TPS73047DBVR集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TPS73047DBVR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TPS73047DBVR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

• 200mA low-dropout regulator with enable

• Available in fixed voltages from 1.8V to 3.3V and

adjustable voltages (1.22V to 5.5V)

• High PSRR (68dB at 100Hz)

• Low noise:

– 55μVRMS (legacy chip)

– 69μVRMS (new chip)

• Stable with a 2.2μF ceramic capacitor

• Excellent load, line transient response

• Very low dropout voltage: 120mV (typ)

• For a more updated portfolio device, see the

TPS7A20

2 Applications

• TV applications

• Connected peripherals and printers

• Portable medical equipment

• Home theater and entertainment applications

• Building automation

3 Description

The TPS730 is a low-dropout (LDO) voltage regulator

that features high power-supply rejection ratio (PSRR)

and offers excellent line and load transient responses.

This device is stable with a small 2.2μF ceramic

capacitor on the output. The TPS730 offers low

dropout voltages (for example, 120mV typical at

200mA). The low output noise and great PSRR

makes this device designed to power sensitive analog

loads. The TPS730 offers a flexible option for post

regulation with the adjustable capability.