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AAT2500IWP-AN-T1 PDF预览

AAT2500IWP-AN-T1

更新时间: 2024-01-23 05:05:07
品牌 Logo 应用领域
ANALOGICTECH 转换器稳压器电源电路电源管理电路
页数 文件大小 规格书
26页 862K
描述
1MHz Step-Down Converter/LDO Regulator

AAT2500IWP-AN-T1 技术参数

是否Rohs认证: 符合生命周期:Obsolete
Reach Compliance Code:unknown风险等级:5.72
Base Number Matches:1

AAT2500IWP-AN-T1 数据手册

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AAT2500  
1MHz Step-Down Converter/LDO Regulator  
SystemPower  
General Description  
Features  
The AAT2500 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  
300mA LDO Current Output  
400mV LDO Dropout Voltage at 300mA  
High Output Accuracy: ±1.5%  
Fast LDO Line / Load Transient Response  
400mA, 96% Efficiency Step-Down Converter  
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  
Low Dropout 100% Duty Cycle  
1MHz Switching Frequency  
Internal Soft Start  
Over-Temperature Protection  
Current Limit Protection  
The 400mA step-down converter is designed to  
minimize external component size and cost while  
maintaining a low 25µA no load quiescent current.  
Available in TDFN33-12 or STDFN33-12  
Package  
-40°C to +85°C Temperature Range  
Peak current mode control with internal compen-  
sation provides a stable converter with a low equiv-  
alent series resistance (ESR) ceramic output  
capacitor for extremely low output ripple.  
Applications  
For maximum battery life, the step-down converter  
increases to 100% duty cycle and has a typical  
180mV dropout voltage at 400mA. The output volt-  
age is either fixed or adjustable with an integrated  
P- and N-channel MOSFET power stage and  
1MHz switching frequency.  
Cellular Phones  
Digital Cameras  
Handheld Instruments  
Microprocessor/DSP Core/IO Power  
PDAs and Handheld Computers  
Portable Media Players  
The AAT2500 is available in a 12-pin TDFN33 or  
STDFN33 package, and is rated over a tempera-  
ture range of -40°C to +85°C.  
Typical Application  
VIN = 2.7V to 5.5V  
AAT2500 Step-Down Converter Efficiency  
C3  
10μF  
100  
3
5
9
6
7
8
4
VP  
VCC  
EN  
2.5V  
2.5V at 400mA  
95  
90  
85  
80  
75  
70  
65  
60  
10  
2
VLDO  
ENLDO  
OUT  
BYP  
GND  
U1  
L1  
3.3V at 300mA  
LX  
4.7μH  
1.8V  
11  
12  
1
FB  
SGND  
PGND  
C1  
4.7μF  
C4  
2.2μF  
C5  
AAT2500  
VIN = 3.3V  
10nF  
0.1  
1
10  
100  
1000  
L1 Sumida CDRH3D16-4R7 C1 Murata GRM219R61A475KE19  
C3 Murata GRM21BR60J106KE19  
Load Current (mA)  
2500.2006.05.1.16  
1

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