SC122ULTRT集成電路（IC）的穩(wěn)壓器-DC-DC開關(guān)穩(wěn)壓器規(guī)格書PDF中文資料

SC122ULTRT屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關(guān)穩(wěn)壓器。由Semtech Corporation制造生產(chǎn)的SC122ULTRT穩(wěn)壓器 - DC-DC 開關(guān)穩(wěn)壓器DC-DC 開關(guān)穩(wěn)壓器 PMIC（電源管理集成電路）產(chǎn)品族中的產(chǎn)品是元器件級設(shè)備，用于需要穩(wěn)定 DC 輸入電壓和/或?qū)⑵滢D(zhuǎn)換為不同幅度的輸出電壓的應(yīng)用。這些器件與稱為“控制器”PMIC 的類似產(chǎn)品的區(qū)別在于集成了主開關(guān)元件，設(shè)備提供的電力會通過該元件。

Description

The SC122 is a high efficiency, low noise, synchronous step-up DC-DC converter. It produces a fixed 3.3V output from a single cell alkaline or NiMH battery. It features an internal 1.2A switch and synchronous rectifier to achieve high efficiency and to eliminate the need for an external Schottky diode.

Features

■ Input voltage — 0.7V to 1.6V

■ Minimum start-up voltage — 0.85V

■ Output voltage fixed at 3.3V

■ Peak input current limit — 350mA typically

■ Output current 95mA at VIN = 1.6V, 50mA at VIN = 0.9V

■ Efficiency up to 80

■ Internal synchronous rectifier

■ Switching frequency — 1.2MHz

■ Power save (voltage hysteretic) control

■ Anti-ringing circuit

■ Operating supply current (measured at OUT) — 40μA

■ No forward conduction path during shutdown

■ MLPD-UT-6 1.5 × 2.0 × 0.6 (mm) package

■ Lead-free and halogen-free

■ WEEE and RoHS compliant

Applications

■ Electric toothbrushes

■ Personal medical products

■ Single-cell alkaline, NiCd, or NiMH applications