The ISL9021A is a single LDO, which provides high performance, low input voltage and 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 400m.

The input voltage range for the ISL9021A is between 1.5V to 5.5V and the output voltage comes in many fixed voltage options with ±1.8 accuracy over-temperature, line and load ranges. The ISL9021A has typical PSRR of 75dB @ 10kHz and 50dB @ 1MHz.

Features

? High performance LDO with 250mA guaranteed continuous output current

? Input voltage range: 1.5V to 5.5V

? Output voltage range: 1.2V 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 400m?

? ±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 0.975mmx1.155mm 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 handheld

ISL9021AIRUYZ-T7A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ISL9021AIRUYZ-T7A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。