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| TS831 MICROPOWER VOLTAGE SUPERVISOR RESET ACTIVE LOW s ULTRA LOW POWER CONSUMPTION : s PRECISION RESET THRESHOLD s 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 : 20s FOR A 10mV OVERDRIVE INTERNAL BUILT-IN HYSTERESIS PIN TO PIN COMPATIBLE WITH MC33064 AND MC33164 12A maximum s s s s s D DIP-8 (Plastic Micropackage) Z TO-92 (Plastic Package) DESCRIPTION The TS831 ultra low power integrated circuit incorporates a high stability band-gap voltage reference and a comparator with 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 resistances. The comparator exhibits a 20s 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 P TSSOP-8 (Thin Shrink Small Outline Package) PIN CONNECTIONS (top view) SO8-TSSOP8 s Power-on reset generator for microcontroller s Power failure detector ORDER CODE Package Part Number TS831-5I TS831-4I 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) TO-92 P * * * Temperature Range D -40, +125C * * * Z * * * March 2000 1/11 TS831 ABSOLUTE MAXIMUM RATINGS Symbol VCC Vout Iout Pd Supply Voltage 1) Output Voltage Output Sink Current Power Dissipation 2) TS831-5 and TS831-4 TS831-3 TO-92 SO-8 TSSOP-8 Parameter Value 7 -0.3 to Vcc + 0.3 20 5 625 700 625 100 -40 to +85 -65 to +150 Unit V V mA mW mA C C IF Toper Tstg Clamp Diode Forward Current, pin 1 to pin 2 3) Operating Free Air Temperature Range Storage Temperature 1. All voltages values, except differential voltage are with respect to network ground terminal. 2. T j = 150C, Tamb = 25o C with Rthja = 200o C/W for TO-92 package Rthja = 175o C/W for SO8 package Rthja = 200o C/W for TSSOP8 package 3. Maximum package power dissipation limit s must be observed. OPERATING CONDITIONS Symbol VCC Supply Voltage Parameter Value 1 to 5.5 Unit V TS831-5 ELECTRICAL CHARACTERISTICS Tamb = 25C (unless otherwise specified) Symbol Vthi Parameter Threshold Voltage - VCC Increasing -40C Tamb +85C -40C Tamb +125C Threshold Voltage - VCC Decreasing -40C Tamb +85C -40C Tamb +125C Hysteresis Voltage Current Consumption Low Level Output Voltage -40C Tamb +85C -40C Tamb +125C Low Level Output Voltage -40C Tamb +125C VCC = 5V VCC = 4V, IOL = 8mA 450 Min. 4.10 4.10 4.21 4.10 4.06 50 100 4.46 4.46 200 12 800 1000 1300 100 1000 V mV A mV Typ. 4.33 4.46 4.50 V Max. Unit Vthd Vhys ICC VOL IOH tphl VCC = 5V 2 nA s Response Time High to Low R L = 10k, CL = 15pF, V CC = Vthd -10mV 20 Note : Limits are 100% production tested at 25C. Limits over temperature are guaranteed through correlation and by design. 2/11 TS831 TS831-4 ELECTRICAL CHARACTERISTICS Tamb = 25C (unless otherwise specified) Symbol Vthi Parameter Threshold Voltage - VCC Increasing -40C Tamb +85C -40C Tamb +125C Threshold Voltage - VCC Decreasing -40C Tamb +85C -40C Tamb +125C Hysteresis Voltage Current Consumption Low Level Output Voltage -40C Tamb +85C -40C Tamb +125C Low Level Output Voltage -40C Tamb +125C VCC = 5V VCC = 4V, IOL = 8mA 450 Min. 4.17 4.10 4.4 4.17 4.13 50 100 4.66 4.66 200 12 800 1000 1300 100 1000 V mV A mV Typ. 4.35 4.66 4.70 V Max. Unit Vthd Vhys ICC VOL IOH tphl VCC = 5V 2 nA s Response Time High to Low R L = 10k, CL = 15pF, V CC = Vthd -10mV 20 Note : Limits are 100% production tested at 25C. Limits over temperature are guaranteed through correlation and by design. TS831-3 ELECTRICAL CHARACTERISTICS Tamb = 25C (unless otherwise specified) Symbol Vthi Vthd Vhys ICC VOL IOH tphl Parameter Threshold Voltage - VCC Increasing -40C Tamb +125C Threshold Voltage - VCC Decreasing -40C Tamb +125C Hysteresis Voltage Current Consumption Low Level Output Voltage -40C Tamb +125C Low Level Output Voltage -40C Tamb +125C VCC = 3V VCC = 2.4V, I OL = 1mA VCC = 3V 140 2 Min. 2.55 2.65 2.55 30 60 2.8 100 12 400 500 100 1000 Typ. 2.71 2.8 Max. Unit V V mV A mV nA s Response Time High to Low R L = 10k, CL = 15pF, V CC = Vthd -10mV 20 Note : Limits are 100% production tested at 25C. Limits over temperature are guaranteed through correlation and by design. 3/11 TS831 EQUIVALENT SCHEMATIC DIAGRAM TIMING DIAGRAM 4/11 TS831 Output voltage versus input voltage 10 Reset output voltage versus Input voltage 5.0 8 Output voltage (V) 6 Output voltage (V) TS831-3 RL= 10 Kohms T=25C 4.0 TS831-3 RL= 10 Kohms T=25C 3.0 4 2.0 2 1.0 0 0 2 4 6 8 10 0.0 2.60 2.65 2.70 2.75 Input voltage (V) Input voltage (V) Output voltage versus input voltage 10 TS831-4 RL= 10 Kohms T=25C Reset output voltage versus Input voltage 5.0 8 Output voltage (V) 4.0 Output voltage (V) TS831-4 RL= 10 Kohms T=25C 6 3.0 4 2.0 2 1.0 0 0 2 4 6 8 10 Input voltage (V) 0.0 4.4 4.5 Input voltage (V) 4.6 Output voltage versus input voltage 10 TS831-5 RL= 10 Kohms T=25C Reset output voltage versus Input voltage 5.0 8 Output voltage (V) 4.0 Output voltage (V) 6 3.0 4 2.0 TS831-5 RL= 10 Kohms T=25C 2 1.0 0 0 2 4 6 8 10 Input voltage (V) 0.0 4.20 4.24 4.28 4.32 4.36 4.40 Input voltage (V) 5/11 TS831 Vth versus temperature while Vcc increasing 4.6 Vth versustemperature whileVcc decreasing 4.44 4.5 Vthi (Volts) Vt h i x ma 4.42 4.40 Vthd (Volts) Vth d m a x 4.5 4.38 4.36 i Vt h 4.4 m in Vthd min TS831-4 4.34 TS831-4 4.4 -40 -20 0 20 40 60 80 100 120 Temperature (C) 4.32 -40 -20 0 20 40 60 80 100 120 Temperature (C) Hysteresis voltage versus temperature 160 Supply current versus temperature 9.6 9.4 Ic c ma x 140 Hysteresis (mV) TS831-4 Supply current (A) 9.2 9.0 8.8 8.6 8.4 8.2 T S8 31-4 No lo ad 120 Ic c mi n 100 80 -40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120 Temperature (C) Temperature (C) Supply current vs input voltage & temperature 16 TS831-3 No Load Supply current (A) 12 +125C -40C Voltage output low vs Isink & temperature 3 TS831-3 Vin=2.4V 2.5 +125C +85C +25C -40C 1 2 Vol (V) 8 1.5 4 -40C 25C 0.5 0 0 2 4 6 8 10 Input voltage (V) 0 0 2 4 Isink (mA) 6 8 6/11 TS831 Supply current vs input voltage & temperature 25C 12 TS83 1-4 No Load Voltage output low vs Isink & temperature 4 TS831-4 Vin=4V +125C 3 Supply current (A) +12 5C +85C Vol (V) 8 +125C -40C 2 -40C +25C 4 25C -40C 1 0 0 2 4 6 8 10 Input voltage (V) 0 0 5 10 Isink (mA) 15 20 Supply current vs inputvoltage &temperature 25C 12 TS831-5 No Load +125C 8 +125C -40C Voltage output low vs Isink & temperature 4 3 Supply current (A) TS831-5 Vin=4V +125C Vol (V) +85C 2 -40C 1 +25C 25C 4 -40C 0 0 2 4 6 8 10 Input voltage (V) 0 0 5 10 Isink (mA) 15 20 Clamp diode forward current versus voltage 100 Response time 5V 4V Input signal 80 Forward current (mA) Vin = 0V T=25C 5V 60 Reset output TS831-4 RL= 10 Kohms T=25C 40 20 0V 0 0 0.5 1 1.5 0 20 40 60 80 100 Forward voltage (V) Time (s) 7/11 TS831 Basic configuration in Pullup resistor Power Supply TS831 Reset Microprocessor circuit Special remarks * Some microprocessor mayintegratethe pull upresistor. * For the pull up resistor choice, pleaseuse thegraphs nammed"Voltage output lowvs Isink&temperature" depending on TS831 versions. 8/11 Gnd TS831 PACKAGE MECHANICAL DATA 8 PINS - PLASTIC MICROPACKAGE (SO) Millimeters Dim. Min. A a1 a2 a3 b b1 C c1 D E e e3 F L M S 0.1 0.65 0.35 0.19 0.25 4.8 5.8 1.27 3.81 3.8 0.4 4.0 1.27 0.6 8 (max.) 0.150 0.016 Typ. Max. 1.75 0.25 1.65 0.85 0.48 0.25 0.5 45 (typ.) 5.0 6.2 0.189 0.228 Min. 0.004 0.026 0.014 0.007 0.010 Inches Typ. Max. 0.069 0.010 0.065 0.033 0.019 0.010 0.020 0.197 0.244 0.050 0.150 0.157 0.050 0.024 9/11 TS831 PACKAGE MECHANICAL DATA 3 PINS - PLASTIC PACKAGE TO-92 Millimeters Dim. Min L B O1 C K O2 a 3.2 4.45 4.58 12.7 0.407 0.35 Typ. 1.27 3.7 5.00 5.03 0.5 Max. 4.2 5.2 5.33 0.508 Min. 0.126 0.1752 0.1803 0.5 0.016 0.0138 Inches Typ. 0.05 0.1457 0.1969 0.198 0.0197 Max. 0.1654 0.2047 0.2098 0.02 10/11 TS831 PACKAGE MECHANICAL DATA 8 PINS - THIN SHRINK SMALL OUTLINE PACKAGE k c 0,25 mm .010 inch GAGE PLANE L E1 SEATING PLANE A A2 A1 5 C E L1 D 4 b C 8 aaa PIN 1 IDENTIFICA TION Millimeters Dim. Min. A A1 A2 b c D E E1 e k l 0.05 0.80 0.19 0.09 2.90 4.30 0 0.50 Typ. Max. 1.20 0.15 1.05 0.30 0.20 3.10 4.50 8 0.75 Min. 0.01 0.031 0.007 0.003 0.114 0.169 0 0.09 1 e Inches Typ. Max. 0.05 0.006 0.041 0.15 0.012 0.122 0.177 8 0.030 1.00 0.039 3.00 6.40 4.40 0.65 0.60 0.118 0.252 0.173 0.025 0.0236 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibil ity for the consequences of use of such information nor for any infring ement of patents or other righ ts of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change witho ut notice. This publ ication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life suppo rt devices or systems withou t express written approval of STMicroelectronics. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2000 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom (c) http://www. st.com 11/11 |
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