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PDF AP3583A Data sheet ( Hoja de datos )
| Número de pieza | AP3583A | |
| Descripción | Single Phase Synchronous Buck PWM Controller | |
| Fabricantes | BCD | |
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Data Sheet
Single Phase Synchronous Buck PWM Controller With Reference Input AP3583/A
General Description
The AP3583/A is a simple single-phase synchronous
buck controller. It operates from 5V or 12V supply
voltage and delivers high quality output voltage as
low as 0.6V. This device operates at fixed 200kHz
(AP3583) or 300kHz (AP3583A) frequency and
provides an optimum compromise between efficiency,
external component size and cost.
With integrated linear regulator bootstrap diode, and
N-Channel MOSFET gate drives, the AP3583/A can
reduce external component count and board space
requirements.
The AP3583/A supports both tracking mode and
stand-alone mode operation. The output voltage is
tightly regulated to the external reference voltage
from 0.4V to 3V at tracking mode or internal 0.6V
reference at stand-alone mode.
Other features include internal soft-start, under
voltage protection, over current protection and
shutdown function. With aforementioned functions,
this part provides customers a compact, high
efficiency, well-protected and cost-effective
solutions.
The AP3583/A is available in PSOP-8 package.
Features
• Supply Voltage: 5V/12V
• VIN Input Range: 3.0V to 13.2V
• 0.6V to 80% of VIN Output Range
• Internal Reference: 0.6V
• Support Tracking Mode and Stand-alone Mode
• Simple Single-loop Control
• Voltage-mode PWM Control
• Duty Cycle: 0% to 80%
• Fast Transient Response
• Fixed Oscillator Frequency: 200/300kHz
• Lossless, Programmable Over Current Protection
(Uses Lower MOSFET RDS(ON) )
• Start-up into Pre-biased Output
• Built-in Thermal Shutdown
• Built-in Soft-start
• Over Current/Voltage Protection
• Under Voltage Protection
• Integrated Boot Diode
Applications
• Power Supplies for Microprocessors/Peripherals
• PCs, Embedded Controllers, Memory Supplies
• DSP and Core Communications Processor
Supplies
• Subsystem Power Supplies
• PCI, AGP, Graphics Cards and 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
• 5V/12V Input DC-DC Regulators
• Low-voltage Distributed Power Supplies
Dec. 2011 Rev. 1. 1
PSOP-8
Figure 1. Package Type of AP3583/A
BCD Semiconductor Manufacturing Limited
1
1 page  
Data Sheet
Single Phase Synchronous Buck PWM Controller With Reference Input AP3583/A
Electrical Characteristics
VCC=12V, TA=25°C, unless otherwise specified.
Parameter
SUPPLY INPUT
Supply Voltage
Supply Current
Symbol
VCC
ICC
Quiescent Supply Current
ICC_Q
Power Input Voltage
POWER ON RESET
VCC Rising Threshold
VCC Threshold Hysteresis
OSCILLATOR
VIN
VPOR
VPOR_HYS
Oscillator Frequency
fOSC
Ramp Amplitude
∆VOSC
PWM CONTROLLER GATE DRIVERS
Upper Gate Source Current
IUG_SRC
Upper Gate Sink Current
IUG_SNK
Upper Gate Sink Resistance
Lower Gate Source Current
Lower Gate Sink Current
Lower Gate Sink Resistance
PHASE Falling to LGATE
Rising Delay
LGATE Falling to UGATE
Rising Delay
Minimum Duty Cycle
Maximum Duty Cycle
REFERENCE VOLTAGE
Feedback Voltage
RUGATE
ILG_SRC
ILG_SNK
RLGATE
VFB
Conditions
Min Typ Max
UGATE1and1LGATE
Pin1Open;
VCC=12V,1Switching
VFB=VREF+0.1V,
No Switching
4.5
3.0
13.2
3
2
13.2
VCC Rising
4.0 4.2 4.4
300
AP3583
AP3583A
VCC=12V
180 200 220
270 300 330
1.0
VBOOT-VPHASE=12V,
VBOOT-VUGATE=6V
VBOOT-VPHASE=12V,
VBOOT-VUGATE=6V
-1
1.5
50mA Sink Current
VBOOT-VPHASE=12V
1.6 3.2
VCC-VLGATE=6V
VLGATE=6V
VCC=12V,
50mA Source Current
-1
1.5
12
VPHASE<1.2V
to
VLGATE>1.2V
VLGATE<1.2V
to
(VUGATE-VPHASE)>1.2V
50
50
0
75 80 85
Stand-alone Mode
0.591 0.6 0.609
Unit
V
mA
mA
V
V
mV
kHz
V
A
A
Ω
A
A
Ω
ns
ns
%
%
V
Dec. 2011 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
5
5 Page 
Data Sheet
Single Phase Synchronous Buck PWM Controller With Reference Input AP3583/A
Typical Application
Figure 22. Typical Application Circuit of AP3583/A
Dec. 2011 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AP3583A.PDF ] | |
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