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REG113EA-3.3/250

更新时间： 2024-11-19 22:38:47
品牌 Logo 应用领域
德州仪器 - TI 稳压器
页数 文件大小 规格书
16页 364K
描述
DMOS 400mA Low-Dropout Regulator

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REG113EA-3.3/250 数据手册

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REG113  
SBVS031D – MARCH 2001 – REVISED SEPTEMBER 2005  
DMOS  
400mA Low-Dropout Regulator  
DESCRIPTION  
FEATURES  
The REG113 is a family of low-noise, low-dropout linear  
regulators with low ground pin current. Its new DMOS topol-  
ogy provides significant improvement over previous designs,  
including low-dropout voltage (only 250mV typ at full load),  
and better transient performance. In addition, no output  
capacitor is required for stability, unlike conventional low-  
dropout regulators that are difficult to compensate and re-  
quire expensive low ESR capacitors greater than 1µF.  
● CAP-FREE DMOS TOPOLOGY:  
Ultra Low Dropout Voltage:  
250mV typ at 400mA  
Output Capacitor not Required for Stability  
● UP TO 500mA PEAK, TYPICAL  
● FAST TRANSIENT RESPONSE  
●
VERY LOW NOISE: 28µVrms  
● HIGH ACCURACY: ±1.5% max  
● HIGH EFFICIENCY:  
Typical ground pin current is only 850µA (at IOUT = 400mA)  
and drops to 10nA when not enabled. Unlike regulators with  
PNP pass devices, quiescent current remains relatively con-  
stant over load variations and under dropout conditions.  
IGND = 850µA at IOUT = 400mA  
Not Enabled: IGND = 0.01µA  
The REG113 has very low output noise (typically 28µVrms  
for VOUT = 3.3V with CNR = 0.01µF), making it ideal for use  
in portable communications equipment. Accuracy is main-  
tained over temperature, line, and load variations. Key  
parameters are tested over the specified temperature range  
(–40°C to +85°C).  
● 2.5V, 2.85V, 3.0V, 3.3V, AND 5.0V OUTPUT VERSIONS  
● OTHER OUTPUT VOLTAGES AVAILABLE UPON  
REQUEST  
● FOLDBACK CURRENT LIMIT  
● THERMAL PROTECTION  
● SMALL SURFACE-MOUNT PACKAGES:  
SOT23-5 and MSOP-8  
The REG113 is well protected—internal circuitry provides a  
current limit which protects the load from damage, further-  
more, thermal protection circuitry keeps the chip from being  
damaged by excessive temperature. The REG113 is avail-  
able in SOT23-5 and MSOP-8 packages.  
APPLICATIONS  
● PORTABLE COMMUNICATION DEVICES  
● BATTERY-POWERED EQUIPMENT  
● PERSONAL DIGITAL ASSISTANTS  
● MODEMS  
Enable  
VOUT  
VIN  
+
+
0.1µF  
(1)  
REG113  
● BAR-CODE SCANNERS  
COUT  
● BACKUP POWER SUPPLIES  
NR(2)  
GND  
NOTES: (1) Optional. (2) NR = Noise Reduction.  
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.  
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
Copyright © 2001-2005, Texas Instruments Incorporated  
www.ti.com  
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REG113EA-3.3/250 替代型号

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