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STM6620SBAQT

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Smart push-button on/off controller

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Parameter NameParameter Value
Supply Voltage Min Volt2.2
Supply Voltage Max Volt5.5
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
ROHS Compliance GradeEcopack3
GradeIndustrial
Package NameVFQFPN 10 1.8X1.4X0.5 PULLIN PIT

The Smart Reset™ devices provide a useful feature that ensures inadvertent short reset push-button closures do not cause system resets. This is done by implementing an extended Smart Reset™ input delay time (Tr) and combined push-button inputs, which together ensure a safe reset and eliminate the need for a specific dedicated reset button.


The STM6620S has two combined delayed Smart Reset™ inputs (RST0 and RST1) with a preset, delayed, Smart Reset™ setup time (Tr). The reset output is asserted after both the Smart Reset™ inputs are in a predefined state during the Tr delay time. The reset outputs then remain active during Td. Two outputs are available, one is active low (nSR0) while the other is active high (SR0). SR0 is capable of driving en external PMOS to connect or disconnect the battery.


The STM6620S also offers two discharge paths to ensure a correct system setup before the complete restart of a smartphone. A dedicated pin is able to detect if a voltage is present on the USB connector, which means the charger is plugged in.


This device fully operates over the broad supply voltage range of 2.2 V to 5.5 V and over the industrial temperature range -40 °C to 85 °C.

Key features
  • Operating voltage: 2.2 V to 5.5 V
  • Low supply current:10 μA max.
  • Deep sleep mode: 5 μA max.
  • Dual Smart Reset™ push-button inputs with fixed extended setup delay (Tr)
  • Power-on reset
  • Two discharge paths
  • Charger insertion detection
  • Dual outputs: SR0 active high and nSR0 active low
  • Operating temperature: -40 °C to 85 °C
  • QFN10 package 1.8x1.4x0.5 mm
  • Ecopack®3 (RoHS compliant, Halogen-free)