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PDF AP3201A Data sheet ( Hoja de datos )
| Número de pieza | AP3201A | |
| Descripción | 2A Asynchronous DC-DC Buck Converter | |
| Fabricantes | BCD | |
| Logotipo |  |
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Preliminary Datasheet
380kHz, 2A Asynchronous DC-DC Buck Converter
AP3201A
General Description
The AP3201A is a 380kHz fixed frequency, current
mode, PWM buck (step-down) DC-DC converter,
capable of driving a 2A load with high efficiency,
excellent line and load regulation. The device
integrates N-channel power MOSFET switch with
low on-resistance. Current mode control provides fast
transient response and cycle-by-cycle current limit.
A standard series of inductors are available from
several different manufacturers optimized for use
with the AP3201A. This feature greatly simplifies the
design of switch-mode power supplies.
This IC is available in HMSOP-10 package.
Features
• Input Voltage Range: 4.75V to 18V
• Fixed 380kHz Frequency
• High Efficiency: up to 93%
• Output Current: 2A
• Current Mode Control
• Built-in Over Current Protection
• Built-in Thermal Shutdown Function
• Built-in UVLO Function
• Built-in Over Voltage Protection
• Programmable Soft-start
Applications
• LCD TV
• Set Top Box
• Portable DVD
• Digital Photo Frame
HMSOP-10
Figure 1. Package Type of AP3201A
Mar. 2011 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
1
1 page  
Preliminary Datasheet
380kHz, 2A Asynchronous DC-DC Buck Converter
AP3201A
Electrical Characteristics
VIN=VEN=12V, VOUT=3.3V, unless otherwise specified. Specification with standard typeface are for TA=25
ºC, and those in boldface type apply over the full operating temperature range (TA=-40 ºC to 85 ºC)
Parameter
Input Voltage
Quiescent Current
Shutdown Supply Current
Feedback Voltage
Feedback Over Voltage
Threshold
Feedback SCP Voltage Threshold
Feedback Bias Current
High-side Switch On-resistance (Note 2)
Low-side Switch On-resistance (Note 2)
High-side Switch Leakage Current
High-side Switch Current Limit
Low-side Switch Current Limit
EN Pin Threshold
EN Pull-up Current
Input UVLO Threshold
Input UVLO Hysteresis
Oscillator Frequency
Short Circuit Oscillator
Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Error Amplifier Voltage Gain (Note 3)
Error Amplifier Transconductance
COMP to Current Sense
Transconductance
Thermal Shutdown (Note 3)
Thermal Shutdown Hysteresis (Note 3)
Soft-start Time (Note 3)
Soft-start Current
Symbol
VIN
IQ
ISHDN
VFB
VFBOV
VFBSCP
IFB
RDSONH
RDSONL
ILEAKH
ILIMH
ILIML
VENH
VENL
IEN-PH
VUVLO
VHYS
FOSC1
FOSC2
DMAX
DMIN
AEA
GEA
GCS
TOTSD
THYS
tSS
ISS
Conditions
VFB=1.0V, VEN=2V
VEN=0V
VFB=1V
ISW=0.5A
ISW=0.05A
VIN=18V, VEN=0V
VSW=0V
From drain to source
VEN=0V
VIN Rising
VFB=0.8V
VFB=1.0V
IOUT=500mA
CSS=0.1µF
Min
4.75
0.902
-0.1
2.8
1.5
3.5
Typ
1.0
1
0.920
1.1
0.6
0.22
10
0.1
3.8
0.15
1.0
3.9
0.3
380
90
90
400
700
2.4
160
30
10
6
Max
18
1.5
10
0.938
0.1
10
Unit
V
mA
µA
V
V
V
µA
Ω
Ω
µA
A
A
V
0.5
µA
4.4 V
V
kHz
kHz
%
0%
V/V
µA/V
A/V
ºC
ºC
ms
µA
Mar. 2011 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
5
5 Page 
BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
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11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AP3201A.PDF ] | |
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