TPS7A2618DRVR集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TPS7A2618DRVR属于集成电路（IC）的线性+开关稳压器。由德州仪器制造生产的TPS7A2618DRVR稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。

1 Features

1• Ultra-low IQ: 2.0 μA

• Input voltage: 2.4 V to 18 V

• Output voltage options available:

– Fixed: 1.25 V to 5.5 V

– Adjustable: 1.24 V to 17.4 V

• 1% accuracy over temperature

• Low dropout: 590 mV (max) at 500 mA

• Open-drain, power-good output

• Active overshoot pulldown protection

• Thermal shutdown and overcurrent protection

• Operating junction temperature: –40°C to +125°C

• Stable with 1-μF output capacitors

• Package: 6-pin WSON

2 Applications

• Home and building automation

• Multicell power banks

• Smart grid and metering

• Portable power tools

• Motor drives

• White goods

• Portable appliances

3 Description

The TPS7A26 low-dropout (LDO) linear voltage

regulator supports a 2.4-V to 18-V input voltage

range with very-low quiescent current (IQ). These

features help modern appliances meet increasingly

stringent energy requirements and help extend

battery life in portable-power solutions.

The TPS7A26 is available in both fixed and

adjustable versions. For more flexibility or higher

output voltages, the adjustable version uses feedback

resistors to set the output voltage from 1.24 V to

17.4 V. Both versions have 1% output regulation

accuracy that provides precision regulation for

microcontroller (MCU) references.

With the open-drain, power-good (PG) output the

device can provide a reset to an MCU or be wire-

ORed and level-shifted with other open-drain PGs to

provide a system-wide PG or reset.

The TPS7A26 LDO operates more efficiently than

standard linear regulators because the maximum

dropout voltage is less than 590 mV at 500 mA of

current. This maximum dropout voltage allows for

87.7% efficiency from a 5.7-V input voltage (VIN) to

5.0-V output voltage (VOUT).

For lower power applications, consider the TPS7A25.