TS831-5IZT

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1/11 ■ ULTRA LOW POWER CONSUMPTION : 12µA 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 ■ FAST RESPONSE TIME : 20µs FOR A 10mV OVERDRIVE ■ 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 output. The threshold voltage is set at 4.33V for TS831-5, 4.5V for TS831-4 and 2.71V for TS831-3 by internal thermally matched resistors. The comparator exhibits a 20µs response (with 10mV overdrive) and has an open drain output active when input voltage is lower than the threshold. An internal hysteresis, 100mV for TS831-4 / TS831-5 and 60mV for TS831-3, increases the comparator’s noise margin and prevents false reset operation. APPLICATION ■ Power-on reset generator for microcontroller ■ Power failure detector ORDER CODE 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) PIN CONNECTIONS (top view) Part Number Temperature Range Package D Z P TS831-5I -40, +125°C • • • TS831-4I • • • TS831-3I • • • D SO8 (Plastic Micropackage) P TSSOP8 (Thin Shrink Small Outline Package) Z TO92 (Plastic Package) TO92 SO8-TSSOP8 TS831 MICROPOWER VOLTAGE SUPERVISOR RESET ACTIVE LOW November 2001

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TS831 2/11 ABSOLUTE MAXIMUM RATINGS OPERATING CONDITIONS TS831-5 ELECTRICAL CHARACTERISTICS Tamb = 25°C (unless otherwise specified) Symbol Parameter Value Unit VCC Supply Voltage 1) 7 V VOUT Output Voltage -0.3 to Vcc + 0.3 V IOUT Output Sink Current TS831-5 and TS831-4 TS831-3 20 5 mA PD Power Dissipation 2) TO92 SO8 TSSOP8 625 700 625 mW IF Clamp Diode Forward Current, pin 1 to pin 2 3) 100 mA TSTG Storage Temperature -65 to +150 °C 1. All voltages values, except differential voltage are with respect to network ground terminal. 2. Tj = 150°C, Tamb = 25 oC with Rthja = 200oC/W for TO-92 package Rthja = 175oC/W for SO8 package Rthja = 200oC/W for TSSOP8 package 3. Maximum package power dissipation limits must be observed. Symbol Parameter Value Unit VCC Supply Voltage 1 to 5.5 V TOPER Operating Free Air Temperature Range -40 to +125 °C Symbol Parameter Min. Typ. Max. Unit VTHI Threshold Voltage with VCC Increasing -40°C ≤ Tamb ≤ +85°C -40°C ≤ Tamb ≤ +125°C 4.11 4.11 4.33 4.46 4.50 V VTHD Threshold Voltage with VCC Decreasing -40°C ≤ Tamb ≤ +85°C -40°C ≤ Tamb ≤ +125°C 4.10 4.06 4.21 4.46 4.46 V VHYS Hysteresis Voltage 50 100 200 mV ICC Current Consumption VCC = 5V 12 µA VOL Low Level Output Voltage VCC = 4V, IOL = 8mA -40°C ≤ Tamb ≤ +85°C -40°C ≤ Tamb ≤ +125°C 450 800 1000 1300 mV IOH High Level Output Current VCC = 5V -40°C ≤ Tamb ≤ +125°C 2 100 1000 nA TPHL Response Time High to Low RL = 10kΩ, CL = 15pF, VCC = VTHD -10mV 20 µs Note : Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation and by design.

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TS831 3/11 TS831-4 ELECTRICAL CHARACTERISTICS Tamb = 25°C (unless otherwise specified) TS831-3 ELECTRICAL CHARACTERISTICS Tamb = 25°C (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit VTHI Threshold Voltage with VCC Increasing -40°C ≤ Tamb ≤ +85°C -40°C ≤ Tamb ≤ +125°C 4.18 4.18 4.50 4.66 4.70 V VTHD Threshold Voltage with VCC Decreasing -40°C ≤ Tamb ≤ +85°C -40°C ≤ Tamb ≤ +125°C 4.17 4.13 4.40 4.66 4.66 V VHYS Hysteresis Voltage 50 100 200 mV ICC Current Consumption VCC = 5V 12 µA VOL Low Level Output Voltage VCC = 4V, IOL = 8mA -40°C ≤ Tamb ≤ +85°C -40°C ≤ Tamb ≤ +125°C 450 800 1000 1300 mV IOH High Level Output Current VCC = 5V -40°C ≤ Tamb ≤ +125°C 2 100 1000 nA TPHL Response Time High to Low RL = 10kΩ, CL = 15pF, VCC = VTHD -10mV 20 µs Note : Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation and by design. Symbol Parameter Min. Typ. Max. Unit VTHI Threshold Voltage with VCC Increasing -40°C ≤ Tamb ≤ +125°C 2.55 2.71 2.8 V VTHD Threshold Voltage with VCC Decreasing -40°C ≤ Tamb ≤ +125°C 2.55 2.65 2.8 V VHYS Hysteresis Voltage 30 60 100 mV ICC Current Consumption VCC = 3V 12 µA VOL Low Level Output Voltage VCC = 2.4V, IOL = 1mA -40°C ≤ Tamb ≤ +125°C 140 400 500 mV IOH High Level Output Current VCC = 3V -40°C ≤ Tamb ≤ +125°C 2 100 1000 nA TPHL Response Time High to Low RL = 10kΩ, CL = 15pF, VCC = VTHD -10mV 20 µs Note : Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation and by design.

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TS831 4/11 EQUIVALENT SCHEMATIC DIAGRAM TIMING DIAGRAM 1.2V Vref OUTPUT INPUT (Vcc) GND

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TS831 5/11 Output voltage versus Vcc Output voltage versus Vcc Output voltage versus Vcc Reset output voltage versus Vcc Reset output voltage versus Vcc Reset output voltage versus Vcc 0 1 2 3 4 5 0 1 2 3 4 5 TS831- 3 RL = 10 kΩ T=25°C O u tp u t V o lt a g e ( V ) Vcc (V) 0 1 2 3 4 5 0 1 2 3 4 5 TS831- 4 RL = 10 kΩ T=25°C O u tp u t V o lt a g e ( V ) Vcc (V) 0 1 2 3 4 5 0 1 2 3 4 5 TS831- 5 RL = 10 kΩ T=25°C O u tp u t V o lt a g e ( V ) Vcc (V) 2.600 2.625 2.650 2.675 2.700 2.725 2.750 0 1 2 3 4 5 TS831- 3 RL = 10 kΩ T=25°C O u tp u t V o lt a g e ( V ) Vcc (V) 4.40 4.45 4.50 4.55 4.60 0 1 2 3 4 5 TS831- 4 RL = 10 kΩ T=25°C O u tp u t V o lt a g e ( V ) Vcc (V) 4.20 4.25 4.30 4.35 4.40 0 1 2 3 4 5 TS831- 5 RL = 10 kΩ T=25°C O u tp u t V o lt a g e ( V ) Vcc (V)

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TS831 6/11 VTHI versus temperature Hysteresis voltage versus temperature Supply current vs Vcc & temperature VTHD versus temperature Supply current versus temperature Voltage output low vs Isink & temperature -40 -20 0 20 40 60 80 100 120 4.40 4.45 4.50 4.55 4.60 TS831- 4 VTHI mi n VTHI ma x Temperature (°C) V T H I ( V ) -40 -20 0 20 40 60 80 100 120 60 80 100 120 140 160 TS831- 4 No load H y s te re s is ( m V ) Temperature (°C) 0 1 2 3 4 5 0 2 4 6 8 10 12 +125°C -40°C +25°C TS831- 3 No load S u p p ly c u rr e n t (µ A ) Vcc (V) -40 -20 0 20 40 60 80 100 120 4.32 4.34 4.36 4.38 4.40 4.42 4.44 TS831-4 V THD min V THD max V T H D ( V ) Temperature (°C) -40 -20 0 20 40 60 80 100 120 8.0 8.5 9.0 9.5 10.0 TS831- 4 Vcc=5V No load Icc min Icc max S u p p ly c u rr e n t (µ A ) Temperature (°C) 0 1 2 3 4 5 0.0 0.5 1.0 1.5 2.0 - 40°C +25°C +85°C +125°C TS831- 3 Input voltage=2.4 V V O L ( V ) I SINK (mA)

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TS831 7/11 Supply current vs Vcc & temperature Supply current vs Vcc & temperature Clamp diode forward current versus voltage Voltage output low vs Isink & temperature Voltage output low vs Isink & temperature Response time 0 1 2 3 4 5 0 2 4 6 8 10 +125°C +85°C +25°C - 40°C TS831- 4 No load S u p p ly c u rr e n t (µ A ) Vcc (V) 0 1 2 3 4 5 0 2 4 6 8 10 +125°C +85°C +25°C- 40°C TS831- 5 No load S u p p ly c u rr e n t (µ A ) Vcc (V) 0.0 0.5 1.0 1.5 0 20 40 60 80 100 Vcc=0 V T=25°C F o rw a rd c u rr e n t (m A ) Forward voltage (V) 0 5 10 15 20 0 1 2 3 4 +125°C +85°C +25°C - 40°C TS831- 4 Vcc= 4 V V O L ( V ) I SINK (mA) 0 5 10 15 20 0 1 2 3 4 - 40°C +25°C +85°C +125°C TS831- 5 Vcc=4 V V O L ( V ) I SINK (mA) 0 20 40 60 80 Response time 4 V TS831- 4 RL = 10 kΩ T=25°C 0 V 4 V 5 V 5 V Reset output Vcc Time (µs)

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TS831 8/11 Basic configuration Power Supply Microprocessor circuitResetTS831 in G n d Pull up resistor Special remarks * Some microprocessor may integrate the pull up resistor. * For the pull up resistor choice, please use the graphs nammed "Voltage output low vs Isink & temperature" depending on TS831 versions.

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TS831 9/11 PACKAGE MECHANICAL DATA 8 PINS - PLASTIC MICROPACKAGE (SO) Dim. Millimeters Inches Min. Typ. Max. Min. Typ. Max. A 1.75 0.069 a1 0.1 0.25 0.004 0.010 a2 1.65 0.065 a3 0.65 0.85 0.026 0.033 b 0.35 0.48 0.014 0.019 b1 0.19 0.25 0.007 0.010 C 0.25 0.5 0.010 0.020 c1 45° (typ.) D 4.8 5.0 0.189 0.197 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 3.81 0.150 F 3.8 4.0 0.150 0.157 L 0.4 1.27 0.016 0.050 M 0.6 0.024 S 8° (max.)