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New smart pushbutton “On/Off” controller chips from STMicroelectronics protect and improve performance of battery-powered products
The STM6600 and STM6601 are controllers that protect against the hazards faced by battery-operated devices. They enable and disable power for the application depending on push-button states, signals from the processor and battery voltage.
If the battery is excessively discharged or a fault is detected in the power supply, the IC blocks power-up. It also implements smart-reset capabilities to enable users to safety recover devices that have frozen or crashed during normal operation.
Key Features
• Operating voltage: 1.6 to 5.5 V
• Low stand-by current: 1 µA
• Adjustable Smart-Reset™ assertion delay time driven by external capacitor
• Secure startup, interrupt, smart reset or power down driven by push button
• Debounced push-button (/PB) and smart-reset (/SR) inputs
• Battery monitoring feature prevents over-discharging
• Precise 1,5 V voltage reference with 1% accuracy
• Industrial operating temperature: -40 to +85C
• Available in TDFN12 (2x3 mm) package
Applications
• Portable devices
• Terminals
• Audio and video players
• PDAs, palmtops, organizers
• Cell Phones & Smart Phones
These new chips will enable next-generation mobile products to offer easy-to-use “power-up”, “power-down” and “unfreeze/reset” functions that will prevent damage to the end-user product. In addition, these single-chip turn-key solutions significantly ease the design task for leading mobile and portable consumer manufacturers, enabling the replacement of “tens” of discrete electronic components in product design.
For more information, or details on the full range of STMicroelectronics products available from Anglia, please email info@anglia.com
This news article was originally published in July 2011.