TSM112CN STMicroelectronics

TSM112 3.3V 5V 12V HOUSEKEEPING IC OVER VOLTAGE PROTECTION FOR 3.3V 5V AND 12V WITHOUT EXTERNAL COM- PONENTS UNDER VOLTAGE PROTECTION FOR 3.3V 5V AND 12V WITHOUT EXTERNAL COM- PONENTS OVER VOLTAGE PROTECTION FOR -12V OR -5V WITH EXTERNAL COMPONENTS EXTERNALLY ADJUSTABLE UNDER VOLT- AGE BLANKING DURING POWER UP POWER GOOD INPUT/OUTPUT EXTERNALLY ADJUSTABLE PG DELAY N D FAULT OUTPUT DIP14 SO14 REMOTE OUTPUT (Plastic Package) (Plastic Micropackage) EXTERNALLY ADJUSTABLE REMOTE DELAY PRECISION VOLTAGE REFERENCE 2kV ESD PROTECTION PIN CONNECTIONS (top view) DESCRIPTION The TSM112 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). VS33 1 14 VCC TSM112 incorporates all the necessary functions for Housekeeping features which allow safe oper- ation in all conditions, and very high system inte- VS5 2 13 FAULT gration. VS12 3 12 PG TSM112 integrates a precise voltage reference. APPLICATION EP TPG 4 11 PC SMPS Triple Power Line Housekeeping PI 5 10 TREM IC (3.3V 5V 12V) ORDER CODE TUV 6 9 REM Package Part Temperature GND 7 8 VREF Marking Number Range ND TSM112CN 0 to 85C TSM112C TSM112CD 0 to 85C M112 N = Dual in Line Package (DIP) D = Small Outline Package (SO) - also available in Tape & Reel (DT) January 2001 1/7TSM112 PIN DESCRIPTION Name Pin Type Function Vcc 14 Power Supply Positive Power Supply Line Gnd 7 Power Supply Ground Line. 0V Reference For All Voltages 1) Vs12 3 Analog Input Over and Under voltage Sense Input Dedicated to the 12V Line 1) Vs5 2 Analog Input Over and Under voltage Sense Input Dedicated to the 5V Line 1) Vs33 1 Analog Input Over and Under voltage Sense Input Dedicated to the 3.3V Line Tuv 6 Timing Capacitor Adjustable Under voltage Blanking Delay at Power Up (Setting Capacitor) Fault 13 Open Collector Fault Output. Fault is high when Over or Under Voltage has been Detected PI 5 Analog Input Power Good Input. Detection of the Power Conditions PG 12 Open Collector Power Good Output. PG output is High when the Power Conditions are OK Tpg 11 Timing Capacitor Adjustable Power Good Delay (Setting Capacitor) REM 9 Logic Input Input Remote Control of the Complete System by the Motherboard (Controller). Remote is active high. Switch OFF/ON of the Power Supply. Reset of the Complete System after a FAULT Activation. Trem 10 Timing Capacitor Adjustable Remote Delay (Setting Capacitor). Vref 8 Voltage Reference 2.5V Reference for all Voltages EP 4 Analog Input Extra Protection Circuit. Can be used for -12V or -5V Over Voltage Protection. 1. Over and Under Voltage Inputs can go higher than Vcc within the allowed Max Rating range ABSOLUTE MAXIMUM RATINGS Symbol DC Supply Voltage Value Unit 1) Vcc 25 V DC Supply Voltage Iout Output Current Power Good 30 mA Io Output current for the Voltage reference 20 mA VFault Fault Ouput 5 V Top Operating Free Air Temperature Range -55 to 125 C Pd Power Dissipation 0.7 W Tstg Storage Temperature -55 to 150 C ESD Electrostatic Discharge 2 kV Tuv Adjustable Under voltage Blanking At Power UP 5 V EP Extra Protection 5 V PI Power Good Input 5 V PG Power Good Output 5 V Tpg Adjustable Power Good Delay 5 V REM Remote Control 5 V Trem Adjustable Remote Delay 5 V 1. All voltage values, except differential voltage are with respect to network ground terminal. OPERATING CONDITIONS Symbol Parameter Value Unit Vcc DC Supply Conditions 4.5 to 24 V Toper Operating Free Air Temperature Range 0 to 85 C 2/7