Description

The SC1408IS.TR is an IC chip under the product category of electronic components. It is a low voltage boost controller that operates from a 1.8V to 16.5V input range and can provide output voltage up to 10W. The controller can be turned off using a shutdown pin, reducing supply current to less than 2µA typical. It can be preset to 5V or is adjustable from 3V to 16.5V with a resistor divider. The SC1408IS.TR changes frequency in low load conditions to improve efficiency. This chip was designed specifically for two cell Alkaline or single cell Lithium Ion battery applications. With the proper external components, it can be used as a boost converter or a buck/boost converter.

Specifications and Features

• Input range: 1.8V to 16.5V
• 10W maximum output power
• Output voltage: preset 5V or adjustable from 3V to 16.5V
• Switching frequency: up to 300kHz
• Shutdown current: 10µA maximum
• Industrial temperature range
• Package options: SO-8 or MSOP-8

Application Scenarios

• PDA power supplies
• Battery-powered applications
• Positive LCD bias generator
• Portable communications (cellular phones)
• Peripheral card supplies
• Industrial power supplies

Comparison

• Flexible output voltage options
• High maximum output power
• Low shutdown current

• May require external components for certain applications
• Limited to specific battery applications