TPS78601DRBR集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TPS78601DRBR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TPS78601DRBR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• 1.5-A Low-Dropout Regulator With Enable

• Available in Fixed and Adjustable (1.2 V to 5.5 V)

Output Versions

• High PSRR (49 dB at 10 kHz)

• Ultralow Noise (48 μVRMS, TPS78630)

• Fast Start-Up Time (50 μs)

• Stable With a 1-μF Ceramic Capacitor

• Excellent Load and Line Transient Response

• Very Low Dropout Voltage (390 mV at Full Load,

TPS78630)

• 3 × 3 SON PowerPAD™, 6-Pin SOT223 and 5-Pin

DDPAK Package

2 Applications

• RF: VCOs, Receivers, ADCs

• Audio

• Bluetooth®, Wireless LAN

• Cellular and Cordless Telephones

• Handheld Organizers, PDAs

3 Description

The TPS786 family of low-dropout (LDO) low-power

linear voltage regulators features high power-supply rejection ratio (PSRR), ultralow noise, fast start-up,

and excellent line and load transient responses in

small outline, SOT223-6 and DDPAK-5 packages.

Each device in the family is stable, with a small 1-μF

ceramic capacitor on the output. The family uses an advanced, proprietary BiCMOS fabrication process to

yield extremely low dropout voltages (for example,

390 mV at 1.5 A). Each device achieves fast start-up

times (approximately 50 μs with a 0.001-μF bypass

capacitor) while consuming very low quiescent current (265 μA, typical). Moreover, when the device

is placed in standby mode, the supply current is

reduced to less than 1 μA. The TPS78630 exhibits

approximately 48 μVRMS of output voltage at 3-V

output noise with a 0.1-μF bypass capacitor.

Applications with analog components that are noise sensitive, such as portable RF electronics, benefit

from the high PSRR, low noise features, and the fast

response time.