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AAT1154IAS-1.0-T1 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 AAT1154IAS-1.0-T1
기능 1MHz 3A Buck DC/DC Converter
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AAT1154IAS-1.0-T1 데이터시트, 핀배열, 회로
General Description
The AAT1154 SwitchReg™ is a member of
AnalogicTech™'s Total Power Management™ IC
product family. The Step-down switching converter
is ideal for applications where high efficiency, small
size, and low ripple are critical. Able to deliver 3A
with an internal power MOSFET, the current-mode
controlled IC provides high efficiency. Fully inter-
nally compensated, the AAT1154 simplifies system
design and lowers external part count.
The AAT1154 is available in an SOP-8 package,
rated over -40 to 85°C.
AAT1154
1MHz 3A Buck DC/DC Converter
Features
SwitchReg
• VIN Range: 2.7-5.5Volts
• Fixed or adjustable VOUT: 1.0V - 4.2V
• 3A output current
• Up to 95% efficiency
• Integrated low on resistance power switch
• Internally compensated current mode control
• 1MHz switching frequency
• Constant PWM mode
• Low output ripple with light load
• Internal softstart
• Current limit protection
• Over-Temperature protection
• SOP-8 package
• -40 to 85°C Temperature Range
Typical Application
INPUT
100
10µF
0.1µF
Applications
• Computer Peripherals
• Set Top Boxes
• Network Cards
• Cable/DSL Modems
• High efficiency conversion from 5V or 3.3V
supply
VP
AAT1154
VCC
FB
LX
ENABLE
GND
1.5µH
120µF
OUTPUT
1154.2003.08.0.91
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AAT1154IAS-1.0-T1 pdf, 반도체, 판매, 대치품
AAT1154
1MHz 3A Buck DC/DC Converter
Electrical Characteristics (VIN = VCC = VP = 5V, TA= -40 to 85°C unless otherwise noted. Typical
values are at TA = 25°C)
Symbol
Description
Conditions
VIN
VOUT
VUVLO
VUVLO(HYS)
IQ
ISHDN
ILIM
RDS(ON)L
η
VOUT (VOUT*VIN)
VOUT/VOUT
FOSC
VEN(L)
VEN(H)
TSD
THYS
Input Voltage Range
Output Voltage Tolerance
Under Voltage Lockout
Under Voltage Lockout Hysteresis
Quiescent Supply Current
Shutdown Current
Current Limit
High Side Switch On Resistance
Efficiency
Load Regulation
Line Regulation
Oscillator Frequency
Enable Threshold Low
Enable Threshold High
Over Temp Shutdown Threshold
Over Temp Shutdown Hysteresis
VIN = VOUT + 0.2 to 5.5V,
IOUT = 0 to 3A
VIN Rising
VIN Falling
No Load, VFB= 0 V
VEN = 0 V, VIN= 5.5V
TA = 25°C
TA = 25°C
IOUT = 1.0 A
ILOAD = 0 - 3A
VIN= 2.7 to 5.5V
TA = 25°C
Min Typ Max Units
2.7 5.5 V
-5.0 5.0 %
2.5 V
1.2 V
250 mV
630 1000 µA
1.0 µA
4.4 A
60 m
92
±2.6 %
0.75 %/V
1 MHz
0.6 V
1.4 V
140 °C
15 °C
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AAT1154IAS-1.0-T1 전자부품, 판매, 대치품
Typical Characteristics
Inrush and Output Overshoot Characteristic
No Load
14
12 Inductor Current
10
8
6
4 Input
2
0
Output
-2
0
0.4 0.8
1.2
Time (millisec)
1.6
6
4
2
0
-2
-4
-6
-8
-10
2
Output Ripple
IOUT = 3.0A, VOUT = 3.3V, VIN = 5.0V
4
2
0
-2
-4
-6
-8
200 uF 6.3V Ceramic
-10 TDK P/N C3325X5R0J107M
-12
0
12
3
Time (µsec)
4
7
6
5
4
3
2
1
0
-1
5
Loop Crossover Gain and Phase
16
12
8
4
0 3x 100µF
-4 2x 100µF
-8
100µF 6.3V Ceramic
-12 TDK P/N C3225X5R0J107M
-16
10000
Frequency (Hz)
180
135
Phase
90
45
0
-45
-90
-135
-180
100000
1154.2003.08.0.91
AAT1154
1MHz 3A Buck DC/DC Converter
Output Ripple
IOUT = 3.0A, VOUT = 3.3V, VIN = 5.0V
4
2
0
-2
-4
-6
-8
300 µF 6.3VCeramic
-10 TDK P/N C3325X5R0J107M
-12
0 12 3
Time (µsec)
4
7
6
5
4
3
2
1
0
-1
5
Tantalum Output Ripple
IOUT = 3.0A, VOUT = 3.3V, VIN = 5.0V
40 7
20 6
05
-20 4
-40 3
-60 2
-80
120 µF 6.3V Tantalum Vishay
-100 P/N 594D127X96R3C2T
-120
0 12 3 4
1
0
-1
5
Time (µsec)
Loop Crossover Gain and Phase
16
12
8
4
0
-4
-8
-12
-16
10000
180
120 µF 6.3V Tantalum
Vishay P/N 594D127X96R3C2T 135
Phase
90
45
0
Gain
-45
-90
-135
Frequency (Hz)
-180
100000
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부품번호상세설명 및 기능제조사
AAT1154IAS-1.0-T1

1MHz 3A Buck DC/DC Converter

Advanced Analogic Technologies
Advanced Analogic Technologies

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