TS831-3IZT

TS831 MICROPOWER VOLTAGE SUPERVISOR RESET ACTIVE LOW ■ 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 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 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. P TSSOP8 (Thin Shrink Small Outline Package) PIN CONNECTIONS (top view) SO8-TSSOP8 APPLICATION ■ Power-on reset generator for microcontroller ■ Power failure detector ORDER CODE TO92 Package Part Number TS831-5I TS831-4I TS831-3I Temperature Range -40, +125°C D Z P • • • • • • • • • 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 Parameter VCC Supply Voltage VOUT Output Voltage IOUT PD IF TSTG 1) Value Unit 7 V -0.3 to Vcc + 0.3 V Output Sink Current TS831-5 and TS831-4 TS831-3 20 5 mA Power Dissipation 2) TO92 SO8 TSSOP8 625 700 625 mW 100 mA -65 to +150 °C Value Unit 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 = 150°C, 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 Parameter Supply Voltage Operating Free Air Temperature Range 1 to 5.5 V -40 to +125 °C TS831-5 ELECTRICAL CHARACTERISTICS Tamb = 25°C (unless otherwise specified) Symbol Parameter Min. VTHI Threshold Voltage with VCC Increasing -40°C ≤ Tamb ≤ +85°C -40°C ≤ Tamb ≤ +125°C 4.11 4.11 VTHD Threshold Voltage with VCC Decreasing -40°C ≤ Tamb ≤ +85°C -40°C ≤ Tamb ≤ +125°C 4.10 4.06 VHYS Hysteresis Voltage Unit 4.46 4.50 V 4.46 4.46 V 200 mV 12 µA 800 1000 1300 mV 100 1000 nA 4.21 50 Current Consumption VCC = 5V Low Level Output Voltage -40°C ≤ Tamb ≤ +85°C -40°C ≤ Tamb ≤ +125°C VCC = 4V, IOL = 8mA VOL IOH High Level Output Current -40°C ≤ Tamb ≤ +125°C VCC = 5V Response Time High to Low RL = 10kΩ, CL = 15pF, VCC = VTHD -10mV 100 450 2 20 Note : Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation and by design. 2/11 Max. 4.33 ICC TPHL Typ. µs TS831 TS831-4 ELECTRICAL CHARACTERISTICS Tamb = 25°C (unless otherwise specified) Symbol Parameter Min. Max. Unit 4.66 4.70 V 4.66 4.66 V 200 mV 12 µA 800 1000 1300 mV 100 1000 nA 4.50 VTHI Threshold Voltage with VCC Increasing -40°C ≤ Tamb ≤ +85°C -40°C ≤ Tamb ≤ +125°C 4.18 4.18 VTHD Threshold Voltage with VCC Decreasing -40°C ≤ Tamb ≤ +85°C -40°C ≤ Tamb ≤ +125°C 4.17 4.13 VHYS Hysteresis Voltage 4.40 50 ICC Current Consumption VCC = 5V Low Level Output Voltage -40°C ≤ Tamb ≤ +85°C -40°C ≤ Tamb ≤ +125°C VCC = 4V, IOL = 8mA VOL IOH High Level Output Current -40°C ≤ Tamb ≤ +125°C VCC = 5V TPHL Typ. 100 450 2 Response Time High to Low RL = 10kΩ, CL = 15pF, VCC = VTHD -10mV µs 20 Note : Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation and by design. TS831-3 ELECTRICAL CHARACTERISTICS Tamb = 25°C (unless otherwise specified) Symbol Parameter Min. VTHI Threshold Voltage with VCC Increasing -40°C ≤ Tamb ≤ +125°C 2.55 VTHD Threshold Voltage with VCC Decreasing -40°C ≤ Tamb ≤ +125°C 2.55 VHYS Hysteresis Voltage Max. 2.71 2.8 2.65 30 ICC Current Consumption VCC = 3V VOL Low Level Output Voltage -40°C ≤ Tamb ≤ +125°C VCC = 2.4V, IOL = 1mA IOH High Level Output Current -40°C ≤ Tamb ≤ +125°C VCC = 3V TPHL Typ. Response Time High to Low RL = 10kΩ, CL = 15pF, VCC = VTHD -10mV 2.8 60 Unit V V 100 mV 12 µA 140 400 500 mV 2 100 1000 nA 20 µs Note : Limits are 100% production tested at 25°C. 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 Reset output voltage versus Vcc 5 TS831- 3 RL = 10 kΩ T=25°C 4 Output Voltage (V) Output Voltage (V) 5 3 2 TS831- 3 RL = 10 kΩ T=25°C 4 3 2 1 1 0 2.600 0 0 1 2 3 4 5 2.625 2.650 Vcc (V) Output voltage versus Vcc TS831- 4 RL = 10 kΩ T=25°C 4 Output Voltage (V) Output Voltage (V) 2.725 2.750 5 3 2 4 TS831- 4 RL = 10 kΩ T=25°C 3 2 1 1 0 0 1 2 3 4 0 4.40 5 4.45 4.50 4.55 4.60 Vcc (V) Vcc (V) Output voltage versus Vcc Reset output voltage versus Vcc 5 5 TS831- 5 RL = 10 kΩ T=25°C 4 Output Voltage (V) Output Voltage (V) 2.700 Reset output voltage versus Vcc 5 3 2 1 0 2.675 Vcc (V) 4 3 TS831- 5 RL = 10 kΩ T=25°C 2 1 0 1 2 3 Vcc (V) 4 5 0 4.20 4.25 4.30 4.35 4.40 Vcc (V) 5/11 TS831 VTHI versus temperature VTHD versus temperature 4.44 4.60 TS831-4 VTHD max TS831- 4 4.42 V THI 4.40 max VTHD (V) VTHI (V) 4.55 4.50 V THI 4.45 min 4.38 4.36 VTHD min 4.34 4.40 -40 -20 0 20 40 60 80 100 4.32 -40 120 -20 0 Temperature (°C) 40 60 80 100 120 Temperature (°C) Hysteresis voltage versus temperature Supply current versus temperature 10.0 160 140 TS831- 4 No load Supply current (µA) Hysteresis (mV) 20 120 100 Icc max 9.5 Icc min 9.0 TS831- 4 Vcc=5V No load 8.5 80 60 -40 -20 0 20 40 60 80 100 8.0 -40 120 -20 0 Temperature (°C) 20 40 60 80 100 120 Temperature (°C) Supply current vs Vcc & temperature Voltage output low vs Isink & temperature 12 8 +125°C 1.5 VOL (V) Supply current (µA) TS831- 3 Input voltage=2.4 V 2.0 TS831- 3 No load 10 6 +125°C +85°C 1.0 +25°C -40°C 4 - 40°C +25°C 0.5 2 0.0 0 0 1 2 3 Vcc (V) 6/11 4 5 0 1 2 3 ISINK (mA) 4 5 TS831 Supply current vs Vcc & temperature Voltage output low vs Isink & temperature 10 4 8 TS831- 4 Vcc= 4 V +85°C +125°C 3 +125°C 6 4 VOL (V) Supply current (µA) TS831- 4 No load +25°C +85°C 2 +25°C - 40°C - 40°C 1 2 0 0 0 1 2 3 4 0 5 5 10 Supply current vs Vcc & temperature 20 Voltage output low vs Isink & temperature 4 10 TS831- 5 No load TS831- 5 Vcc=4 V +125°C 8 +125°C 3 +85°C +85°C 6 VOL (V) Supply current (µA) 15 ISINK (mA) Vcc (V) 4 2 +25°C - 40°C - 40°C +25°C 1 2 0 0 0 1 2 3 4 5 0 5 10 Clamp diode forward current versus voltage 5V Forward current (mA) 4V Vcc=0 V T=25°C 5V Reset output 60 Vcc 4V TS831- 4 RL = 10 kΩ T=25°C 40 Response time 20 0 0.0 20 Response time 100 80 15 ISINK (mA) Vcc (V) 0V 0.5 1.0 Forward voltage (V) 1.5 0 20 40 60 80 Time (µs) 7/11 TS831 in Basic configuration TS831 Reset Microprocessor circuit Gnd Power Supply 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. 8/11 TS831 PACKAGE MECHANICAL DATA 8 PINS - PLASTIC MICROPACKAGE (SO) Millimeters Inches Dim. Min. A a1 a2 a3 b b1 C c1 D E e e3 F L M S Typ. Max. 0.65 0.35 0.19 0.25 1.75 0.25 1.65 0.85 0.48 0.25 0.5 4.8 5.8 5.0 6.2 0.1 Min. Typ. Max. 0.026 0.014 0.007 0.010 0.069 0.010 0.065 0.033 0.019 0.010 0.020 0.189 0.228 0.197 0.244 0.004 45° (typ.) 1.27 3.81 3.8 0.4 0.050 0.150 4.0 1.27 0.6 0.150 0.016 0.157 0.050 0.024 8° (max.) 9/11 TS831 PACKAGE MECHANICAL DATA 3 PINS - PLASTIC PACKAGE TO92 Millimeters Inches Dim. Min L B O1 C K O2 a 10/11 3.2 4.45 4.58 12.7 0.407 0.35 Typ. Max. Min. 1.27 3.7 5.00 5.03 4.2 5.2 5.33 0.5 0.508 0.126 0.1752 0.1803 0.5 0.016 0.0138 Typ. Max. 0.05 0.1457 0.1969 0.198 0.1654 0.2047 0.2098 0.0197 0.02 TS831 PACKAGE MECHANICAL DATA 8 PINS - THIN SHRINK SMALL OUTLINE PACKAGE k 0,25 mm .010 inch GAGE PLANE C SEATING PLANE E1 L1 L c A E A2 e 1 aaa 8 C b D 5 4 A1 PIN 1 IDENTIFICATION Millimeters Inches 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. 1.00 3.00 6.40 4.40 0.65 0.60 Max. Min. 1.20 0.15 1.05 0.30 0.20 3.10 0.01 0.031 0.007 0.003 0.114 4.50 0.169 8° 0.75 0° 0.09 Typ. 0.039 0.118 0.252 0.173 0.025 0.0236 Max. 0.05 0.006 0.041 0.15 0.012 0.122 0.177 8° 0.030 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. © The ST logo is a registered trademark of STMicroelectronics © 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 © http://www.st.com 11/11