TPS727285DSET集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TPS727285DSET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TPS727285DSET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• Very Low Dropout:

– 65 mV Typical at 100 mA

– 130 mV Typical at 200 mA

– 163 mV Typical at 250 mA

• 2% Accuracy Over Load, Line, Temperature

• Ultralow IQ: 7.9 μA

• Excellent Load Transient Performance:±50 mV for

200 mA Loading and Unloading Transient chip•

Available in Fixed-Output Voltages From 0.9 V to

5 V Using Innovative Factory EEPROM

Programming

• High PSRR: 70 dB at 1 kHz

• Stable with a 1.0-μF Ceramic Capacitor

• Thermal Shutdown and Overcurrent Protection

• Available in 4-Ball, 0.4-mm Pitch Wafer-Level

Chip Scale and 1.5-mm × 1.5-mm SON Packages

2 Applications

• Wireless Handsets, Smart Phones, PDAs

• MP3 Players and Other Handheld Products

• Wireless LAN, Bluetooth®, Zigbee®

• Remote Controls

• Portable Consumer Products

3 Description

The TPS727 family of low-dropout (LDO) linear

regulators are ultralow quiescent current LDOs with excellent line and ultra-fast load transient

performance and are designed for power-sensitive

applications. The LDO output voltage level is preset

by the use of innovative factory EEPROM programming. A precision band-gap and error

amplifier provides overall 2% accuracy over load, line,

and temperature extremes. The TPS727 family is

available in 1.5-mm × 1.5-mm SON and wafer chip•

scale (WCSP) packages that make the devices ideal

for handheld applications. This family of devices is fully specified over a temperature range of TJ =

–40°C to +125°C.