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AUR9718 데이터시트 PDF




BCD에서 제조한 전자 부품 AUR9718은 전자 산업 및 응용 분야에서
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부품번호 AUR9718 기능
기능 STEP DOWN DC-DC CONVERTER
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AUR9718 데이터시트, 핀배열, 회로
Data Sheet
1.5MHz, 1.5A, Step-down DC-DC Converter
AUR9718
General Description
The AUR9718 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.
Additional features including Soft Start (SS), Under
Voltage Lock Out (UVLO), Thermal Shutdown
Detection (TSD) and short circuit protection are
integrated to provide reliable product applications.
The device is available in adjustable output voltage
versions ranging from 0.8V to 0.9×VIN when input
voltage range is from 2.7V to 5.5V, and is able to
deliver up to 1.5A.
The AUR9718 is available in DFN-3×3-6 package.
Features
• High Efficiency Buck Power Converter
• Low RDS(ON) Internal Switches : 150m
• Output Current: 1.5A
• Adjustable Output Voltage from 0.8V to 0.9×VIN
• Wide Operating Voltage Range: 2.7V to 5.5V
• Built-in Power Switchers for Synchronous
Rectification with High Efficiency
• Feedback Voltage: 800mV
• 1.5MHz Switching Frequency
• Thermal Shutdown Protection
• Low Drop-out Operation at 90% Duty Cycle
• No Schottky Diode Required
Applications
• LCD TV
• Set Top Box
• Post DC-DC Voltage Regulation
PDA and Notebook Computer
DFN-3×3-6
Figure 1. Package Type of AUR9718
May. 2012 Rev. 1.0
BCD Semiconductor Manufacturing Limited
1




AUR9718 pdf, 반도체, 판매, 대치품
1.5MHz, 1.5A, Step-down DC-DC Converter
Absolute Maximum Ratings (Note 1)
Data Sheet
AUR9718
Parameter
Supply Input Voltage ( Pin VIN_SW)
Supply Input Voltage ( Pin VIN_A)
VIN_SW to VIN_A Voltage
SW Pin Switch Voltage
Enable Voltage
SW Pin Switch Current
Power Dissipation (On PCB, TA=25°C)
Thermal Resistance (Junction to Ambient, Simulation)
Operating Junction Temperature
Operating Temperature
Storage Temperature
ESD (Human Body Model)
ESD (Machine Model)
Symbol
VIN_SW
VIN_A
VSW
VEN
ISW
PD
θJA
TJ
TOP
TSTG
VHBM
VMM
Value
0 to 6.0
0 to 6.0
-0.3 to 0.3
-0.3 to VIN_SW+0.3
-0.3 to VIN_A+0.3
2.5
2.49
40.11
150
-40 to 85
-55 to 150
2000
200
Unit
V
V
V
V
V
A
W
°C/W
°C
°C
°C
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.
Recommended Operating Conditions
Parameter
Supply Input Voltage
Junction Temperature Range
Ambient Temperature Range
Symbol
VIN
TJ
TA
Min
2.7
-40
-40
Max
5.5
125
80
Unit
V
°C
°C
May. 2012 Rev. 1.0
BCD Semiconductor Manufacturing Limited
4

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AUR9718 전자부품, 판매, 대치품
1.5MHz, 1.5A, Step-down DC-DC Converter
Typical Performance Characteristics (Continued)
Data Sheet
AUR9718
Figure 8. 1.8V Load Regulation
Figure 9. 1.8V Line Regulation
Figure 10. Efficiency vs. Output Current
Figure 11. 1.2V Load Regulation
May. 2012 Rev. 1.0
BCD Semiconductor Manufacturing Limited
7

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