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Mill-Max 0906 Spring-Loaded Pin with a Standard Tail

Supervisor Push-Pull, Totem Pole 1 Channel SOT-23-3 1.1V Threshold

Switching Voltage Regulators Low input voltage, 3.3-V output voltage, synchronous boost converter with integrated LDO 5.5 uA Iq (200nA in low power mode) and high efficiency at uA makes this very good for low power NiMH IoT projects.

1.6-V to 5.5-V, 40-mΩ, 2.5-A, low-IQ, priority power multiplexer

The BQ25172 is an integrated 800-mA linear charger for 1-cell to 6-cell NiMH batteries targeted at industrial and medical applications. The device has a single power output that charges the battery.

Single-cell 3V output voltage high efficient step-up converter #RegulatorSwitching

The DS2710 is ideal for in-system charging of single-cell nickel metal hydride (NiMH) cells for low-current portable applications. Inputs to the DS2710 include USB voltage sources and 5V regulated adapters. Temperature, voltage, and charge time are monitored to provide proper fast-charging control algorithms for single-cell NiMH or nickel cadmium (NiCd) batteries. The DS2710 includes battery tests to detect defective or inappropriate cells such as alkaline primary batteries.