BUY BQ4287MT-SB2 https://www.utsource.net/itm/p/4293817.html
Real-Time Clock Module With NVRAM Control
The BQ4287MT-SB2 is a 20-pin DIP (Dual Inline Package) integrated circuit (IC) manufactured by Texas Instruments. It is a low-power, low-voltage, dual-channel, charge-pump voltage converter designed to generate a regulated negative voltage from a positive input voltage. Description: The BQ4287MT-SB2 is a low-power, low-voltage, dual-channel, charge-pump voltage converter designed to generate a regulated negative voltage from a positive input voltage. It is capable of supplying up to 50mA of output current, and is designed to operate from a single +2.7V to +5.5V input voltage. It features a low quiescent current of only 1μA, and is capable of operating at frequencies up to 1MHz. Features: Low-power, low-voltage dual-channel charge-pump voltage converter Generates a regulated negative voltage from a positive input voltage Capable of supplying up to 50mA of output current Designed to operate from a single +2.7V to +5.5V input voltage Low quiescent current of only 1μA Capable of operating at frequencies up to 1MHz Applications: The BQ4287MT-SB2 is suitable for a wide range of applications, including: Battery-powered systems Portable electronics Automotive electronics Industrial control systems Medical electronics Telecommunications systems (For reference only)