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AAT1110 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 AAT1110
기능 Fast Transient 800mA Step-Down Converter
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AAT1110 데이터시트, 핀배열, 회로
AAT1110
Fast Transient 800mA Step-Down Converter
General Description
Features
SwitchReg
The AAT1110 SwitchReg™ is a member of
AnalogicTech's Total Power Management IC™
(TPMIC™) product family. It is a 1.4MHz step-
• VIN Range: 2.7V to 5.5V
• VOUT Fixed or Adjustable from 0.6V to VIN
• 27µA No Load Quiescent Current
down converter with an input voltage range of 2.7V
• Output Current Up to 800mA
to 5.5V and output as low as 0.6V. Its low supply
• 1.4MHz Switching Frequency
current, small size, and high switching frequency
• 120µs Soft Start
make the AAT1110 the ideal choice for portable
• Fast Load Transient
applications.
• Over-Temperature Protection
The AAT1110 is available in either a fixed version
with internal feedback or a programmable version
with external feedback resistors. It can deliver up
to 800mA of load current while maintaining a low
27µA no load quiescent current. The 1.4MHz
• Current Limit Protection
• 100% Duty Cycle Low-Dropout Operation
• <1µA of Shutdown Current
• SC70JW-8 Package
• Temperature Range: -40°C to +85°C
switching frequency minimizes the size of external
components while keeping switching losses low.
The AAT1110 feedback and control delivers excel-
lent load regulation and transient response with a
Applications
small output inductor and capacitor.
The AAT1110 is designed to maintain high efficien-
cy throughout the operating range and provides
fast turn-on time.
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Cellular Phones
Digital Cameras
Handheld Instruments
Microprocessor / DSP Core / IO Power
The AAT1110 is available in a space-saving
• PDAs and Handheld Computers
2.0x2.1mm SC70JW-8 package and is rated over
• USB Devices
the -40°C to +85°C temperature range.
Typical Application (Fixed Output Voltage)
VIN
C2
4.7μF
U1
AAT1110
3 VIN
LX 4
1 EN
OUT 2
5 AGND PGND 7
8 PGND PGND 6
L1
4.7μH
VO
C1
22μF
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AAT1110 pdf, 반도체, 판매, 대치품
AAT1110
Fast Transient 800mA Step-Down Converter
Electrical Characteristics1
TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C, VIN = 3.6V.
Symbol Description
Step-Down Converter
VIN Input Voltage
VUVLO
UVLO Threshold
VOUT
VOUT
IQ
ISHDN
ILIM
RDS(ON)H
RDS(ON)L
ΔVLinereg
VOUT
IOUT
ROUT
TS
FOSC
TSD
THYS
EN
VEN(L)
VEN(H)
IEN
Output Voltage Tolerance
Output Voltage Range
Quiescent Current
Shutdown Current
P-Channel Current Limit
High Side Switch On Resistance
Low Side Switch On Resistance
Line Regulation
Out Threshold Voltage Accuracy
Out Leakage Current
Out Impedance
Start-Up Time
Oscillator Frequency
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
Enable Threshold Low
Enable Threshold High
Input Low Current
Conditions
VIN Rising
Hysteresis
VIN Falling
IOUT = 0 to 800mA,
VIN = 2.7V to 5.5V
No Load, 0.6V Adjustable
Version
EN = AGND = PGND
VIN = 2.7V to 5.5V
0.6V Output, No Load
TA = 25°C
0.6V Output
>0.6V Output
From Enable to Output
Regulation
TA = 25°C
VIN = VOUT = 5.5V
Min
2.7
1.8
-3.5
0.6
800
591
250
1.0
1.4
-1.0
Typ
100
27
1200
0.45
0.40
0.1
600
150
1.4
140
15
Max Units
5.5
2.7
+3.5
VIN
70
1.0
609
0.2
2.0
V
V
mV
V
%
V
µA
µA
mA
Ω
Ω
%/V
mV
µA
kΩ
µs
MHz
°C
°C
0.6 V
V
1.0 µA
1. The AAT1110 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
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AAT1110 전자부품, 판매, 대치품
AAT1110
Fast Transient 800mA Step-Down Converter
Typical Characteristics
Load Transient Response
(1mA to 600mA; VIN = 3.6V; VOUT = 1.8V;
C1 = 10µF)
2.5
2.0
1.5
Time (50µs/div)
0.5
0.0
-0.5
Load Transient Response
(600mA to 800mA; VIN = 3.6V; VOUT = 1.8V;
C1 = 10µF)
2.0
1.9
1.8
1.7
Time (50µs/div)
0.8
0.7
0.6
0.5
0.4
Load Transient Response
(1mA to 600mA; VIN = 3.6V; VOUT = 1.8V;
C1 = 10µF; CFF = 100pF)
2.2
2.0
1.8
1.6
Time (50µs/div)
0.5
0.0
-0.5
Load Transient Response
(600mA to 800mA; VIN = 3.6V; VOUT = 1.8V;
C1 = 22µF)
2.0
1.9
1.8
1.7
Time (50µs/div)
0.8
0.7
0.6
0.5
0.4
Load Transient Response
(1mA to 600mA; VIN = 3.6V; VOUT = 1.8V;
C1 = 22µF; CFF = 100pF)
2.2
2.0
1.8
Time (50µs/div)
0.5
0.0
-0.5
Load Transient Response
(600mA to 800mA; VIN = 3.6V; VOUT = 1.8V;
C1 = 10µF; CFF = 100pF)
2.0
1.9
1.8
1.7
Time (50µs/div)
0.8
0.7
0.6
0.5
0.4
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Fast Transient 800mA Step-Down Converter

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