STM6600, STM6601
1
Description
Description
The STM6600-01 devices monitor the state of connected push-button(s) as well as
sufficient supply voltage. An enable output controls power for the application through the
MOSFET transistor, DC-DC converter, regulator, etc. If the supply voltage is above a
precise voltage threshold, the enable output can be asserted by a simple press of the
button. Factory-selectable supply voltage thresholds are determined by highly accurate and
temperature-compensated references. An interrupt is asserted by pressing the push-button
during normal operation and can be used to request a system power-down. The interrupt is
also asserted if undervoltage is detected. By a long push of one button (PB) or two buttons
(PB and SR) either a reset is asserted or power for the application is disabled depending on
the option used.
The device also offers additional features such as precise 1.5 V voltage reference with very
tight accuracy of 1%, separate output indicating undervoltage detection and separate output
for distinguishing between interrupt by push-button or undervoltage.
The device consumes very low current of 6 µA during normal operation and only 0.6 µA
current during standby.
The STM6600-01 is available in the TDFN12 package and is offered in several options
among features such as selectable threshold, hysteresis, timeouts, output types, etc.
Figure 1. Application hookup
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1. A resistor is required for open drain output type only. A 10 kΩ pull-up is sufficient in most applications.
2. Capacitor CREF is mandatory on VREF output (even if VREF is not used). Capacitor value of 1 µF is recommended.
3.
For the
feature
STM6601 the processor has to confirm the proper power-on during
prevents the user from turning on the system when there is a faulty
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microprocessor.
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