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AAT2556IWP-CA-T1 参数 Datasheet PDF下载

AAT2556IWP-CA-T1图片预览
型号: AAT2556IWP-CA-T1
PDF下载: 下载PDF文件 查看货源
内容描述: 电池充电器和降压型转换器,用于便携式应用 [Battery Charger and Step-Down Converter for Portable Applications]
分类和应用: 转换器电池便携式
文件页数/大小: 29 页 / 796 K
品牌: AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
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AAT2556  
Battery Charger and Step-Down  
Converter for Portable Applications  
Electrical Characteristics1  
VIN = 3.6V; TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.  
Symbol  
Description  
Conditions  
Min  
Typ  
Max Units  
Step-Down Converter  
VIN  
Input Voltage  
2.7  
5.5  
2.7  
V
V
VIN Rising  
VUVLO  
UVLO Threshold  
Hysteresis  
200  
mV  
V
VIN Falling  
1.8  
IOUT = 0 to 250mA,  
VIN = 2.7V to 5.5V  
-3.0  
3.0  
VIN  
1.0  
%
VOUT  
Output Voltage Tolerance2  
VOUT  
IQ  
Output Voltage Range  
Quiescent Current  
0.6  
V
µA  
µA  
mA  
Ω
No Load  
30  
ISHDN  
Shutdown Current  
EN = GND  
ILIM  
P-Channel Current Limit  
High-Side Switch On Resistance  
Low-Side Switch On Resistance  
LX Leakage Current  
600  
0.59  
0.42  
RDS(ON)H  
RDS(ON)L  
ILXLEAK  
Ω
VIN = 5.5V, VLX = 0 to VIN  
VIN = 2.7V to 5.5V  
VIN = 3.6V  
1.0  
µA  
%/V  
V
ΔVLinereg/ΔVIN Line Regulation  
0.2  
VFB  
Feedback Threshold Voltage Accuracy  
0.591 0.600 0.609  
IFB  
FB Leakage Current  
Oscillator Frequency  
VOUT = 1.0V  
0.2  
1.5  
µA  
MHz  
FOSC  
From Enable to Output  
Regulation  
TS  
Startup Time  
100  
µs  
TSD  
THYS  
VEN(L)  
VEN(H)  
IEN  
Over-Temperature Shutdown Threshold  
Over-Temperature Shutdown Hysteresis  
Enable Threshold Low  
140  
°C  
°C  
V
15  
0.6  
1.0  
Enable Threshold High  
1.4  
-1.0  
V
Input Low Current  
VIN = VEN = 5.5V  
µA  
1. The AAT2556 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
2556.2006.09.1.2