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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 SO8 (Plastic Micropackage) Z TO92 (Plastic Package) 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 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 TSSOP8 (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 Temperature Range D -40, +125C * * * Z * * * P * * * TO92 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 1/11 TS831 ABSOLUTE MAXIMUM RATINGS Symbol VCC VOUT IOUT PD Supply Voltage Output Voltage Output Sink Current Power Dissipation 2) TS831-5 and TS831-4 TS831-3 TO92 SO8 TSSOP8 1) Parameter Value 7 -0.3 to Vcc + 0.3 20 5 625 700 625 100 -65 to +150 Unit V V mA mW mA C IF TSTG Clamp Diode Forward Current, pin 1 to pin 2 3) Storage Temperature 1. All voltages values, except differential voltage are with respect to network ground terminal. 2. T j = 150C, Tamb = 25oC 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. OPERATING CONDITIONS Symbol VCC TOPER Supply Voltage Operating Free Air Temperature Range Parameter Value 1 to 5.5 -40 to +125 Unit V C TS831-5 ELECTRICAL CHARACTERISTICS Tamb = 25C (unless otherwise specified) Symbol VTHI Parameter Threshold Voltage with VCC Increasing -40C Tamb +85C -40C Tamb +125C Threshold Voltage with VCC Decreasing -40C Tamb +85C -40C Tamb +125C Hysteresis Voltage Current Consumption Low Level Output Voltage -40C Tamb +85C -40C Tamb +125C High Level Output Current -40C Tamb +125C VCC = 5V VCC = 4V, IOL = 8mA 450 Min. 4.11 4.11 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 RL = 10k, CL = 15pF, VCC = 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 with VCC Increasing -40C Tamb +85C -40C Tamb +125C Threshold Voltage with VCC Decreasing -40C Tamb +85C -40C Tamb +125C Hysteresis Voltage Current Consumption Low Level Output Voltage -40C Tamb +85C -40C Tamb +125C High Level Output Current -40C Tamb +125C VCC = 5V VCC = 4V, IOL = 8mA 450 Min. 4.18 4.18 4.40 4.17 4.13 50 100 4.66 4.66 200 12 800 1000 1300 100 1000 V mV A mV Typ. 4.50 4.66 4.70 V Max. Unit VTHD VHYS ICC VOL IOH TPHL VCC = 5V 2 nA s Response Time High to Low RL = 10k, CL = 15pF, VCC = 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 with VCC Increasing -40C Tamb +125C Threshold Voltage with VCC Decreasing -40C Tamb +125C Hysteresis Voltage Current Consumption Low Level Output Voltage -40C Tamb +125C High Level Output Current -40C Tamb +125C VCC = 3V VCC = 2.4V, IOL = 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 RL = 10k, CL = 15pF, VCC = 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 INPUT (Vcc) OUTPUT 1.2V Vref GND TIMING DIAGRAM 4/11 TS831 Output voltage versus Vcc 5 TS831- 3 RL = 10 k T=25C Reset output voltage versus Vcc 5 TS831- 3 RL = 10 k T=25C Output Voltage (V) Output Voltage (V) 4 4 3 3 2 2 1 1 0 0 1 2 3 4 5 0 2.600 2.625 2.650 2.675 2.700 2.725 2.750 Vcc (V) Vcc (V) Output voltage versus Vcc 5 TS831- 4 RL = 10 k T=25C Reset output voltage versus Vcc 5 Output Voltage (V) Output Voltage (V) 4 4 TS831- 4 RL = 10 k T=25C 3 3 2 2 1 1 0 0 1 2 3 4 5 0 4.40 4.45 4.50 4.55 4.60 Vcc (V) Vcc (V) Output voltage versus Vcc 5 TS831- 5 RL = 10 k T=25C Reset output voltage versus Vcc 5 Output Voltage (V) Output Voltage (V) 4 4 TS831- 5 RL = 10 k T=25C 3 3 2 2 1 1 0 0 1 2 3 4 5 0 4.20 4.25 4.30 4.35 4.40 Vcc (V) Vcc (V) 5/11 TS831 VTHI versus temperature 4.60 TS831- 4 VTHD versus temperature 4.44 VTHD max 4.42 TS831-4 4.55 V THI max 4.40 VTHD (V) min VTHI (V) 4.50 4.38 4.36 4.34 4.45 V THI VTHD min 4.40 -40 -20 0 20 40 60 80 100 120 4.32 -40 -20 0 20 40 60 80 100 120 Temperature (C) Temperature (C) Hysteresis voltage versus temperature 160 Supply current versus temperature 10.0 Supply current (A) 140 Hysteresis (mV) TS831- 4 No load Icc max 9.5 120 9.0 Icc min 100 8.5 80 TS831- 4 Vcc=5V No load 60 -40 -20 0 20 40 60 80 100 120 8.0 -40 -20 0 20 40 60 80 100 120 Temperature (C) Temperature (C) Supply current vs Vcc & temperature 12 10 TS831- 3 No load Voltage output low vs Isink & temperature 2.0 TS831- 3 Input voltage=2.4 V +125C +85C Supply current (A) 8 6 +125C 4 +25C 2 0 0 1 2 3 4 5 -40C 1.5 VOL (V) 1.0 +25C - 40C 0.5 0.0 0 1 2 3 4 5 Vcc (V) ISINK (mA) 6/11 TS831 Supply current vs Vcc & temperature 10 TS831- 4 No load Voltage output low vs Isink & temperature 4 TS831- 4 Vcc= 4 V 3 +125C Supply current (A) 8 +85C +125C VOL (V) 6 +85C 2 - 40C 1 +25C 4 - 40C 2 +25C 0 0 1 2 3 4 5 0 0 5 10 15 20 Vcc (V) ISINK (mA) Supply current vs Vcc & temperature 10 TS831- 5 No load +125C +85C 6 Voltage output low vs Isink & temperature 4 TS831- 5 Vcc=4 V 3 +85C +125C Supply current (A) 8 VOL (V) 2 - 40C +25C 4 - 40C +25C 1 2 0 0 1 2 3 4 5 0 0 5 10 15 20 Vcc (V) ISINK (mA) Clamp diode forward current versus voltage 100 Vcc=0 V T=25C Response time 5V 4V Vcc Forward current (mA) 80 5V 60 Reset output 4V TS831- 4 RL = 10 k T=25C 40 Response time 20 0V 0 0.0 0.5 1.0 1.5 0 20 40 60 80 Forward voltage (V) Time (s) 7/11 TS831 Basic configuration in Pull up resistor Power Supply TS831 Reset Microprocessor circuit Special remarks * Som microprocessor may integrate the pull up resistor. e * For the pull up resistor choice, please use the graphs nammed "V oltage output low vs 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 TO92 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 IDENTIFICATION 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 responsibility for the consequences of use of such information nor for any infringement of patents or other rights 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 without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2001 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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