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PDF AP3410 Data sheet ( Hoja de datos )
| Número de pieza | AP3410 | |
| Descripción | 1.5MHz Synchronous Step-down DC-DC Converter | |
| Fabricantes | BCD Semiconductor | |
| Logotipo |  |
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Preliminary Datasheet
1.5MHz Synchronous Step-down DC-DC Converter
AP3410
General Description
The AP3410 is a high efficiency step-down DC-DC
voltage converter. The chip operation is optimized by
peak-current mode architecture with built-in
synchronous power MOSFET switchers. The
oscillator and timing capacitors are all built-in
providing an internal switching frequency of 1.5MHz
that allows the use of small surface mount inductors
and capacitors for portable product implementations.
Integrated Soft Start (SS), Under Voltage Lock Out
(UVLO), Thermal Shutdown Detection (TSD) and
Short Circuit Protection are designed to provide
reliable product applications.
The device is available in adjustable output voltage
version ranging from 0.6V to 0.9×VIN when input
voltage range is from 2.5V to 5.5V, and is able to
deliver up to 1.2A.
The AP3410 is available in SOT-23-5 and
DFN-2×2-6 packages.
Features
• High Efficiency Buck Power Converter
• Wide Input Voltage Range: 2.5V to 5.5V
• Adjustable Output Voltage: 0.6V to 0.9×VIN
• Low RDS(ON) Internal Switches:200mΩ (VIN=5V)
• Built-in Power Switches for Synchronous
Rectification with High Efficiency
• Output Current: 1.2A
• Feedback Voltage: 600mV
• 1.5MHz Constant Frequency Operation
• Thermal Shutdown Protection
• Low Dropout Operation at 100% Duty Cycle
• No Schottky Diode Required
• Input Over Voltage Protection
• Output Over Voltage Protection
• Over Current Protection
Applications
• Post DC-DC Voltage Regulation
• PDA and Notebook Computer
SOT-23-5
DFN-2×2-6
Mar. 2013 Rev. 1. 1
Figure 1. Package Types of AP3410
BCD Semiconductor Manufacturing Limited
1
1 page  
Preliminary Datasheet
1.5MHz Synchronous Step-down DC-DC Converter
Recommended Operating Conditions
AP3410
Parameter
Supply Input Voltage
Operating Ambient Temperature
Operating Junction Temperature
Symbol
VIN
TA
TJ
Min
2.5
-40
-40
Max
5.5
85
125
Unit
V
ºC
ºC
Electrical Characteristics
VIN=VEN=5V, VOUT=1.2V, VFB=0.6V, L=2.2µH, CIN=4.7µF, COUT=10µF, TA=25°C, unless otherwise
specified.
Parameters
Symbol
Conditions
Min Typ Max Unit
Input Voltage Range
VIN
2.5 5.5 V
Shutdown Current
IOFF VEN=0
0.1 µA
Active Current
ION VFB=0.55V
220 µA
Regulated Feedback
Voltage
VFB
0.588 0.6 0.612
V
Regulated Output
Voltage Accuracy
∆VOUT/VOUT
VIN=2.5V to 5.5V,
IOUT=0 to 1.2A
-3
3%
Peak Inductor Current
IPK
1.5 1.9
A
Oscillator Frequency
PMOSFET RDS(ON)
NMOSFET RDS(ON)
EN High Level Input
Voltage
EN Low Level Input
Voltage
EN Input Current
Soft Start Time
fOSC
VIN=2.5V to 5.5V
1.2
1.5
1.8 MHz
RDS(ON)P
VIN=5V
200 mΩ
RDS(ON)N
VIN=5V
200 mΩ
VEN_H
1.5 V
VEN_L
IEN
tSS
0.4 V
0.1 µA
400 µs
Maximum Duty Cycle
DMAX
100 %
Under Voltage Lock
Out Threshold
VUVLO
Rising
Falling
Hysteresis
2.3
2.1 V
0.2
Thermal Shutdown
TSD Hysteresis=30°C
155 160 °C
Mar. 2013 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
5
5 Page 
BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
IMPORTANT NOTICE
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-
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responsibility for use of any its products for
any liability arising out of the application or
any
use
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11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AP3410.PDF ] | |
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