nanoPower Pushbutton On/Off Controller and Battery Freshness Seal

The MAX16150 is an extremely low-power, 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 shutdown period at active-low PBIN results in a longer one-shot interrupt output. The MAX16150 family has two set 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 MAX16150 operates from a supply range of +1.3V to +5.5V and consumes less than 20nA of supply current to ensure minimal battery drain in low-power applications, as well as to allow use as a battery "freshness seal". The robust switch input (active-low PBIN) accepts up to ±60V levels and is ±15kV ESD-protected for use in harsh environments. The latched output can serve as a logic signal to control a regulator, or it can serve as a switch to connect the load directly to the power supply when load current is low, providing 20mA of output current with less than 100mV voltage drop. 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 MAX16150 operates over the -40°C to +125°C temperature range and is available in a 1mm x 1.5mm, 6-bump wafer-level package (WLP) and a 6-pin thin SOT23 package.

Applications

* Disposable Low-Power Electronics

* Handheld Consumer Electronics

* Industrial Equipment

* Portable Instruments

* Low Power

* 20nA (Max) Standby Current

* Debounces Noisy Switches

* 50ms and 2s Debounce Timing Options

* 8s and 16s Shutdown Timing Periods

* Latched Output Supplies 20mA Load Current With Less Than 100mV Drop

* One-Shot Active-Low INT Output on Each Switch Closure

* 8ms, 32ms, 64ms, and 128ms Active-Low INT Timing Options

* Pushbutton Input Handles up to ±60V

* ±15kV HBM ESD Protection

* 6-pin SOT23 and 1mm x 1.5mm, 6-bump WLP