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PDF AP3408 Data sheet ( Hoja de datos )
| Número de pieza | AP3408 | |
| Descripción | 4MHz High Efficiency Synchronous Buck Converter | |
| Fabricantes | BCD Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AP3408 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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Preliminary Datasheet
2A, 4MHz High Efficiency Synchronous Buck Converter
AP3408
General Description
The AP3408 is a current mode, PWM synchronous
buck DC/DC converter, capable of driving a 2A load
with high efficiency, excellent line and load
regulation. It operates in continuous PWM mode.
The AP3408 integrates synchronous P-channel and
N-channel power MOSFET switches with low
on-resistance. It is ideal for portable applications
powered from a single Li-ion battery. 100% duty
cycle and low on-resistance P-channel internal power
MOSFET can maximize the battery life.
The switching frequency of AP3408 can be
programmable from 300kHz to 4MHz, which allows
small-sized components, such as capacitors and
inductors. A standard series of inductors from several
different manufacturers are available. This feature
greatly simplifies the design of switch-mode power
supplies.
The AP3408 is available in DFN-3×3-10 and PSOP-8
packages.
Features
• Input Voltage Range: 2.6 to 5.5V
• Adjustable Output from 0.8 to 5V
• 0.8V Reference Voltage with ± 2% Precision
• Output Current: 2A
• High Efficiency up to 95%
• Low RDSON Internal Switches
• Programmable Frequency: 300kHz to 4MHz
• Current Mode Control
• Forced Continuous-mode Operation
• 100% Duty Cycle
• Synchronizable Switching Frequency
• Power Good Output Voltage Monitoring
• Built-in Soft-start
• Built-in Short Circuit Protection
• Built-in Thermal Shutdown Protection
• Built-in Current Limit Function
Applications
• Portable Media Player
• Digital Still and Video Cameras
• Notebook
DFN-3×3-10
PSOP-8
Jan. 2013 Rev. 1. 1
Figure 1. Package Types of AP3408
BCD Semiconductor Manufacturing Limited
1
1 page  
Preliminary Datasheet
2A, 4MHz High Efficiency Synchronous Buck Converter
Recommended Operating Conditions
AP3408
Parameter
Input Voltage
Maximum Output Current
Operating Junction Temperature
Symbol
VIN
IOUT (MAX)
TJ
Min
2.6
2
-40
Max
5.5
125
Unit
V
A
ºC
Electrical Characteristics
VIN=VDD =VPVDD=3.3V, TA=25℃, unless otherwise specified.
Parameters
INPUT SECTION
Input Voltage Range
Supply Current
Shutdown Supply Current
Under Voltage Threshold
Lockout
Under Voltage Hysteresis
Lockout
FEEDBACK SECTION
Feedback Voltage
FB Pin Bias Current
Current Sense Transresistance
Switching Leakage Current
Error Gain Amplifier Voltage
Error1Amplifier1Trans-conductance
Symbol Conditions
VDD
IQ
ISHDN
VUVLO
VFB=0.75V,
No Switching
Shutdown,
VIN=5.5V
VDD Rising
VHUVLO
VFB
IFB
RT
VSHDN/RT=VIN
=5.5V
GV
GS
Min Typ Max Unit
2.6 5.5 V
460 µA
1 µA
2.2 V
300 mV
0.784 0.8 0.816 V
0.1 0.4 µA
0.2 Ω
1 µA
800
800
µA
/V
Jan. 2013 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
5
5 Page 
Preliminary Datasheet
2A, 4MHz High Efficiency Synchronous Buck Converter
AP3408
Mechanical Dimensions (Continued)
PSOP-8
Unit: mm(inch)
Jan. 2013 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AP3408.PDF ] | |
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