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TPS72215DBVT

更新时间： 2024-01-04 02:45:03
品牌 Logo 应用领域
德州仪器 - TI 稳压器输入元件
页数 文件大小 规格书
11页 121K
描述
LOW INPUT VOLTAGE, CAP FREE 50-mA LOW-DROPOUT LINEAR REGULATORS

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TPS72215DBVT 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOT-23
包装说明：LSSOP, TSOP5/6,.11,37针数：5
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：0.87可调性：FIXED
标称回动电压 1：0.05 V最大绝对输入电压：7 V
最大输入电压：5.5 V最小输入电压：1.8 V
JESD-30 代码：R-PDSO-G5JESD-609代码：e4
长度：2.9 mm最大电网调整率：0.0045%
湿度敏感等级：1功能数量：1
输出次数：1端子数量：5
工作温度TJ-Max：125 °C工作温度TJ-Min：-40 °C
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流 1：0.05 A最大输出电压 1：1.545 V
最小输出电压 1：1.455 V标称输出电压 1：1.5 V
封装主体材料：PLASTIC/EPOXY封装代码：LSSOP
封装等效代码：TSOP5/6,.11,37封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, LOW PROFILE, SHRINK PITCH包装方法：TR
峰值回流温度（摄氏度）：260认证状态：Not Qualified
调节器类型：FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR座面最大高度：1.45 mm
子类别：Other Regulators表面贴装：YES
技术：CMOS端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：GULL WING端子节距：0.95 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
最大电压容差：3%宽度：1.6 mm
Base Number Matches：1

TPS72215DBVT 数据手册

 浏览型号TPS72215DBVT的Datasheet PDF文件第4页浏览型号TPS72215DBVT的Datasheet PDF文件第5页浏览型号TPS72215DBVT的Datasheet PDF文件第6页浏览型号TPS72215DBVT的Datasheet PDF文件第8页浏览型号TPS72215DBVT的Datasheet PDF文件第9页浏览型号TPS72215DBVT的Datasheet PDF文件第10页 
TPS72201,TPS72215  
TPS72216,TPS72218  
www.ti.com  
SLVS390B – DECEMBER 2001 – REVISED MAY 2002  
APPLICATION INFORMATION  
TheTPS722xxfamilyoflow-dropout(LDO)regulatorsfunctionswithaverylowinputvoltage(>1.8V). Thedropoutvoltage  
is typically 50 mV at full load. Typicalquiescentcurrent(groundpincurrent)isonly85 µA and drops to 1 µA in the shutdown  
mode.  
DEVICE OPERATION  
TheTPS722xx family can be operated at low input voltages due to low voltage circuit design techniques and a PMOS pass  
element that exhibits low dropout.  
A logic low on the enable input, EN, shuts off the output and reduces the supply current to less than 1 µA. EN may be tied  
to V in applications where the shutdown feature is not used.  
IN  
Currentlimiting and thermal protection prevent damage by excessive output current and/or power dissipation. The device  
switches into a constant-current mode at approximately 350 mA; further load reduces the output voltage instead of  
increasingthe output current. The thermal protection shuts the regulator off if the junction temperature rises above 170°C.  
Recoveryisautomaticwhenthejunctiontemperaturedropsapproximately20°Cbelowthehightemperaturetrippoint. The  
PMOS pass element includes a back diode that safely conducts reverse current when the input voltage level drops below  
the output voltage level.  
A typical application circuit is shown in Figure 16.  
TPS722xx  
1
V
I
IN  
5
4
V
O
OUT  
0.1 µF  
NC  
3
EN  
+
0.1 µF  
GND  
2
Figure 16. Typical Application Circuit  
DUAL SUPPLY APPLICATION  
In portable, battery-powered electronics, separate power rails for the DSP or microcontroller core voltage (V  
) and I/O  
CORE  
peripherals (V ) are usually necessary. The TPS721xx family of LDO linear regulators is ideal for providing V  
for  
IO  
(CORE)  
the DSP or microcontroller. As shown in Figure 17, two AAA batteries provide an input voltage to a boost converter and  
the TPS72115 LDO linear regulator. The batteries combine input voltage ranges from 3.0 V down to 1.8 V near the end  
oftheirusefullives.Therefore,aboostconverterisnecessarytoprovidethetypical3.3VneededforV ,andtheTPS72115  
IO  
linear regulator provides a regulated V  
voltage, which in this example is 1.5 V. Although there is no explicit circuitry  
(CORE)  
to perform power-up sequencing of first V  
then V , the output of the linear regulator reaches its regulated voltage  
(CORE)  
IO  
muchfaster (<400 µs) than the output of any switching type boost converter due to the inherent slow start up of those types  
of converters. Assuming a boost converter with minimum V of 1.8 V is appropriately chosen, this power supply solution  
I
can be used over the entire life of the two off-the-shelf AAA batteries. Thus, this solution is very efficient and the design  
time and overall cost of the solution is minimized.  
7
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