TPS730中文资料具有使能功能的 200mA、低压降稳压器数据手册TI规格书

描述 Description

The TPS730 family of low-dropout (LDO) low-power linear voltage regulators features high power-supply rejection ratio (PSRR), low noise, fast start-up, and excellent line and load transient responses in a small SOT-23 package. NanoStar packaging gives an ultrasmall footprint as well as an ultralow profile and package weight, making it ideal for portable applications such as handsets and PDAs. Each device in the family is stable, with a small, 2.2-µF ceramic capacitor on the output. The TPS730 family uses an advanced, proprietary BiCMOS fabrication process to yield low dropout voltages (for example, 120 mV at 200 mA, TPS73030). Each device achieves fast start-up times (approximately 50 µs with a 0.001-µF bypass capacitor) while consuming low quiescent current (170 µA typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than 1 µA. The TPS73018 exhibits approximately 33 µVRMS of output voltage noise at 1.8 V output with a 0.01-µF bypass capacitor. Applications with analog components that are noise-sensitive, such as portable RF electronics, benefit from the high PSRR and low-noise features as well as the fast response time.

特性 Features

• 200-mA RF Low-Dropout Regulator With Enable
• High PSRR (68 dB at 100 Hz)
• Fast Start-Up Time (50 µs)
• Excellent Load/Line Transient Response
• 5- and 6-Pin SOT-23 (DBV), and Wafer Chip Scale (YZQ) Packages
• RF: VCOs, Receivers, ADCs
• Cellular and Cordless Telephones
• Handheld Organizers, PDAs

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简介

TPS730属于集成电路（IC）的线性+开关稳压器。由TI制造生产的TPS730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。