General Description

The MIC94310 Ripple Blocker™ is a monolithic

integrated circuit that provides low-frequency ripple

attenuation (switching noise rejection) to a regulated

output voltage. This is important for applications where

a DC/DC switching converter is required to lower or

raise a battery voltage, but where switching noise

cannot be tolerated by sensitive downstream circuits

such as in RF applications. The MIC94310 maintains

high power supply ripple rejection (PSRR) with input

voltages operating near the output voltage level to

improve overall system efficiency. A low-voltage logic

enable pin facilitates ON/OFF control at typical GPIO

voltage levels.

The MIC94310 operates from an input voltage of 1.8V

to 3.6V.

Packaged in a 4-pin 1.2 mm × 1.6 mm TDFN, a 5-pin

SOT-23, or a 0.88 mm × 0.88 mm 4-Ball WLCSP, the

MIC94310 has a junction operating temperature range of -40°C to +125°C.

Features

• 1.8V to 3.6V Input Voltage Range

• Active Noise Rejection Over a Wide Frequency

Band: >50 dB from 10 Hz to 10 MHz at 200 mA

Load

• Rated to 200 mA Output Current

• Fixed Output Voltages

• Current-Limit and Thermal-Limit Protected

• 1.2 mm x 1.6 mm 4-Pin TDFN

• 5-Pin SOT-23

• Ultra-Small 0.88 mm x 0.88 mm WLCSP

• Logic-Controlled Enable Pin

• -40°C to +125°C Junction Temperature Range

Applications

• Smartphones/Smart Books

• Tablet PC/Notebooks and Webcams

• Digital Still and Video Cameras

• Global Positioning Systems

• Mobile Computing

• Automotive and Industrial Applications

MIC94310-4YCS-TR属于集成电路（IC） > 线性 + 开关稳压器。微芯科技股份有限公司制造生产的MIC94310-4YCS-TR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。