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STMicroelectronics STM6600/STM6601 Smart Push-Button On / Off Controllers with Smart Reset™ and power-on lockout protects against the hazards faced by battery-operated devices. These types of devices include smartphones, digital cameras, and media players. The STM6600/STM6601 controllers 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. These devices also implement smart-reset capabilities to enable users to safely recover gadgets that have frozen or crashed during normal operation. The STM6600/STM6601 controllers connect directly to the power and reset buttons and have circuitry to prevent external interference such as electrostatic discharges. These devices feature a very low current consumption of 6µA in normal operation and only 1µA during standby, resulting in virtually no battery drain when the application is turned off.
Features
- Operating voltage 1.6V to 5.5V
- Low standby current of 1μA
- Adjustable smart reset assertion delay time driven by external CSRD
- Power-up duration determined primarily by push-button press (STM6600) or by fixed time period, tON_BLANK (STM6601)
- Debounced PB and SR inputs
- PB and SR ESD inputs withstand voltage up to ±15kV (air discharge) ±8kV (contact discharge)
- Active high or active low enable output option (EN or EN) provides control of MOSFET, DC-DC converter, regulator, etc.
- Secure startup, interrupt, smart reset or power down driven by push-button
- Precise 1.5V voltage reference with 1% accuracy
Block Diagram
Application Circuit
more information: https://www.st.com/en/reset-and-supervisor-ics/stm6600.html
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