High Voltage Pushbutton On/Off Controller

The MAX16151 is a high voltage, pushbutton on/off controller with a switch debouncer and built-in latch. This device accepts a noisy input from a mechanical switch and produces a clean, latched output, as well as a one-shot interrupt output, in response to a switch closure exceeding the debounce period at active-low PBIN. A switch closure longer than the shutdown period at active-low PBIN results in a longer one-shot interrupt output. The MAX16151 family has two sets of devices: one in which a longer switch closure greater than the shutdown period deasserts the latched output, and another in which the latched output stays asserted. See Table 1 for more information.

The MAX16151 operates from a supply range of +5V to +36V and consumes less than 15µA of supply current to ensure minimal battery current in low-power applications. The robust switch input active-low (PBIN) handles ±60V levels and is ±10kV electrostatic discharge (ESD) protected for use in harsh industrial environments. The 3V regulated latched output can serve as a logic signal to control a pass transistor or voltage regulator. A separate active-low INT output provides a system interrupt whenever a valid pushbutton signal is detected. An asynchronous active-low CLR input allows an external signal to force the latched output to the OFF state. The MAX16151 operates over the -40°C to +125°C temperature range and is available in a 1.23mm x 0.83mm, 6-bump wafer-level package (WLP), and a 6-pin thin SOT23 package.

Applications

* Portable Instruments * Industrial Equipment * Desktop and Notebook Computers * Telecommunication and Servers

* Up to +36V Operating Range

* 3.0V Regulated Latched Output

* 10µA Standby Current (ISB)

* Debounces Noisy Switches

* 50ms and 2s Debounce Timing Options

* 8s and 16s Shutdown Periods

* One-shot INT Output on Each Switch Closure

* 32ms INT Duration

* Pushbutton Input Handle Up to ±60V

* ±10kV HMB ESD Protection

* 6-pin SOT23 and 1.23mm x 0.83mm, 6-bump WLP

* -40°C to +125°C Operating Temperature Range