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AAT1106 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 AAT1106
기능 600mA Step-Down Converter
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AAT1106 데이터시트, 핀배열, 회로
General Description
The AAT1106 SwitchReg™ is a 1.5MHz constant
frequency current mode PWM step-down convert-
er with a unique adaptive slope compensation
scheme allowing the device to operate with a lower
range of inductor values to optimize size and pro-
vide efficient operation. It is ideal for portable
equipment powered by single-cell Lithium-ion bat-
teries and is optimized for high efficiency, achiev-
www.DataSheet4U.cionmg levels up to 96%.
The AAT1106 can supply up to 600mA load current
from a 2.5V to 5.5V input voltage and the output
voltage can be regulated as low as 0.6V. The
device also can run at 100% duty cycle for low
dropout operation, extending battery life in portable
systems. In addition, light load operation provides
very low output ripple for noise sensitive applica-
tions and the 1.5MHz switching frequency mini-
mizes the size of external components while keep-
ing switching losses low.
The AAT1106 is available in adjustable and fixed
(1.5V, 1.8V) output voltage versions, comes in a
Pb-free, low-profile 5-pin TSOT23 package, and is
rated over the -40°C to +85°C temperature range.
AAT1106
600mA Step-Down Converter
Features
SwitchReg
• VIN Range: 2.5V to 5.5V
• VOUT: Adjustable 0.6V to VIN
• Up to 600mA Output Current
• Up to 96% Efficiency
• 1.5MHz Switching Frequency
• 100% Duty Cycle Dropout Operation
• Adaptive Slope Compensated Current Mode
Control for Excellent Line and Load Transient
Response
• <1µA Shutdown Current
• Short-Circuit and Thermal Fault Protection
• TSOT23-5 Package
• -40°C to +85°C Temperature Range
Applications
• Cellular Phones, Smartphones
• Digital Still Cameras
• Digital Video Cameras
• Microprocessor and DSP Core Supplies
• MP3 and Portable Media Players
• PDAs
• Wireless and DSL Modems
Typical Application
VIN
2.5V to 5.5V
C1
4.7µF
IN LX
AAT1106-1.8
EN OUT
GND
L1
2.2µH
VOUT
1.8V
C3
10µF
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AAT1106 pdf, 반도체, 판매, 대치품
AAT1106
600mA Step-Down Converter
Electrical Characteristics
VIN = VEN = 3.6V, TA = 25°C, unless otherwise noted.
Symbol Description
Step-Down Converter
VIN Input Voltage Range
IQ Input DC Supply Current
www.DataSheet4U.com
VFB
Regulated Feedback Voltage
IFB
VOUT
FB Input Bias Current
Regulated Output Voltage
VOUT/ Output Voltage Line
VOUT/VIN Regulation
VOUT/ Output Voltage Load
VOUT/IOUT Regulation
ILIM Maximum Output Current
FOSC Oscillator Frequency
TS Startup Time
RDS(ON)
P-Channel MOSFET
N-Channel MOSFET
Peak Inductor Current
VEN(L)
VEN(H)
IEN
TSD
THYS
Output Over-Voltage Lockout
Enable Threshold Low
Enable Threshold High
Input Low Current
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
Conditions
Active Mode, VFB = 0.5V
Shutdown Mode, VFB = 0V, VIN = 4.2V
TA = 25°C
TA = 0°C TA +85°C
TA = -40°C TA +85°C
VFB = 0.65V
AAT1106ICB-1.5, -40°C TA 85°C
AAT1106ICB-1.8, -40°C TA 85°C
VIN = 2.5V to 5.5V, IOUT = 10mA
IOUT = 10mA to 600mA
VIN = 3.0V
VFB = 0.6V or VOUT = 100%
From Enable to Output
Regulation
ILX = 300mA
ILX = 300mA
VIN = 3V, VFB = 0.5V or VOUT = 90%;
Duty Cycle <35%
VOVL = VOVL - VFB
Min Typ Max Units
2.5
0.5880
0.5865
0.5850
-30
1.455
1.746
270
0.08
0.6000
0.6000
0.6000
1.500
1.800
5.5
400
1.0
0.6120
0.6135
0.6150
30
1.545
1.854
V
µA
V
nA
V
0.11 0.40 %/V
0.0015
%/mA
600
1.2 1.5
mA
1.8 MHz
100 µs
0.30 0.50
0.20 0.45
1.20 A
60 mV
0.4 V
1.4 V
-1.0 1.0 µA
150 °C
15 °C
1. 100% production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.
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AAT1106 전자부품, 판매, 대치품
Typical Characteristics
Frequency VS. Temperature
1.60
1.55
1.50
1.45
1.40
1.35
1.30
www.DataSheet4U.com 1.25
1.20
1.15
1.10
-50
-25
0 25 50
Temperature (°C)
100
150
AAT1106
600mA Step-Down Converter
Input Supply Current vs. Temperature
320
300
280
260
240
220
200
-50 -30 -10 10 30 50 70
Temperature (°C)
90
Load Transient Response
(PWM Mode Only; ILOAD = 100mA to 400mA; L = 2.2µH;
CIN = 10µF; COUT = 10µF; VIN = 3.6V; VOUT = 1.8V)
VSW
2V/div
VOUT
100mV/div
ILOAD
500mA/div
40µs/div
Load Transient Response
(Light Load Mode to PWM Mode; ILOAD = 28mA to 400mA;
L = 2.2µH; CIN = 10µF; COUT = 10µF; VIN = 3.6V; VOUT = 1.8V)
VSW
2V/div
VOUT
200mV/div
Light Load
PWM
ILOAD
500mA/div
4µs/div
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