SMD TPS3809K33DBVR SOT-23 3-Pin power supply voltage monitor chip | eBay
PST9138NR Voltage Supervisor 3.8V SOT-153/SOT-25A/SOT23-5 marking 38 System Reset IC,Back-up power supply switching circuits|Welcome to Eric Online Store - Shenzhen ERIC Electronics Co., Ltd.
LogicNeed | SPX3819M5 3.3V 500mA Low-Noise LDO Voltage Regulator
APX803-23SAG-7 by Diodes Inc Voltage Supervisors | Avnet
SOT-23 Supervisory Circuits Datasheets – Mouser
onsemi Voltage Supervisor 3.11V max. 3-Pin SOT-23, MAX809TTRG- | RS
VOLTAGE SUPERVISOR SOT-23-3 EVALUATION BOARD | Microchip Technology