TPS7A8001DRBR集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TPS7A8001DRBR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TPS7A8001DRBR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• Low-Dropout 1-A Regulator With Enable

• Adjustable Output Voltages: 0.8 V to 6 V

• Fixed Output Voltages: 0.8 V to 6 V

• Wide-Bandwidth High PSRR:

– 63 dB at 1 kHz

– 57 dB at 100 kHz

– 38 dB at 1 MHz

• Low Noise: (14 × VOUT ) μVRMS Typical (100 Hz to

100 kHz)

• Stable with a 4.7-μF Ceramic Capacitor

• Excellent Load/Line Transient Response

• 3% Overall Accuracy (Over Load/Line/Temp)

• Overcurrent and Overtemperature Protection

• Very Low Dropout: 170 mV Typical at 1 A

• 3-mm × 3-mm VSON-8 DRB Package

2 Applications

• Telecom Infrastructure

• Audio

• High-Speed I/F (PLL/VCO)

3 Description

The TPS7A80 family of low-dropout linear regulators

(LDOs) offer very high power-supply ripple rejection

(PSRR) at the output. This LDO family uses an

advanced BiCMOS process and a PMOSFET pass

device to achieve very low noise, excellent transient

response, and excellent PSRR performance.

The TPS7A80 family is stable with a 4.7-μF ceramic

output capacitor, and uses a precision voltage

reference and feedback loop to achieve a worst-case

accuracy of 3% over all load, line, process, and

temperature variations.

This family is fully specified over the temperature

range of TJ = –40°C to +125°C, and is offered in a 3-

mm × 3-mm, VSON-8 package with a thermal pad.