BUY TS321ITL https://www.utsource.net/itm/p/8938948.html
operational amplifier TS321ITL SOT-153 marking K401
Description: Low-Power, Low-Dropout, CMOS Voltage Regulator
Features:
Low quiescent current: 20 μA (typical)
Low dropout voltage: 200 mV (typical)
Output voltage accuracy: ±2%
Output current: 500 mA
Over-temperature protection
Over-current protection
Short-circuit protection
Thermal shutdown
Output voltage range: 1.2V to 6.0V
Application:
Battery-powered systems
Portable electronics
Automotive applications
Telecom systems
Industrial systems
Consumer electronics
(For reference only)