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AAT2786IRN-AE-T1 PDF预览

AAT2786IRN-AE-T1

更新时间： 2024-01-13 18:51:46
品牌 Logo 应用领域
ANALOGICTECH 转换器开关光电二极管
页数 文件大小 规格书
27页 3393K
描述
1.5A Step-Down Converter and 150mA LDO

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中文翻译

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AAT2786IRN-AE-T1 技术参数

生命周期：Transferred包装说明：,
Reach Compliance Code：unknown风险等级：5.77
Base Number Matches：1

AAT2786IRN-AE-T1 数据手册

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PRODUCT DATASHEET  
AAT2786  
TM  
SystemPower  
1.5A Step-Down Converter and 150mA LDO  
General Description  
Features  
The AAT2786 is a dual output power solution. It includes  
a 1.5A, 1.4MHz, high-efficiency step-down converter and  
a high performance 150mA LDO regulator. The step-  
down regulator output voltage is adjustable from 0.6V to  
VIN. The LDO regulator has a factory preset fixed output  
voltage from 1.2V to 3.3V.  
• VIN Range : 2.5V to 5.5V  
• 1.5A Step-Down Converter  
VOUT Range: 0.6V to VIN  
95% Peak Efficiency  
High Efficiency across load range  
42µA No Load Quiescent Current  
Optional “PWM Only” Low Noise Mode  
Current limit and soft start  
▪
▪
▪
▪
▪
The step-down converter consumes only 42µA of no-load  
quiescent current and is designed to maintain high effi-  
ciency throughout the load range. The step-down con-  
verter has ultra-low RDS(ON) integrated MOSFETs and can  
operate up to 100% duty cycle to enable high output  
voltage, high current applications which require a low  
dropout threshold. The AAT2786 provides excellent tran-  
sient response and high output accuracy across the  
operating range. Pulling the MODE/SYNC pin high  
enables “PWM Only” mode, maintaining constant fre-  
quency and low output ripple across the operating range.  
Alternatively, the converter may be synchronized to an  
external clock input via the MODE/SYNC pin.  
▪
• 150mA LDO Regulator  
VOUT Range: 1.2V to 3.3V (Fixed)  
High Power Supply Rejection Ratio  
Low Output Noise  
▪
▪
▪
• Independent Enable Pins  
• Integrated Power MOSFETs  
• Over-Temperature Protection  
• TDFN34-16 Package  
• -40°C to +85°C Temperature Range  
Applications  
The MicroPower low dropout linear regulator in the  
AAT2786 has been specifically designed for high-speed  
turn-onandturn-offperformance,fasttransientresponse,  
and good noise and power supply ripple rejection (PSRR),  
making it ideal for powering sensitive circuits with fast  
switching requirements.  
• Cellular and Smart Phones  
• PDAs, Palmtops  
• Digital Still and Video Cameras  
• Portable Instruments  
• Battery-Powered Applications  
Over-temperature and short-circuit protection safeguard  
the AAT2786 and system components from damage.  
Typical Application  
U1  
L1  
3.3µH  
16  
1
BUCK IN  
BUCK OUT  
VP  
VP  
VIN  
LX  
LX  
FB  
R1  
15  
12  
2
5
R2  
Adj  
C5  
100  
C4  
22µF  
Opt  
C1  
opt  
C2  
10µF  
AAT2786IRN  
C3  
1µF  
R3  
59k  
13  
14  
BUCK_EN  
ON/OFF  
ON/OFF  
4
6
GND  
MODE/SYNC  
11  
9
LDO IN  
LDOIN  
LDO_OUT  
LDO OUT  
ON/OFF  
LDO_EN  
BYP  
C6  
1µF  
8
3
7
PGND  
C7  
2.2µF  
C8  
10nF  
10  
LDO_GND  
N/C  
w w w . a n a l o g i c t e c h . c o m  
2786.2008.04.1.0  
1
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