=1.2V, IOUT=0A)
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Typical Performance Characteristics (Continued)
VOUT_AC
50mV/div
VOUT_AC
50mV/div
IOUT
IOUT
2A/div
5A/div
Time 20µs/div
Time 20µs/div
Figure 12. Load Transient Response
(VIN=12V, VOUT=1.2V, IOUT=0A to 10A)
Figure 13. Load Transient Response
(VIN=12V, VOUT=1.2V, IOUT=0A to 20A)
VIN
10V/div
VUGATE
10V/div
VOUT
1V/div
VLGATE
20V/div
VCOMP
1V/div
VFB
0.5V/div
VLGATE
5V/div
IL
10A/div
Time 20ms/div
Time 10ms/div
Figure 14. Over Current Protection
(VIN=12V, VOUT=1.2V, IOUT=20A)
Figure 15. Under Voltage Protection
(VIN=12V, VOUT=1.2V, IOUT=20A)
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
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Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Typical Application
Figure 16. Typical Application Circuit of AP3586A/B/C
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
11
Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Function Description
The AP3586A/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.
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 0.6V in 2ms for AP3586A (to
0.8V in 2.7ms for AP3586B; to 0.8V in 3.6ms for
AP3586C) 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.
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 AP3586A/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 SS signal keeps ramping up after it exceeds the
internal 0.6V (0.8V for AP3586B/C) reference
voltage. However, the internal 0.6V(0.8V for
AP3586B/C) reference voltage takes over the
behavior of error amplifier after SS>VREF. When the
SS signal climbs to its ceiling voltage (4.2V),
AP3586A/B/C claims the end of soft start cycle and
enables the under voltage protection of the output
voltage.
The COMP/EN is
a
multifunctional pin:
control loop compensation and chip enable as shown
in Figure 17. 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 AP3586. 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 AP3586A/B/C
initiates its soft start cycle.
Figure 18 shows a typical start up interval for
AP3586A/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 AP3586A/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
AP3586A/B/C asserts the end of 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
V
COMP is higher than 0.45V during normal operation.
Figure 17. Chip Enable Function
Soft Start
A built-in Soft Start is used to prevent surge current
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
12
Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Function Description (Continued)
following equation:
2× IOCSET × ROCSET
RDS(ON) of thelow side MOSFET
VIN 10V/Div
ILIMIT
=
V
OUT 0.5V/Div
Because the RDS(ON) of MOSFET increases with
temperature, it is necessary to take this thermal effect
into consideration in calculating OCP point.
COMP 0.5V/Div
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 20 shows the hiccupped over current
protection. Only four times of hiccup is allowed in
over current protection. If over current condition still
exists after four times of hiccup, controller will be
latched.
LGATE 10V/Div
1ms/Div
Figure 18. Soft Start Behavior of AP3586A/B/C
Power Input Detection
The AP3586A/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, AP3586A/B/C asserts
that VIN is not ready and stops the soft start cycle.
However, the internal SS continues ramping up to
V
DD. Another soft start is initiated after SS ramps up
Figure 20. Hiccupped Over Current Protection
to VDD. The hiccup period is about 1ms. Figure 19
shows the start-up waveform where VIN does not
present initially.
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.
VIN 10V/Div
The AP3586A/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. AP3586A/B/C provides
non-latched OVP. The controller will return to normal
operation if over voltage condition is removed.
V
OUT 0.5V/Div
LGATE 10V/Div
IL 10A/Div
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.
1ms/Div
Figure 19. 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 IOC(21.5µA
typically), flowing through ROCSET determines the
OCP trigger point, which can be calculated using the
Thermal Shutdown
If the junction temperature of the device reaches the
thermal shutdown limit of 160°C, the PWM and the
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
13
Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Function Description (Continued)
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.
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 AP3586A/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.
Output Voltage Selection
The output voltage can be programmed to any level
between the 0.6V internal reference (0.8V for
AP3586B/C) to the 82% 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
(82%). 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.
R1 + R2
VOUT = 0.6V ×
AP3586A
R2
R1+ R2
R2
AP3586B/C
VOUT = 0.8V ×
PCB Layout Considerations
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.
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, that results in over-voltage stress on devices.
Careful component placement layout a printed circuit
design can minimize the voltage spikes induced in the
converter.
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.
Follow the below layout guidelines for optimal
performance of AP3586A/B/C.
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
14
Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Mechanical Dimensions
SOIC-8
Unit: mm(inch)
4.700(0.185)
0.320(0.013)
1.350(0.053)
1.750(0.069)
5.100(0.201)
0.675(0.027)
0.725(0.029)
D
5.800(0.228)
6.200(0.244)
1.270(0.050)
TYP
D
20:1
0.800(0.031)
0.200(0.008)
0.100(0.004)
0.300(0.012)
0°
8°
1.000(0.039)
3.800(0.150)
4.000(0.157)
0.190(0.007)
0.250(0.010)
1°
5°
0.330(0.013)
0.510(0.020)
0.900(0.035)
06)
.0
0(0
.15
R0
0.450(0.017)
0.800(0.031)
Note: Eject hole, oriented hole and mold mark is optional.
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
15
Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Mechanical Dimensions (Continued)
PSOP-8
Unit: mm(inch)
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
16
BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
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BCD Semiconductor Manufacturing Limited
Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.
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