TPS71550DCKRG4集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TPS71550DCKRG4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TPS71550DCKRG4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

• Input voltage range: 2.5 V to 24 V (30 V max)

• Very low IQ: 3.2 μA at 50-mA load current

• Output current: Up to 50 mA

• Stable with output capacitor ≥ 0.47 μF

• Available output voltage options:

– Fixed: 1.8 V, 1.9 V, 2.3 V, 2.5 V, 3 V,

3.3 V, 3.45 V, 5 V

– Adjustable: 1.2 V to 15 V

• Overcurrent protection

• Package: 5-pin SC70 (DCK)

• Specified junction temperature: –40°C to +125°C

• For an 80-mA rated current and higher power

package, see the TPS715A

Applications

• Home and building automation

• Retail automation and payment

• Grid infrastructure

• Medical applications

• Lighting applications

2 Description

The TPS715 low-dropout (LDO) linear voltage

regulators are low quiescent current devices that

offer the benefits of a wide input voltage range and

low-power operation in miniaturized packaging. The

low dropout voltage and low quiescent current of

the TPS715 allows operation at extremely low power

levels. Thus, the TPS715 is designed for batterypowered

applications and as a power-management

attachment to low-power microcontrollers.

The TPS715 is available in both fixed and adjustable

versions. For more flexibility or higher output voltages,

the adjustable version uses feedback resistors to set

the output voltage from 1.205 V to 15 V. The TPS715

LDOs support a low dropout of typically 415 mV at

50 mA of load current. The low quiescent current

(3.2 μA typically) is stable over the entire range of

output load current (0 mA to 50 mA). The TPS715

also features an internal soft-start to lower the inrush

current. The built-in overcurrent limit helps protect the

regulator in the event of a load short or fault.