TS831-4IDT STMicroelectronics

TS831 MICROPOWER VOLTAGE SUPERVISOR RESET ACTIVE LOW ULTRA LOW POWER CONSUMPTION : 12A maximum PRECISION RESET THRESHOLD THRESHOLD VOLTAGE: 4.33V typ. FOR TS831-5 4.50V typ. FOR TS831-4 2.71V typ. FOR TS831-3 GUARANTEED RESET OPERATION FOR VCC DOWN TO 1V OPEN DRAIN OUTPUT COMPARATOR D Z FAST RESPONSE TIME : 20s FOR A 10mV SO8 TO92 OVERDRIVE (Plastic Micropackage) (Plastic Package) INTERNAL BUILT-IN HYSTERESIS PIN TO PIN COMPATIBLE WITH MC33064 AND MC33164 DESCRIPTION The TS831 is an ultra low power integrated circuit incorporating a high stability band-gap voltage reference and a comparator with an open drain P output. TSSOP8 The threshold voltage is set at 4.33V for TS831-5, (Thin Shrink Small Outline Package) 4.5V for TS831-4 and 2.71V for TS831-3 by internal thermally matched resistors. The comparator exhibits a 20s response (with PIN CONNECTIONS (top view) 10mV overdrive) and has an open drain output active when input voltage is lower than the threshold. An internal hysteresis, 100mV for SO8-TSSOP8 TS831-4 / TS831-5 and 60mV for TS831-3, increases the comparators noise margin and prevents false reset operation. APPLICATION Power-on reset generator for microcontroller Power failure detector ORDER CODE TO92 Package Part Number Temperature Range DZ P TS831-5I TS831-4I -40, +125C TS831-3I Z= TO92 Plastic package D = Small Outline Package (SO) - also available in Tape & Reel (DT) P = Thin Shrink Small Outline Package (TSSOP) - only available in Tape & Reel (PT) November 2001 1/11TS831 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit 1) V 7V CC Supply Voltage V Output Voltage -0.3 to V + 0.3 V OUT cc Output Sink Current TS831-5 and TS831-4 20 I mA OUT TS831-3 5 2) P 625 Power Dissipation TO92 D 700 mW SO8 625 TSSOP8 3) I 100 mA Clamp Diode Forward Current, pin 1 to pin 2 F T Storage Temperature -65 to +150 C STG 1. All voltages values, except differential voltage are with respect to network ground terminal. o o 2. T = 150C, T = 25 C with Rthja = 200 C/W for TO-92 package amb j o Rthja = 175 C/W for SO8 package o Rthja = 200 C/W for TSSOP8 package 3. Maximum package power dissipation limits must be observed. OPERATING CONDITIONS Symbol Parameter Value Unit V Supply Voltage 1 to 5.5 V CC T Operating Free Air Temperature Range -40 to +125 C OPER TS831-5 ELECTRICAL CHARACTERISTICS Tamb = 25C (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit Threshold Voltage with V Increasing 4.33 CC V -40C Tamb +85C 4.11 4.46 V THI -40C Tamb +125C 4.11 4.50 Threshold Voltage with V Decreasing 4.21 CC V 4.10 4.46 V -40C Tamb +85C THD 4.06 4.46 -40C Tamb +125C V Hysteresis Voltage 50 100 200 mV HYS I Current Consumption V = 5V 12 A CC CC Low Level Output Voltage V = 4V, I = 8mA 450 800 CC OL V 1000 mV -40C Tamb +85C OL 1300 -40C Tamb +125C High Level Output Current V = 5V 2 100 CC I nA OH -40C Tamb +125C 1000 Response Time High to Low T 20 s PHL R = 10k, C = 15pF, V = V -10mV L L CC THD Note : Limits are 100% production tested at 25C. Limits over temperature are guaranteed through correlation and by design. 2/11