nanoPower Pushbutton On/Off Controller and Battery Freshness Seal

The MAX16169 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, and a one-shot interrupt output, in response to a switch closure exceeding the debounce period at PBIN/PBIN. A switch closure longer than the shutdown period at PBIN/PBIN results in a longer one-shot interrupt output. The MAX16169 family has two sets of devices, one in which a more extended switch closure greater than the shutdown period deasserts the latched output, and another in which the latched output stays asserted.

The MAX16169 operates from a supply range of +1.3V to +5.5V and consumes less than 40nA of supply current to ensure minimal battery drain in low-power applications, and to allow use as a battery "freshness seal". The robust switch input (PBIN/PBIN) accepts up to ±60V levels and is ±40kV ESD-protected for harsh environments. The latched output can serve as a logic signal to control a regulator or as a switch to connect the load directly to the power supply when the load current is low, providing 200mA of output current with less than 30mV voltage drop. A separate INT output provides a system interrupt whenever a valid pushbutton signal is detected. An asynchronous CLR input allows an external signal to force the latched output to the off state.

The MAX16169 operates over the -40°C to +125°C temperature range and is available in a 2mm x 2mm 6-pin micro dual-flat no-leads (μDFN) package.

APPLICATIONS

* Portable Medical Devices

* Portable Instruments

* Handheld Consumer Electronics

* Industrial Equipment

* Internet of Things (IoT) Devices

* Disposable Low-Power Electronics

* Asset Tracking Devices

* Ultra Low Current Saves Power

* 40nA (max) Standby Current (ISB)

* VCC Range: 1.3V to 5.5V

* Debounces Noisy Switches

* 50ms and 2s Debounce Timing Options

* 8s and 16s Shutdown Timing Periods

* Flexible Configurations Provide Design Options

* Latched Output Supplies 200mA Load Current with Less Than 30mV Drop

* One-shot INT Output on Each Switch Closure