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LP38693-ADJ

更新时间: 2024-11-15 11:54:39
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器电容器
页数 文件大小 规格书
14页 388K
描述
500mA Low Dropout CMOS Linear Regulators with Adjustable Output Stable with Ceramic Output Capacitors

LP38693-ADJ 数据手册

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September 24, 2010  
LP38691-ADJ  
LP38693-ADJ  
500mA Low Dropout CMOS Linear Regulators with  
Adjustable Output  
Stable with Ceramic Output Capacitors  
General Description  
Features  
The LP38691/3-ADJ low dropout CMOS linear regulators pro-  
vide 2.0% precision reference voltage, extremely low dropout  
voltage (250mV @ 500mA load current, VOUT = 5V) and ex-  
cellent AC performance utilizing ultra low ESR ceramic output  
capacitors.  
Output voltage range of 1.25V - 9V  
2.0% adjust pin voltage accuracy (25°C)  
Low dropout voltage: 250mV @ 500mA (typ, 5V out)  
Wide input voltage range (2.7V to 10V)  
Precision (trimmed) bandgap reference  
The low thermal resistance of the LLP and SOT-223 pack-  
ages allow the full operating current to be used even in high  
ambient temperature environments.  
Guaranteed specs for -40°C to +125°C  
1µA off-state quiescent current  
The use of a PMOS power transistor means that no DC base  
drive current is required to bias it allowing ground pin current  
to remain below 100 µA regardless of load current, input volt-  
age, or operating temperature.  
Thermal overload protection  
Foldback current limiting  
SOT-223 and 6-Lead LLP packages  
Enable pin (LP38693-ADJ)  
Dropout Voltage: 250 mV (typ) @ 500mA (typ. 5V out).  
Ground Pin Current: 55 µA (typ) at full load.  
Adjust Pin Voltage: 2.0% (25°C) accuracy.  
Applications  
Hard Disk Drives  
Notebook Computers  
Battery Powered Devices  
Portable Instrumentation  
Typical Application Circuits  
20126801  
20126802  
VOUT = VADJ x (1 + R1/R2)  
Note: *Minimum value required for stability.  
© 2010 National Semiconductor Corporation  
201268  
www.national.com  

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