MAX16169

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 PB_IN/PB_IN. A switch closure longer than the shutdown period at PB_IN/PB_IN 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 (PB_IN/PB_IN) 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