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PDF AP3586A Data sheet ( Hoja de datos )
| Número de pieza | AP3586A | |
| Descripción | Single Phase Synchronous Buck PWM Controller | |
| Fabricantes | BCD | |
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Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
General Description
The AP3586A/B/C is a compact synchronous
-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.
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.
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
solutions.
The AP3586A/B/C is available in SOIC-8 and
PSOP-8 packages.
Features
• 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
• 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
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
Mar. 2012 Rev. 1. 1
SOIC-8/PSOP-8
Figure 1. Package Types of AP3586A/B/C
BCD Semiconductor Manufacturing Limited
1
1 page  
Data sheet
Single Phase Synchronous Buck PWM Controller
AP3586A/B/C
Absolute Maximum Ratings (Note 1)
Parameter
Supply Input Voltage
BOOT Voltage
UGATE to PHASE Voltage
PHASE, LGATE to GND Voltage
Other Pin Voltage
Power Dissipation
Thermal Resistance
Operating Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 sec)
ESD (Human Body Model) (Note 2)
ESD (Machine Model) (Note 2)
Symbol
VCC
VBOOT
VUGATE
VPHASE,
VLGATE
PD
θJA
TJ
TSTG
TLEAD
Value
-0.3 to 15
-0.3 to VPHASE +15
-0.3 to 15
-1 to 15
-0.3 to 6
TBD
50
-40 to 125
-65 to 150
260
2000
200
Unit
V
V
V
V
V
mW
ºC/W
ºC
ºC
ºC
V
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
Supply Input Voltage
Operating Ambient Temperature
Symbol
VCC
TA
Min
5
-40
Max
12
85
Unit
V
°C
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
5
5 Page 
Single Phase Synchronous Buck PWM Controller
Typical Application
Data sheet
AP3586A/B/C
Figure 16. Typical Application Circuit of AP3586A/B/C
Mar. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet AP3586A.PDF ] | |
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