描述 Description

The RP122 is a LDO regulator that provides low output noise, high ripple rejection and fast response characteristics, achieved by low supply current. This device is suitable not only for noise-sensitive applications such as high-performance analog circuits, but also for various applications.

Key Benefits

? Achieves Low Noise, High PSRR and Fast Response.

? Provides Saving Space by Adopting of Small Package without Noise Bypass Capacitor.

? Provides Long-Duration of Operation for Battery-powered Equipment by Low Supply Current of 9.5 μA (Typ.), despite the low-noise LDO.

特性 Features

? Input Voltage Range (Max. Rating)：1.9 V to 5.25 V (6.0V)；
? Supply Current：Typ. 9.5 μA；
? Standby Current：Typ. 0.01 μA；
? Output Voltage Range：1.2 V to 4.8 V (0.1 V step)；
? Output Voltage Accuracy：±1.0% (VSET≥ 1.8 V), ±18 mV (VSET< 1.8 V)；
? Output Noise：Typ. 8 μVrms (IOUT = 250 mA)；
? Ripple Rejection：Typ. 90 dB (f = 1 kHz),Typ. 85 dB (f = 10 kHz),Typ. 65 dB (f = 100 kHz)；
? Dropout Voltage：Typ. 0.17 V (IOUT = 400 mA, VSET = 2.8 V, RP122K)；
? Thermal Shutdown Protection：Detection Temp. Typ. 165°C；
? Inrush Current Limit：Typ. 250 mA for appr. 700 μs period after start-up；
? Ceramic Capacitor (CIN, COUT)：1.0 μF or more；
? Packages：WLCSP-4-P8Under Development, DFN(PLP)1010-4；

應(yīng)用 Application

? Mobile Phones and Tablets, Digital Cameras, Audio Devices, and Battery-powered Equipment
? RF Modules
? Clock Generator: VCO, PLL, etc.
? Noise-sensitive Devices: ADC, DAC

簡(jiǎn)介

RP122屬于集成電路（IC）的穩(wěn)壓器-線性。由制造生產(chǎn)的RP122穩(wěn)壓器 - 線性線性穩(wěn)壓器用于提供穩(wěn)定的輸出電壓，無(wú)論負(fù)載電流、輸入電壓或環(huán)境因素如何變化，這些輸出電壓通常都要保持不變。它們的工作原理要求輸入電壓維持在高于所需的輸出電壓，而且要超出某個(gè)最小量，并且在工作時(shí)會(huì)將輸入端的任何多余電壓轉(zhuǎn)換為熱量。對(duì)于大多數(shù)應(yīng)用而言，雖然這種穩(wěn)壓器的效率低于開關(guān)模式的穩(wěn)壓器，但它們通常更適合對(duì)噪聲高度敏感的應(yīng)用。