TL5209DR集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TL5209DR属于集成电路（IC）的线性+开关稳压器。由美国德州仪器公司制造生产的TL5209DR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• Adjustable Output Voltage

• 1%/2% Accuracy (25°C/Full Range)

• 500-mV (Maximum) Dropout at Full Load of

500 mA

• Tight Regulation Overtemperature Range

– 0.1%/V (Maximum) Line Regulation

– 0.7% (Maximum) Load Regulation

• Ultra Low-Noise Capability (300 nV/√Hz Typical)

• Shutdown Current of 3 μA (Maximum)

• Low Temperature Coefficient

• Current Limiting and Thermal Protection

• Stable With Minimum Load of 1 mA

• Reverse-Battery Protection reverse•

Applications

– Portable Applications (PDAs, Laptops,

Cell Phones)

– Consumer Electronics

– Post-Regulation for SMPS

• Available in Convenient SOIC-8 Surface-Mount

Package

2 Applications

• Set-Top Boxes

• PCs and Notebooks

• EPOS

• Building Automation

3 Description

The TL5209 device is 500-mA low-dropout (LDO)

regulator that is well suited for portable applications. It has a lower quiescent current than most traditional

PNP regulators and allows for a shutdown current of

0.05 μA (typical). The TL5209 also has very good

dropout voltage characteristics, requiring a maximum

dropout of 10 mV at light loads and 500 mV at full load. In addition, the LDO also has a 1% output

voltage accuracy and very tight line and load

regulation that is comparable to its CMOS

counterparts.

For noise-sensitive applications, the TL5209 allows

for low-noise capability through an external bypass capacitor connected to the BYP pin, which reduces

the output noise of the regulator. Other features

include current limiting, thermal shutdown, reverse•

battery protection, and low temperature coefficient.

The TL5209 is available with adjustable output.

Offered in an SOIC-8 surface-mount package, the

TL5209 is characterized for operation over the virtual junction temperature ranges of –40°C to 125°C.