TPS769集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TPS769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TPS769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

• AEC-Q100 qualified for automotive applications:

– Temperature grade 1: −40°C to 125°C, TA

• Input voltage range:

– Legacy chip: 2.7V to 10V (13.5V absolute max)

– New chip: 2.5V to 16V (18V absolute max)

• Output voltage range (adjustable):

– Legacy chip: 1.25V to 5.5V

– New chip: 1.2V to 5.5V

• Output voltage range (fixed):

– Legacy chip: 1.5V to 5V

– New chip: 1.2V to 5V

• High PSRR (new chip): 46dB at 1MHz

• Output accuracy:

– Legacy chip: 3% over load and temperature

– New chip: 1.2% over load and temperature

• Dropout voltage:

– Legacy chip: 71mV (typ) at 100mA

– New chip: 150mV (typ) at 100mA

• Integrated fault protection:

– Thermal shutdown

– Overcurrent protection

• Internal soft-start time (new chip): 750μs (typical)

• Output capacitor for stable operation:

– Legacy chip: ≥ 4.7μF

– New chip: ≥ 2.2μF

• Package: 5-pin SOT-23, RθJA = 178.6°C/W (new

chip)

2 Applications

• Hybrid, electric, and powertrain systems

• ADAS modules

• Infotainment and cluster

• Industrial transportation

3 Description

The TPS769-Q1 is a low-dropout (LDO) linear voltage

regulator. This device supports an input voltage range

from 2.5V to 16V (new chip) and up to 100mA of load

current. For the new chip, the supported output range

is from 1.2V to 5.0V (fixed version) or from 1.2V to

5.5V (adjustable version).

The wide input voltage range makes the device a

good choice for operating from regulated rails (such

as 10V or 12V). The voltage range is up to 16V for

the new chip. This range allows the LDO to generate

the bias voltage for a variety of applications. These

applications include power microcontrollers (MCUs)

and processors, as well as silicon carbide (SiC) gate

drivers and microphones.

Wide bandwidth PSRR performance is greater than

70dB at 1kHz and 46dB at 1MHz (new chip). This

performance helps attenuate the switching frequency

of an upstream DC/DC converter and minimizes post

regulator filtering. The new chip supports an internal

soft-start circuit mechanism that reduces inrush

current during start-up, thus allowing for smaller input

capacitance.