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REG71055DDCR PDF预览

REG71055DDCR

更新时间： 2024-11-24 04:08:27
品牌 Logo 应用领域
BB 光电二极管
页数 文件大小 规格书
18页 434K
描述
60mA Switched-Cap BUCK/BOOST CONVERTER

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中文翻译

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REG71055DDCR 数据手册

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SBAS221E − DECEMBER 2001 − REVISED SEPTEMBER 2003  
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FEATURES  
DESCRIPTION  
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Wide Input Range: 1.8V to 5.5V  
The REG710 is a switched capacitor voltage converter,  
that produces a regulated, low-ripple output voltage from  
an unregulated input voltage. A wide-input supply voltage  
of 1.8V to 5.5V makes the REG710 ideal for a variety of  
battery sources, such as single cell Li-Ion, or two and three  
cell nickel- or alkaline-based chemistries.  
Automatic Step-Up/Step-Down Operation  
Low Input Current Ripple  
Low Output Voltage Ripple  
Minimum Number of External  
ComponentsNo Inductors  
1MHz Internal Oscillator Allows Small  
Capacitors  
The input voltage may vary above and below the output  
voltage and the output will remain in regulation. It works  
equally well for step-up or step-down applications without  
the need for an inductor, providing low EMI DC/DC  
conversion. The high switching frequency allows the use  
of small surface-mount capacitors, saving board space  
and reducing cost. The REG710 is thermally protected and  
current limited, protecting the load and the regulator during  
fault conditions. Typical ground pin current (quiescent  
current) is 65µA with no load, and less than 1µA in  
shutdown mode. The 5.5V version of the REG710 is  
available in a thin TSOT23-6 package. All other versions  
are available in a small SOT23-6 package.  
Shutdown Mode  
Thermal and Current Limit Protection  
Six Output Voltages Available:  
5.5V, 5.0V, 3.3V, 3.0V, 2.7V, 2.5V  
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Small Packages:  
− SOT23-6  
− TSOT23-6 (REG71055 and REG71050 Only)  
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Evaluation Modules Available:  
REG710EVM-33, REG710EVM-5  
APPLICATIONS  
CPUMP  
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Smart Card Readers  
SIM Card Supplies  
Cellular Phones  
µ
0.22 F  
Enable  
Portable Communication Devices  
Personal Digital Assistants  
Notebook and Palm-Top Computers  
Modems  
REG71050  
REG710−5  
3.3V to  
4.2V  
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CIN  
COUT  
µ
2.2 F  
µ
2.2 F  
GND  
LED  
LED  
LED  
Electronic Games  
Handheld Meters  
PCMCIA Cards  
REG710 Used in White LED Backlight Application  
Card Buses  
White LED Drivers  
LCD Displays  
Battery Backup Supplies  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments  
semiconductor products and disclaimers thereto appears at the end of this data sheet.  
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ꢈ ꢢꢠ ꢡꢢꢣ ꢂ ꢇꢢ ꢤ ꢏꢊ ꢈ ꢆ ꢡꢆ ꢈ ꢎ ꢇꢆ ꢢꢠꢤ ꢏꢊ ꢣ ꢇꢉꢊ ꢇꢊ ꢣ ꢂꢤ ꢢꢡ ꢕꢊꢩ ꢎ ꢤ ꢟꢠꢤ ꢇꢣ ꢥꢂ ꢊꢠꢇ ꢤ ꢤꢇ ꢎꢠꢋ ꢎꢣ ꢋ ꢅ ꢎꢣ ꢣ ꢎ ꢠꢇꢪꢨ  
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Copyright 2001−2003, Texas Instruments Incorporated  
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www.ti.com  
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