250mA Single LDO with Low IQ, Low Noise and High PSRR LDO

The ISL9021 is a single LDO providing high performance low input voltage, high PSRR. It delivers guaranteed continuous 250mA load current and is stable with 1μF to 4.7μF of output capacitance (±30) with an ESR range of 5mΩ to 400mΩ.

Features

? High Performance LDO with 250mA guaranteed continuous output current

? Input Voltage Range: 1.5V to 5.5V

? Output Voltage Range: 0.9V to 3.3V

? High PSRR: 75dB @ 10kHz, 50dB @ 1MHz

? Low Quiescent Current: 35μA

? Dropout Voltage: <150mV @ 250mA

? Stable with 1μF to 4.7μF Output Capacitance (±30) with an ESR range of 5mΩ to 400mΩ

? ±1.8 Output Accuracy Over-Temperature/Load/Line

? Soft-start Limits Input Current Surge During Enable

? Current Limit and Overheat Protection

? -40°C to +85°C Operating Temperature Range

? Available in 1.155mmx0.975mm 4-bump WLCSP Package and 1.6mmx1.6mm 6 Ld μTDFN

? Pb-free (RoHS compliant)

Applications

? PDAs, Cell Phones and Smart Phones

? Portable Instruments, MP3 Players

? Handheld Devices including Medical Handhelds

ISL9021屬于集成電路（IC） > 線性 + 開關(guān)穩(wěn)壓器。瑞薩科技有限公司制造生產(chǎn)的ISL9021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。