General Description

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. See Table 1 for more information.

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.

Benefits and Features

•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 Currentwith Less Than 30mV Drop

•One-shot INT Output on Each Switch Closure

•8ms, 32ms, 64ms, and 128ms INT TimingOptions

•Active-Low or Active-High Pushbutton Input

•2mm x 2mm 6-pin μDFN

•Robust Features Increases End EquipmentReliability

•Pushbutton Input Handles up to ±60V

•±40kV Human-Body Model (HBM) ElectrostaticDischarge (ESD)

Applications

•Portable Medical Devices

•Portable Instruments

•Handheld Consumer Electronics

•Industrial Equipment

•Internet of Things (IoT) Devices

•Disposable Low-Power Electronics

•Asset Tracking Devices