Maker : Silicon Touch Technology
Part No. : PS223

Datasheet PDF : PS223.pdf
Cross Reference : PS223 Cross Reference
Buy Component : PS223 Find Stock and Price

Shortcut : PS22053  PS22053  PS222S  PS223  PS2231 

Product Information

www.DataSheet4U.com PS223 Version Issue Date File Name Total Pages : A.006 : 2009/05/19 : SP-PS223-A.006.doc : 11 4-Channel Secondary Monitoring IC With 4-Channel OCP And an Additional OTP 新竹市科學園區展業一路 9 號 7 樓之 1 SILICON TOUCH TECHNOLOGY INC. 9-7F-1, Prosperity Road I, Science Based Industrial Park, Hsin-Chu, Taiwan 300, R.O.C. Tel：886-3-5645656 Fax：886-3-5645626 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. www.DataSheet4U.com PS223 PS223 4-Channel Secondary Monitoring IC With 4-Channel OCP And an Additional OTP General Description PS223 is specially designed for switching power supply system. Four important functions of PS223 are the followings: 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 double 12V to protect our power supply and PC, FPO/ goes to high when one of these supply voltages exceeds their normal operation voltage range. OCP(Over Current Protection) monitors IS33, IS5, IS12A, IS12B input current sense. An adjustable over-current condition composed of Iref and “protection current range resistor” helps users design OCP easily. An additional OTP channel helps users monitor if there have any over temperature occur. Power good signal generating notifies 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 Over-temperature protection 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 75ms delay for UV/OC protection 38mS PSON/ control de-bounce 73uS de-bounce for noise immunity Wide power supply range Special care for AC power off Version：A.006 -1- 4-Channel Secondary Monitoring IC 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. www.DataSheet4U.com PS223 Block Diagram VS12A 171KΩ 12 UV 9.4KΩ Vref 12 OV 18KΩ Vref 38mS De-bounce delay H : 4mS L : 4.5uS 171KΩ 12 UV 9.4KΩ Vref 12 OV 18KΩ Vref 20KΩ FPO/ 73uS De-bounce S Q R 1MΩ VS12B Vcc PSON/ OTP 2.5V VS5 37.7KΩ 5 UV 8.3KΩ Vref 5 OV 12KΩ Vref H : 75mS L : 4.5uS delay 1 0 1.13V PGI 0.63V R Q S VS33 16.3KΩ 3.3 UV 8.9KΩ Vref 3.3 OV 12KΩ Vref 1.25V VCCI 1MΩ PGO delay 12 OC 73uS De-bounce H : 300mS L : 4.5uS IS12A Iref X 8 12 OC IS12B Iref X 8 delay H : 20mS L : 4.5uS Power On Reset POR Constant Current Source Iref RI 5 OC IS5 Iref X 8 Internal Power VCCI = 4V 3.3 OC IS33 Iref X 8 Band-Gap Reference Vref Clock Generator CLK GND 4-Channel Secondary Monitoring IC -2- Version：A.006 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. www.DataSheet4U.com PS223 Timing Chart Vcc PSON/ FPO/ PGI VS12A VS12B VS5 VS33 IS12A IS12B IS5 IS33 PGO Td1 Td2 AC turn on UVP/OVP/OCP protect Tb1 Td3 PSON/ turn on PSON/ turn off PSON/ turn on AC turn off VPGI 1.25V 1.13V 0.63V Td1 Td2 OVP OVP/UVP/OCP OVP 4-Channel Secondary Monitoring IC -3- Version：A.006 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. www.DataSheet4U.com PS223 Pin Descriptions Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PIN NAME PGI GND FPO/ PSON/ IS12A RI IS12B VS12B OTP IS5 IS33 VS12A VS33 VS5 VCC PGO Descriptions Power good input signal pin Ground Inverted fault protection output ,open drain output stage Remote ON/OFF control input pin 12V(1) over current protection input pin Current sense setting 12V(2) over current protection input pin 12V(2) over/under voltage protection input pin Over temperature protection input pin 5.0V over current protection input pin 3.3V over current protection input pin 12V(1) over/under voltage protection input pin 3.3V over/under voltage protection input pin 5.0V over/under volt...

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