PS236 Datasheet, PDF (2/13 Pages) Silicon Touch Technology Inc. – 3-Channel Secondary Monitoring IC With an Additional OCP Channel

PS236
PS236
3-Channel Secondary Monitoring IC
With an Additional OCP Channel
General Description
PS236 is specially designed for switching power supply system. Four important
functions of PS236 are the following: over-voltage protection, over-current protection,
under-voltage protection and power good signal generating.
OVP/UVP (Over-Voltage/Under-Voltage Protection) monitors 3.3V, 5V and 13V to
protect our power supply. FPO/ goes to high when one of these supply voltages
exceeds their normal operation voltage range.
OCP (Over Current Protection) monitors IS33, IS5, IS13 input current sense.
Composed of “Iref“ and “protection current range resistor”, an adjustable over-current
condition helps users design OCP easily.
An additional OCP channel helps users monitor additional VSX rail output current.
Power good signal generating can notify personal computer when power supply is
ready or power supply is going to shutdown, therefore it can provide a reliable power
supply environment.
Features
• Over/Under-voltage protection and lock out
• Over-current protection and lock out
• Fault protection output with open drain output stage
• Open drain power good output signal for power good input
• Built-in 300mS power good delay
• AC on 3mS delay for UV/OC protection
• 17uS de-bounce for noise immunity
• Wide power supply range (4.2V~18V)
• Special care for AC power off
3-Channel Secondary Monitoring IC
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Version：A.001