LP8900TLE-3333集成电路（IC）的线性+开关稳压器规格书PDF中文资料

LP8900TLE-3333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LP8900TLE-3333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• Input Voltage Operation: 1.8 V to 5.5 V

• Output Voltage: 1.2 V to 3.6 V

• Accuracy Over Temperature: 1%

• Output Voltage Noise: 6 μVRMS

• PSRR: 75 dB at 1 kHz

• Dropout: 110 mV at 200 mA Load

• Quiescent Current: 48 μA per Regulator

• Start-Up Time: 80 μs

• Stable With Ceramic Capacitors as Small as 0402

• Thermal-Overload and Short-Circuit Protection

2 Applications

• Battery-Operated Devices

• Hand-Held Information Appliances

• Noise Sensitive RF Applications

• DC-DC Convertor Post Regulation and Filter

3 Description

The LP8900 is a dual LDO capable of supplying 200-

mA output current per regulator. Designed to meet

the requirements of RF and analog circuits, the

LP8900 provides low device noise, high PSRR, low

quiescent current, and superior line transient

response figures.

Using new innovative design techniques, the LP8900

offers class-leading device noise performance without

a noise bypass capacitor.

The LP8900 is designed to be stable with space

saving ceramic capacitors as small as 0402 case

size, enabling a solution size < 4 mm2. Performance

is specified for a –40°C to +125°C junction

temperature range.

Output voltage options from 1.2 V to 3.6 V are

available; for availability, contact your local TI sales

office.