TS831 STMicroelectronics, TS831 Datasheet

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TS831

Manufacturer Part Number
TS831
Description
Micropower voltage supervisor with reset active low
Manufacturer
STMicroelectronics
Datasheet

Specifications of TS831

Fast Response Time
20µs FOR A 10mV OVERDRIVE

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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 20 s 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
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
November 2001
TS831-5I
TS831-4I
TS831-3I
Part Number
4.33V typ. FOR TS831-5
4.50V typ. FOR TS831-4
2.71V typ. FOR TS831-3
in Tape & Reel (PT)
ULTRA LOW POWER CONSUMPTION :
12 A maximum
PRECISION RESET THRESHOLD
THRESHOLD VOLTAGE:
GUARANTEED RESET OPERATION FOR
V
OPEN DRAIN OUTPUT COMPARATOR
FAST RESPONSE TIME : 20 s FOR A 10mV
OVERDRIVE
INTERNAL BUILT-IN HYSTERESIS
PIN TO PIN COMPATIBLE WITH MC33064
AND MC33164
Power-on reset generator for microcontroller
Power failure detector
CC
DOWN TO 1V
Temperature Range
-40, +125°C
MICROPOWER VOLTAGE SUPERVISOR
D
Package
Z
P
PIN CONNECTIONS (top view)
(Plastic Micropackage)
(Thin Shrink Small Outline Package)
SO8
D
RESET ACTIVE LOW
SO8-TSSOP8
TSSOP8
TO92
P
(Plastic Package)
TO92
Z
TS831
1/11

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TS831 Summary of contents

Page 1

... 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 response (with ...

Page 2

... Response Time High to Low T PHL R = 10k , C = 15pF Note : Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation and by design. 2/11 Parameter TS831-5 and TS831-4 TS831-3 TO92 SO8 TSSOP8 3) o C/W for TO-92 package o C/W for SO8 package o C/W for TSSOP8 package ...

Page 3

... Decreasing 4V 8mA -10mV CC THD Parameter Increasing CC Decreasing 2.4V 1mA -10mV CC THD TS831 Min. Typ. Max. Unit 4.50 4.18 4.66 V 4.18 4.70 4.40 4.17 4.66 V 4.13 4.66 50 100 200 450 800 1000 mV 1300 2 100 nA 1000 20 s Min. Typ. Max. ...

Page 4

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

Page 5

... Reset output voltage versus Vcc 4.40 Reset output voltage versus Vcc 4.20 TS831 TS831 T=25°C 2.650 2.675 2.700 2.725 2.750 Vcc (V) TS831 T=25°C 4.45 4.50 4.55 4.60 Vcc (V) TS831 T=25°C 4.25 4.30 4.35 4.40 Vcc (V) ...

Page 6

... Voltage output low vs Isink & temperature 2.0 1.5 1.0 0.5 0 TS831-4 V max THD V min THD - 100 120 Temperature (°C) Icc max Icc min TS831- 4 Vcc=5V No load - 100 120 Temperature (°C) TS831- 3 Input voltage=2.4 V +125°C +85°C +25°C - 40° (mA) SINK 5 ...

Page 7

... TS831- 4 Vcc +125°C +85°C +25°C - 40° (mA) SINK TS831- 5 +125°C Vcc=4 V +85°C +25°C - 40° (mA) SINK 4 V Vcc Reset output 4 V TS831 T=25°C Response time Time (µs) TS831 7/11 ...

Page 8

... TS831 Basic configuration Pull up resistor Power TS831 Reset Supply Special remarks * Som e microprocessor may integrate the pull up resistor. * For the pull up resistor choice, please use the graphs nammed "V oltage output low vs Isink & temperature" depending on TS831 versions. 8/11 Microprocessor circuit ...

Page 9

... C 0. 4 3 Millimeters Typ. Max. 1.75 0.25 1.65 0.85 0.48 0.25 0.5 45° (typ.) 5.0 6.2 1.27 3.81 4.0 1.27 0.6 8° (max.) Inches Min. Typ. Max. 0.069 0.004 0.010 0.065 0.026 0.033 0.014 0.019 0.007 0.010 0.010 0.020 0.189 0.197 0.228 0.244 0.050 0.150 0.150 0.157 0.016 0.050 0.024 TS831 9/11 ...

Page 10

... TS831 PACKAGE MECHANICAL DATA 3 PINS - PLASTIC PACKAGE TO92 Dim. Min L B 3.2 O1 4.45 C 4.58 K 12.7 O2 0.407 a 0.35 10/11 Millimeters Typ. Max. 1.27 3.7 4.2 5.00 5.2 5.03 5.33 0.5 0.508 Inches Min. Typ. Max. 0.05 0.126 0.1457 0.1654 0.1752 0.1969 0.2047 0.1803 0.198 0.2098 0.5 0.016 0.0197 0.02 0.0138 ...

Page 11

... Singapore - Spain - Sweden - Switzerland - United Kingdom Millimeters Typ. Max. 1.20 0.15 1.00 1.05 0.30 0.20 3.00 3.10 6.40 4.40 4.50 0.65 8° 0.60 0.75 STMicroelectronics GROUP OF COMPANIES © http://www.st.com Inches Min. Typ. Max. 0.05 0.01 0.006 0.031 0.039 0.041 0.007 0.15 0.003 0.012 0.114 0.118 0.122 0.252 0.169 0.173 0.177 0.025 0° 0.09 0.0236 0.030 TS831 8° 11/11 ...

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