STM6600AS54DM6E データシートの表示（PDF） - STMicroelectronics

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STM6600AS54DM6E

Smart push-button on/off controller with Smart Reset™ and power-on lockout

STMicroelectronics 

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 1 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. (see

Table 8 and Table 9 for more information).

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 STM6601 the processor has to confirm the proper power-on during the fixed time period, tON_BLANK. This failsafe

feature prevents the user from turning on the system when there is a faulty power switch or an unresponsive

microprocessor.

Doc ID 15453 Rev 7

5/51

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