TSM1121C

TSM1121 3.3V 5V 12V HOUSEKEEPING IC s s s s s s s s s s s Over voltage protection for 3.3V 5V and 12V without external components Under voltage protection for 3.3V 5V and 12V without external components Over voltage protection for -12V or -5V with external components Externally adjustable under voltage blanking during power up Power good input/output Externally adjustable pg delay Fault output Remote output Externally adjustable remote delay Precision voltage reference 2kV ESD protection N DIP14 (Plastic Package) D SO14 (Plastic Micropackage) PIN CONNECTIONS (top view) DESCRIPTION The TSM1121 integrated circuit incorporates all sensing circuitry to regulate and protect from over voltage and under voltage a multiple output power supply (3.3V, 5V and 12V). TSM1121 incorporates all the necessary functions for Housekeeping features which allow safe operation in all conditions, and very high system integration. TSM1121 integrates a precise voltage reference. VS33 VS5 VS12 EP PI 1 2 3 4 5 6 7 14 13 12 11 10 9 8 VCC FAULT PG TPG TREM REM VREF APPLICATION s PC SMPS triple power line housekeeping ic (3.3V 5V 12V) TUV GND ORDER CODE Part Number TSM1121CN TSM1121CD Temperatur e Range 0 to 85°C 0 to 85°C Package Marking N • • D TSM1121C M1121 Note: N = Dual in Line Package (DIP) D = Small Outline Package (SO) - also available in Tape & Reel (DT) May 2003 Revision A 1/11 TSM1121 1 PIN DESCRIPTION Name Vcc Gnd Vs12 Vs5 Vs33 Tuv Fault PI PG Tpg REM Trem Vref EP Pin Description Pin # 14 7 3 2 1 6 13 5 12 11 9 10 8 4 Type Power Supply Power Supply Analog Input Analog Input Analog Input Timing Capacitor Open Collector Analog Input Open Collector Timing Capacitor Logic Input Function Positive Power Supply Line Ground Line. 0V Reference For All Voltages Over and Under voltage Sense Input Dedicated to the 12V Line1 Over and Under voltage Sense Input Dedicated to the 5V Line1) Over and Under voltage Sense Input Dedicated to the 3.3V Line1) Adjustable Under voltage Blanking Delay at Power Up (Setting Capacitor) Fault Output. Fault is high when Over or Under Voltage has been Detected Power Good Input. Detection of the Power Conditions Power Good Output. PG output is High when the Power Conditions are OK Adjustable Power Good Delay (Setting Capacitor) Input Remote Control of the Complete System by the Motherboard (µController). Remote is active high. Switch OFF/ON of the Power Supply. Reset of the Complete System after a FAULT Activation. Adjustable Remote Delay (Setting Capacitor). 2.5V Reference for all Voltages Extra Protection Circuit. Can be used for -12V or -5V Over Voltage Protection. Timing Capacitor Voltage Reference Analog Input 1) Over and Under Voltage Inputs can go higher than Vcc within the allowed Max Rating range ABSOLUTE MAXIMUM RATINGS Symbol Vcc Iout Io VFault Pd Tstg ESD Tuv EP PI PG Tpg REM Trem 1 DC Supply Voltage DC Supply Voltage Output Current Power Good Output current for the Voltage reference Fault Ouput Power Dissipation Storage Temperature Electrostatic Discharge Adjustable Under voltage Blanking At Power UP Extra Protection Power Good Input Power Good Output Adjustable Power Good Delay Remote Control Adjustable Remote Delay Value 25 30 20 5 0.7 -55 to 150 2 5 5 5 5 5 5 5 Unit V mA mA V W °C kV V V V V V V V 1) All voltage values, except differential voltage are with respect to network ground terminal. OPERATING CONDITIONS Symbol Vcc Toper Parameter DC Supply Conditions Operating Free Air Temperature Range Value 4.5 to 24 0 to 85 Unit V °C 2/11 Electrical Characteristics 2 ELECTRICAL CHARACTERISTICS Parameter Total Supply Current Over Voltage and Under Voltage Protection Over Voltage Sense 3.3V Input can go higher than 3.8 Vcc Over Voltage Sense 5V Input can go higher than 5.8 Vcc Over Voltage Sense12V Input can go higher than 13.4 Vcc Under Voltage Sense 3.3V 2.1 Under Voltage Sense 5V 3.7 Under Voltage Sense 12V 9.2 Extra Over voltage Protection Threshold Fault Delay Before Latching Internally Fixed Delay Under Voltage Blanking During Power Up (Vcc rising) Blanking Threshold Cuv = 2.2µF Adjustable Blanking TSM1121 Tamb = 25°C and Vcc = 17V (unless otherwise specified) Symbol Icc Vov33 Vov5 Vov12 Vuv33 Vuv5 Vuv12 Vep Tfault Test Condition Min Typ 3 4 6.1 14.2 2.3 4 10 1.28 100 Max 5 4.2 6.4 15 2.5 4.3 10.8 Unit mA V V V V V V V µs Total Current Consumption Under Voltage Blanking During Power Up Tuv Thuv Vpgth 100 300 1.28 1.28 70 Collector Current = 15mA PG Output = 5V Load Capacitor = 100pF Load Capacitor = 100pF Load Capacitor Cpg=2.2µF 1 1 300 1.28 1 1 0.4 1 500 ms V V mV V µA µs µs ms V V µA Power Good (PG) Power Good Voltage Threshold Power Good Voltage Threshold HysterVpghyst esis Low Output Open Collector Saturation Vpgol Voltage High Output Open Collector Leakage Ipgoh Current Tpgr Power Good Output Rise Time Tpgf Power Good Output Fall Time Tpg Power Good Adjustable Delay PIth Power Input Detection Threshold 100 500 Fault Vfaultol Ifaultoh Fault Output Saturation Voltage Level Fault Output Leakage Current Level IFault = 1mA Vfault = 5V Remote Control (REM) Vremth Vremih Iremil Trem1 Trem2 Remote ON/OFF Input Voltage Threshold High Input Remote Voltage Low Input Remote Saturation Current Remote Adjustable Delay ON to OFF Load Capacitor Crem=0.1µF Remote Adjustable Delay OFF to ON Load Capacitor Crem=0.1µF Internal Voltage Reference Line regulation Line regulation Io = 0mA Io = 0mA 4.5V