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SC1417B - Step-up DC/DC Converter

General Description

The SC1417B is a fixed frequency, current mode step-up dc-dc converter.

It operates over a wide input supply range of 1.5V to 12V, making it suitable for battery input and TFT-LCD applications.

Key Features

  • a low battery detector and a 200mV reference circuit which remains active during shut down. The part consumes less than 50µA in shutdown. The low battery detect output goes low when the input battery voltage has dropped below a user programmable level. Pulse-by-pulse current limit and thermal shutdown protect the converter during load faults. The SC1417B is available in a MSOP-8 surface mount package. SC1417B Features ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ Operates from 1.5V to 12V supply voltage High effici.

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Datasheet Details

Part number SC1417B
Manufacturer SEMTECH
File Size 213.12 KB
Description Step-up DC/DC Converter
Datasheet download datasheet SC1417B Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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MicroPower, 620kHz PWM, www.DataSheet4U.com Step-up DC/DC Converter POWER MANAGEMENT Description The SC1417B is a fixed frequency, current mode step-up dc-dc converter. It operates over a wide input supply range of 1.5V to 12V, making it suitable for battery input and TFT-LCD applications. The 620kHz constant frequency oscillator minimizes the size of external components and allows simple filtering for noise sensitive environments. The integrated power NPN supports peak currents of up to 0.9A enabling the device to support 150mA at 15V from a 5V supply. The maximum switch duty cycle of 85% (typical) allows output to input voltage ratios as high as 6.5 in step-up configurations, thus allowing 2V to 12V boost operation.