A power supply supervisor (also known as a power supervisor or voltage supervisor) is an electronic component or integrated circuit (IC) that monitors the voltage levels of a power supply or power rail in a system. Its main function is to ensure that the power supply voltage remains within acceptable limits, providing reliable operation and protecting sensitive components from improper voltage conditions.
Part Number: EST7502C
Function: POWER SUPPLY SUPERVISOR
Package: DIP, SOP 16 Pin Type
The EST7502C is designed with a pulse-width-modulation control circuit and a complete power supervisor for use in the switched mode power supply . It contains various functions, like under voltage protection (UVP), over voltage protection (OVP), power good output (PG) and ON/OFF control (REM). UVP(Under voltage protection) function is for +3.3V, +5V, +12V outputs. OVP(Over voltage protection) function is for +3.3V, +5V, +12V and PT is for extra protection input. PG(Power good signal) is a safe operation signal to inform the external parts. REM(Remote on/off) is used to control the SMPS on/off. The REM control signal has the on/off transferred debounce–time.
1. 3-channel under voltage protection (UVP)
2. 3-channel over voltage protection (OVP)
3. 1-channel extra protection (PT)
4. 1-channel sense input to control the PG (SEN)
5. Remote on/off control function (REM)
6. Dual output for push-pull operation (OP1/OP2)
7. Soft start capability by external capacitor (SS)
8. VCC under voltage lockout
The power supply supervisor is particularly important in critical systems where voltage stability is crucial. It prevents a system from operating in an undefined state during power-up or in the event of power fluctuations. Additionally, it protects against the adverse effects of brownout conditions or unexpected voltage drops.