TPS79301DBVR集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TPS79301DBVR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TPS79301DBVR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

• Low-dropout regulator with enable

• Available in fixed-voltage versions:

– 1.8V to 4.75V (legacy chip)

– 1.8V to 3.3V (new chip)

• Adjustable output voltage range: 1.22V to 5.5V

• Low noise:

– 55μVRMS (legacy chip)

– 69μVRMS (new chip)

• Fast start-up time:

– 50μs (legacy chip)

– 500μs (new chip)

• Very-low dropout voltage: 112mV (typ)

• For a more updated portfolio device, see the

TPS7A20

2 Applications

• TV applications

• Building automation

• Smartphones and tablets

• Connected peripherals and printers

• Home theater and entertainment applications

3 Description

The TPS793 is a low-dropout (LDO) voltage

regulators 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 TPS793

offers low dropout voltages for example, 112mV

(typical) at 200mA. The low output noise and great

PSRR makes this device suitable to power sensitive

analog loads. The TPS793 offers a flexible option for

post regulation with the adjustable capability.