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LQH32CN4R7M23 PDF预览

LQH32CN4R7M23

更新时间： 2024-11-14 23:15:15
品牌 Logo 应用领域
ANALOGICTECH 转换器稳压器电感器测试大电流电感器
页数 文件大小 规格书
26页 558K
描述
1MHz Step-Down Converter/LDO Regulator

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中文翻译

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LQH32CN4R7M23 数据手册

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AAT2506  
1MHz Step-Down Converter/LDO Regulator  
™
SysPwr  
General Description  
Features  
The AAT2506 is a member of AnalogicTech's Total  
Power Management IC™ (TPMIC™) product fam-  
ily. It is a low dropout (LDO) linear regulator and a  
step-down converter with an input voltage range of  
2.7V to 5.5V, making it ideal for applications with  
single lithium-ion/polymer batteries.  
•
•
•
•
•
•
•
•
•
VIN Range: 2.7V to 5.5V  
VOUT Range: 0.6V to VIN  
300mA LDO Current Output  
400mV LDO Dropout Voltage at 300mA  
High Output Accuracy: ±1.5%  
Fast LDO Line / Load Transient Response  
600mA, 97% Efficiency Step-Down Converter  
Fast Turn-On Time (100µs Typical)  
25µA No Load Quiescent Current for Step-  
Down Converter  
The LDO has an independent input and is capable  
of delivering up to 300mA. The linear regulator has  
been designed for high-speed turn-on and turn-off  
performance, fast transient response, and good  
power supply rejection ratio (PSRR). Other fea-  
tures include low quiescent current and a low  
dropout voltage.  
•
•
•
•
•
•
•
•
•
Shutdown Current <1µA  
Low RDS(ON) 0.4Ω Integrated Power Switches  
100% Duty Cycle Low Dropout Operation  
1MHz Switching Frequency  
100µs Typical Soft Start  
Over-Temperature Protection  
Current Limit Protection  
Available in TDFN33-12 Package  
-40°C to +85°C Temperature Range  
The AAT2506 is available in either a fixed version  
with internal feedback or a programmable version  
with external feedback resistors. It can deliver  
600mA of load current while maintaining a low  
25µA no load quiescent current. The 1MHz switch-  
ing frequency minimizes the size of external com-  
ponents while keeping switching losses low. The  
AAT2506 feedback and control delivers excellent  
load regulation and transient response with a small  
output inductor and capacitor.  
Applications  
•
•
•
•
•
•
Cellular Phones  
Digital Cameras  
Handheld Instruments  
Microprocessor/DSP Core/IO Power  
PDAs and Handheld Computers  
Portable Media Players  
The AAT2506 is designed to maintain high efficien-  
cy throughout the operating range, which is critical  
for portable applications.  
The AAT2506 is available in a 12-pin TDFN33  
package, and is rated over a temperature range of  
-40°C to +85°C.  
Typical Application  
VIN = 2.7V to 5.5V  
AAT2506 Step-Down Converter Efficiency  
(VOUT = 2.5V; L = 10µH)  
C3  
10µF  
3
5
9
6
7
8
4
100  
VP  
VCC  
EN  
10  
2
VLDO  
ENLDO  
OUT  
BYP  
GND  
U1  
L1  
3.3V at 300mA  
90  
80  
70  
60  
LX  
4.7µH  
11  
12  
1
VIN = 3.3V  
FB  
SGND  
PGND  
C1  
22µF  
C4  
2.2µF  
C5  
AAT2506  
10nF  
0.1  
1
10  
100  
1000  
L1 Sumida CDRH3D16-4R7 C1 Murata GRM219R61A475KE19  
C3 Murata GRM21BR60J106KE19  
Output Current (mA)  
2506.2005.12.1.0  
1
1234567...26

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