描述 Description

The MCP16411 is a Boost regulator from the MCP1641X family of low quiescentcurrent boost converters with integrated status indicators and wide inputvoltage range for a variety of battery powered applications. The regulator providesan automatic input-to-output voltage bypass operation which help in optimizingbattery utilization and achieving high efficiency while fresh batteries’nominal voltage is in the same range with the converter’s output value. The MCP16411 use an automatic switchover from PWM to PFM mode forlight load conditions, to maximize efficiency over a wide range of outputcurrent. The device can be powered by either single-cell, two-cell alkaline/NiMHbatteries or single-cell Li-Ion/Li-Polymer batteries.?A low-voltagedesigned architecture allows the regulator to start up without high inrushcurrent or output voltage overshoot from a low input voltage. The start-up voltageis easily programmed by a resistive divider connected to the UVLO pin. If theresistive divider is not used, the default start-up voltage will be 0.85V. The0.8V built-in UVLOSTOP helps prevent deep discharge of the alkaline battery,which may cause battery leakage. An open-drain Low Battery Output (LBO) pinwill warn the user to replace the battery if the input voltage ramps down tothe programmed UVLOSTART value.The MCP16411 includes an additional feature to a low-voltage boostconverter for safety: Over-temperature Output. Devices, such as personalcare products, Bluetooth headsets or toys, will benefit from combined Power Good and DieOvertemperature (PGT) output, which flags a warning signal when the outputlevel drops below 10% of its nominal value or the die temperature exceeds the factoryprogrammed temp (75°C default). Both functions are implemented in the device onthe same PGT pin.The device also incorporates an output auto-discharge feature. While inshutdown, the device will automatically discharge the output capacitor using aninternal switch.

特性 Features

Input Voltage Range: 0.8V (after start-up) to 5.25V
Low Device Quiescent Current: 4.5 μA Typically
Programmable Undervoltage Lockout (UVLO)
Automatic Input-to-Output Bypass Operation
Automatic PFM/PWM Operation
Power Good and Die Over Temperature Output
1A Typical Inductor Peak Current Limit
Up to 96% Efficiency
Adjustable Output Voltage Range
Programmable Low Battery Output
Shutdown State : Output Discharge
Internal Synchronous Rectifier
Internal Compensation
Inrush Current Limiting and Internal Soft Start
Anti-Ringing Control
Thermal Shutdown
Available Packages:10-lead MSOP
10-lead 3 mm x 3 mm TDFN

簡介

MCP16411屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關(guān)穩(wěn)壓器。由制造生產(chǎn)的MCP16411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。