Datasheet.kr   

AAT1121 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 AAT1121
기능 Step-Down Converter
제조업체 AAT
로고 AAT 로고 



전체 20 페이지

		

No Preview Available !

AAT1121 데이터시트, 핀배열, 회로
AAT1121
1.5MHz, 250mA Step-Down Converter
General Description
The AAT1121 SwitchReg is a 1.5MHz step-down
converter with an input voltage range of 2.7V to
5.5V and output as low as 0.6V. Its low supply
current, small size, and high switching frequency
make the AAT1121 the ideal choice for portable
applications.
The AAT1121 delivers 250mA of load current, while
maintaining a low 30µA no load quiescent current.
The 1.5MHz switching frequency minimizes the size
of external components, while keeping switching
losses low. The AAT1121 feedback and control
delivers excellent load regulation and transient
response with a small output inductor and capacitor.
The AAT1121 is available in a Pb-free, 8-pin,
2x2mm TDFN or STDFN package and is rated
over the -40°C to +85°C temperature range.
Features
SwitchReg
• VIN Range: 2.7V to 5.5V
• VOUT Range: 0.6V to VIN
• 250mA Max Output Current
• Up to 96% Efficiency
• 30µA Typical Quiescent Current
• 1.5MHz Switching Frequency
• Soft-Start Control
• Over-Temperature and Current Limit
Protection
• 100% Duty Cycle Low-Dropout Operation
• <1µA Shutdown Current
• Small External Components
• Ultra-Small TDFN22-8 or STDFN22-8
Package
• Temperature Range: -40°C to +85°C
Applications
www.DataSheet4U.com
Bluetooth™ Headsets
Cellular Phones
Digital Cameras
Handheld Instruments
Portable Music Players
USB Devices
Typical Application
VIN
C1
4.7µF
AAT1121
VP LX
VIN
EN FB
GND PGND
VO = 1.8V
L1
3.0μH
R1
118kΩ
250mA
R2
59kΩ
C2
4.7µF
1121.2007.03.1.2
1




AAT1121 pdf, 반도체, 판매, 대치품
AAT1121
1.5MHz, 250mA Step-Down Converter
Electrical Characteristics1
VIN = 3.6V, TA = -40°C to +85°C, unless otherwise noted; typical values are TA = 25°C.
Symbol
VIN
VUVLO
VOUT
VOUT
IQ
ISHDN
ILIM
RDS(ON)H
RDS(ON)L
ILXLEAK
ΔVLinereg/ΔVIN
VFB
IFB
FOSC
TS
TSD
THYS
VEN(L)
VEN(H)
IEN
Description
Input Voltage
UVLO Threshold
Output Voltage Tolerance2
Output Voltage Range
Quiescent Current
Shutdown Current
P-Channel Current Limit
High-Side Switch On Resistance
Low-Side Switch On Resistance
LX Leakage Current
Line Regulation
Feedback Threshold Voltage Accuracy
FB Leakage Current
Oscillator Frequency
Startup Time
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 250mA,
VIN = 2.7V to 5.5V
No Load
EN = GND
VIN = 5.5V, VLX = 0 to VIN
VIN = 2.7V to 5.5V
VIN = 3.6V
VOUT = 1.0V
From Enable to Output
Regulation
VIN = VEN = 5.5V
Min
2.7
2.0
-3.0
0.6
0.591
1.4
-1.0
Typ
250
30
600
0.59
0.42
0.2
0.600
1.5
100
140
15
Max
5.5
2.6
3.0
Units
V
V
mV
V
%
VIN
1.0
1.0
0.609
0.2
V
µA
µA
mA
Ω
Ω
µA
%/V
V
µA
MHz
µs
°C
°C
0.6 V
V
1.0 µA
1. The AAT1121 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.
2. Output voltage tolerance is independent of feedback resistor network accuracy.
4 1121.20076.0130.1.2

4페이지










AAT1121 전자부품, 판매, 대치품
AAT1121
1.5MHz, 250mA Step-Down Converter
Typical Characteristics
P-Channel RDS(ON) vs. Input Voltage
1000
900 120°C 100°C
800 85°C
700
600
500 25°C
400
300
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Input Voltage (V)
N-Channel RDS(ON) vs. Input Voltage
750
700
120°C
650 100°C
600
85°C
550
500
450
400
350 25°C
300
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Input Voltage (V)
Load Transient Response
(10mA to 250mA; VIN = 3.6V; VOUT = 1.8V;
COUT = 4.7µF; CFF = 100pF)
2.0
1.9 VO
1.8
1.7 IO
1.6
250mA
ILX 10mA
0.2
0.0
-0.2
Time (25µs/div)
Load Transient Response
(10mA to 250mA; VIN = 3.6V; VOUT = 1.8V; COUT = 4.7µF)
2.0
1.9 VO
1.8
1.7
1.6 IO
ILX
250mA
10mA
Time (25µs/div)
0.2
0.0
-0.2
Line Response
(VOUT = 1.8V @ 250mA; CFF = 100pF)
1.90
1.85 VO
1.80
1.75
1.70
VIN
Time (25µs/div)
5.0
4.5
4.0
3.5
3.0
1121.2007.03.1.2
7

7페이지



구       성총 20 페이지
다운로드[ AAT1121.PDF 데이터시트 ]
구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

전력 반도체 판매 ( IGBT, TR 모듈, SCR, 다이오드 모듈 )

휴대전화 : 010-3582-2743


상호 : 아이지 인터내셔날

전화번호 : 051-319-2877, [ 홈페이지 ]



링크공유

링크 :

관련 데이터시트

부품번호상세설명 및 기능제조사
AAT1120

Step-Down Converter

AAT
AAT
AAT1121

Step-Down Converter

AAT
AAT

DataSheet.kr    |   2019   |  연락처   |  링크모음   |   검색  |   사이트맵