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TPS72116DBVT

更新时间： 2024-01-04 09:22:41

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
14页	202K
描述
LOW INPUT VOLTAGE, CAP FREE 150-mA LOW-DROPOUT LINEAR REGULATORS

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TPS72116DBVT 数据手册

TPS72101, TPS72115

TPS72116, TPS72118

www.ti.com

SLVS352B – DECEMBER 2001 – REVISED MAY 2002

PROGRAMMING THE TPS72101 ADJUSTABLE LDO REGULATOR

The output voltage of the TPS72101 adjustable regulator is programmed using an external resistor divider as shown in

Figure 18. The output voltage is calculated using:

ǒ_{1 )}Ǔ

(1)

+ V

ref

Where:

= 1.225 V typ (the internal reference voltage)

ref

ResistorsR1andR2shouldbechosenforapproximately10-µAdividercurrent. Lowervalueresistorscanbeusedbutoffer

no inherent advantage and waste more power. Higher values should be avoided, as leakage currents at FB increase the

output

voltage

error.

The

recommended

design

procedure

choose

R2 = 121 kΩ to set the divider current at 10 µA and then calculate R1 using:

R1 +

* 1 R2

ǒ Ǔ

(2)

ref

Where:

= 1.225 V

ref

TPS72101

OUTPUT VOLTAGE

PROGRAMMING GUIDE

DIVIDER RESISTANCE

OUTPUT

VOLTAGE

(V)

0.1 µF

≥1.7 V

†

(kΩ)

OUT

2.5

3.3

127

205

121

≤0.9 V

0.1 µF

GND

†

1% values shown.

Figure 18. TPS72101 Adjustable LDO Regulator Programming

REGULATOR PROTECTION

The TPS721xx pass element has a built-in back diode that safely conducts reverse current when the input voltage drops

below the output voltage (e.g., during power down). Current is conducted from the output to the input and is not internally

limited. If extended reverse voltage is anticipated, external limiting might be appropriate.

TheTPS721xx also features internal current limiting and thermalprotection. Duringnormaloperation, theTPS721xxlimits

output current to approximately 350 mA. When current limiting engages, the output voltage scales back linearly until the

overcurrent condition ends. While current limiting is designed to prevent gross device failure, care should be taken not to

exceed the power dissipation ratings of the package. If the temperature of the device exceeds 170°C,thermal-protection

circuitry shuts it down. Once the device has cooled down to below 150°C, regulator operation resumes.

1...6 7 8910 11 12...14

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TPS72116DBVT 替代型号

型号	品牌	替代类型	描述	数据表
TPS72116DBVTG4	TI	类似代替	LOW INPUT VOLTAGE, CAP FREE 150-mA LOW-DROPOUT LINEAR REGULATORS
TPS72116DBVRG4	TI	类似代替	LOW INPUT VOLTAGE, CAP FREE 150-mA LOW-DROPOUT LINEAR REGULATORS
TPS72116DBVR	TI	类似代替	LOW INPUT VOLTAGE, CAP FREE 150-mA LOW-DROPOUT LINEAR REGULATORS

与TPS72116DBVT相关器件

型号	品牌	获取价格	描述	数据表
TPS72116DBVTG4	TI	获取价格	LOW INPUT VOLTAGE, CAP FREE 150-mA LOW-DROPOUT LINEAR REGULATORS
TPS72118	TI	获取价格	LOW INPUT VOLTAGE, CAP FREE 150-mA LOW-DROPOUT LINEAR REGULATORS
TPS72118DBVR	TI	获取价格	LOW INPUT VOLTAGE, CAP FREE 150-mA LOW-DROPOUT LINEAR REGULATORS
TPS72118DBVRG4	TI	获取价格	LOW INPUT VOLTAGE, CAP FREE 150-mA LOW-DROPOUT LINEAR REGULATORS
TPS72118DBVT	TI	获取价格	LOW INPUT VOLTAGE, CAP FREE 150-mA LOW-DROPOUT LINEAR REGULATORS
TPS72118DBVTG4	TI	获取价格	LOW INPUT VOLTAGE, CAP FREE 150-mA LOW-DROPOUT LINEAR REGULATORS
TPS72118-EP	TI	获取价格	LOW INPUT VOLTAGE, CAP FREE 150 mA LOW-DROPOUT (LDO) LINEAR REGULATOR
TPS72118MDBVREP	TI	获取价格	LOW INPUT VOLTAGE, CAP FREE 150 mA LOW-DROPOUT (LDO) LINEAR REGULATOR
TPS721A	TOSHIBA	获取价格	LIGHT-RECEIVING DEVICE FOR PLASTIC FIBER/ POLYMER-CLAD FIBER
TPS722	TI	获取价格	具有使能功能的 50mA、低压降稳压器

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