MIC2619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

MIC2619屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關(guān)穩(wěn)壓器。由微芯科技股份有限公司制造生產(chǎn)的MIC2619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。

General Description

The MIC2619 is a 1.2 MHz pulse width modulated

(PWM) step-up switching regulator that is optimized for

low power, high output voltage applications. With a

maximum output voltage of 35V and a switch current of

over 350 mA, the MIC2619 can easily supply most high

voltage bias applications, such as TV tuners.

The MIC2619 implements a constant frequency

1.2 MHz PWM current-mode control scheme. The high

frequency PWM operation saves board space by

reducing external component sizes. The additional

benefit of the constant frequency PWM control

scheme, as opposed to variable frequency control

schemes, is lower output noise and smaller input ripple

injected back to the battery source. The MIC2619 has

programmable overvoltage protection to ensure output

protection in case of fault condition.

The MIC2619 is available in a low profile Thin SOT-23

6-lead package. The MIC2619 has a junction

temperature range of –40°C to +125°C.

Features

? 2.8V to 6.5V Input Voltage

? 350 mA Switch Current

? Output Voltage up to 35V

? 1.2 MHz PWM Operation

? 1.265V Feedback Voltage

? Programmable Overvoltage Protection (OVP)

? <1 Line Regulation

? <1 μA Shutdown Current

? Overtemperature Protection

? Undervoltage Lock Out (UVLO)

? Low Profile Thin SOT-23-6 Package

? –40°C to +125°C Junction Temperature Range

Applications

? Bias Supply Applications:

- Tuner Varactor Bias

- High Voltage Bias Supplies

- Avalanche Photo Diode

- High Voltage Display Bias

? DSL/Broadband Applications

? Constant Current Power Supplies