Power chip

3 to 5 Series Cells Li-Ion and Li-Phosphate Ultra-Low Power Stackable Battery Protector 20-TSSOP -40 to 85

discontinued

Power module isolated single output; input voltage: 12VDC; output voltage: 12VDC; output current (maximum value): 166mA; output power: 2W; isolation voltage 6000VDC

LM317-N LM317-N 3-Pin Adjustable Voltage Regulator

Input Voltage: 9-36Vdc\nOutput Voltage: 12V\nOutput Current: 1.66A\nOutput Power: 20W\nIsolation Voltage: 1500VDC\nConversion Efficiency: 91%\nFeature: Output Short Circuit Protection

DC-DC module, input range: 4.5V~9V, dual output: ±15V/3W

UA78M 500mA, 25V Linear Regulator

Low voltage monitor, detection voltage 1.9V

Microprocessor monitoring circuit + watchdog timer + manual reset, threshold voltage = 2.63V