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| (R) TS836 MICROPOWER VOLTAGE SUPERVISOR RESET ACTIVE HIGH . . . . . . . ULTRA LOW POWER CONSUMPTION : 12A max. @ VCC = 5V PRECISION RESET THRESHOLD (guaranteed over Temperature) 4.50Vtyp. THRESHOLD VOLTAGE (TS836-4) GUARANTEED RESET OPERATION FOR VCC DOWN TO 1V OPEN DRAIN OUTPUT COMPARATOR WITH Vol = 450mVtyp. @ Iol = 8mA & VCC = 4V FAST RESPONSE TIME : 20s FOR A 10mV OVERDRIVE 100mV INTERNAL HYSTERESIS D SO8 (Plastic Micropackage) Z TO92 (Plastic Package) ORDER CODES Part Number TS836-4I Temperature Range -40, +85oC Package D * Z u PIN CONNECTIONS DESCRIPTION The TS836 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 4.5V for TS836-4 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 higher than the threshold. An internalhysteresisof 100mV increases the comparator's noise margin and prevents false reset operation. APPLICATIONS Power-on reset generator for microcontroler Power failure detector 1/8 TO92 (top view) NC 8 SO8 NC 7 NC 6 NC 5 1 OUT 2 IN 3 GND 1 OUT 2 IN 3 NC 4 GND . . September 1998 TS836 ABSOLUTE MAXIMUM RATINGS Symbol VCC Vout Iout Pd Toper Tstg Note: 1. Parameter Supply Voltage - note 1 Output Voltage Output Current Power Dissipation Operating Free Air Temperature Range Storage Temperature All voltages values, except differential voltage are with respect to network ground terminal. Value 7 -0.3 to VCC+ 0.3 20 200 -40 to +85 -65 to +150 Unit V V mA mW o o C C OPERATING CONDITIONS Symbol VCC Supply Voltage Parameter Value 1 to 5.5 Unit V TS836-4 ELECTRICAL CHARACTERISTICS Tamb = 25oC (unless otherwise specified) Symbol Vthi Vthd Vhys ICC VOL IOH tphl Parameter Threshold Voltage - VCC Increasing Tmin. Tamb Tmax. Threshold Voltage - VCC Decreasing Tmin. Tamb Tmax. Hysteresis Voltage Current Consumption Low Level Output Voltage IOL = 8mA, T min. Tamb Tmax. Output Off-state Leakage Tmin. Tamb Tmax. VCC = 5V VCC = 4V VCC = 5V 450 2 20 Min. 4.17 4.17 50 Typ. 4.5 4.4 100 Max. 4.66 4.66 200 12 800 1000 100 1000 Unit V V mV A mV nA s Response Time High to Low RL = 10k, CL = 15pF, VCC = Vthd -10mV 2/8 TS836 EQUIVALENT SCHEMATIC DIAGRAM TIMING DIAGRAM 3/8 TS836 Vth vs Temperature while VCC increasing Vth vs Temperature while VCC decreasing Vthi (Volts) 4,56 Vthd (Volts) 4,44 TS836-4 x ia hm 4,42 x ma Vt h d 4,52 Vt 4,4 4,48 Vt i hm in 4,38 4,36 4,44 Vth m d in TS836-4 4,34 4,4 -50 -40 -30 -20 -10 0 10 20 30 40 50 Temperature (C) 60 70 80 90 100 110 120 4,32 -50 -40 -30 -20 -10 0 10 20 30 40 50 Temperature (C) 60 70 80 90 100 110 120 Hysteresis vs Temperature ICC vs Temperature Hysteresis ( mV) 160 Icc (A) 9,6 TS836-4 140 9,4 I cc a mx 9,2 120 I cc 9 mi n 100 8,8 8,6 80 TS836-4 8,4 60 -50 -40 -30 -20 -10 0 10 20 30 40 50 Temperature (C) 60 70 80 90 100 110 120 8,2 -50 -40 -30 -20 -10 0 10 20 30 40 50 Temperature (C) 60 70 80 90 100 110 120 Reset Output Voltage vs Input Voltage Voltage Output Low vs Sink Current Output voltage ( V) Vol (Volts) 1 5 0,8 4 TS836-4 RL=10Kohms T=25C TS836-4 T=25C 0,6 3 2 0,4 1 0,2 0 4,3 0 4,4 Input voltage (V) 4,5 4,6 0 2 4 6 8 10 12 14 16 18 20 Isink (mA) 4/8 TS836 Reset Output Voltage vs Input Voltage Supply Falling down : Reset Delay Time 5V I nput signal 2V/div 0.5ms/div 0V 5V Reset output 2V/div 0.5ms/div 0V TS836-4 RL=10Kohms T=25C I nput signal 0.5V/di v 10 s/di v 5V TS836-4 RL=10Kohms T=25C 3.5V 3.5V Reset output 2V/div 10 s/div 0V Supply Falling down : Extended Reset Delay Time with an Additional Capacitor Supply Rising up : Output Delay Time 5V I nput sig nal 0.5V/d iv 0.1 ms/div 3.5V TS836-4 RL=10 Kohms CL=10 nF T=25C In put signal 0.5V/di v 0.5 s/div 5V TS836-4 RL=10 Kohms T=25C 3.5V 5V Reset outp ut 2V/div 0.1 ms/div 3.5V Reset output 2V/div 0.5 s/div 0V 0V Reset Output Voltage vs Input Voltage (example) Reset Output Voltage vs Input Voltage (example) In put signal 2 V/div 0.5 ms/div 6V 4V TS836-4 RL=10 Kohms T=25C 6V 5V Input signal 2 V/div 0.5 ms/div 5V 3V TS836-4 RL=10 Kohms T=25C Reset output 2V/di v 0.5 ms/div 0V Reset output 2V/div 0.5 ms/div 0V 5/8 TS836 Basic Configuration Configuration with an additional Capacitive Load Load Resistor Load Resistor Vcc Input Voltage TS836 Output Voltage Reset Vcc Input Voltage TS836 Capacitive Load Reset Output Voltage 6/8 TS836 PACKAGE MECHANICAL DATA 8 PINS - PLASTIC MICROPACKAGE (SO) Dim. A a1 a2 a3 b b1 C c1 D E e e3 F L M S Min. 0.1 0.65 0.35 0.19 0.25 4.8 5.8 Millimeters Typ. Max. 1.75 0.25 1.65 0.85 0.48 0.25 0.5 45 (typ.) 5.0 6.2 o Min. 0.004 0.026 0.014 0.007 0.010 0.189 0.228 Inches Typ. Max. 0.069 0.010 0.065 0.033 0.019 0.010 0.020 0.197 0.244 1.27 3.81 3.8 0.4 4.0 1.27 0.6 8 (max.) o 0.050 0.150 0.150 0.016 0.157 0.050 0.024 7/8 TS836 PACKAGE MECHANICAL DATA 3 PINS - PLASTIC PACKAGE TO92 Dim. L B O1 C K O2 a Millimeters Min. 3.2 4.45 4.58 12.7 0.407 0.35 0.5 0.508 Typ. 1.27 3.7 5.00 5.03 4.2 5.2 5.33 0.126 0.1752 0.1803 0.5 0.016 0.0138 Max. Min. Inches Typ. 0.05 0.1457 0.1969 0.198 0.0197 0.1654 0.2047 0.2098 0.02 Max. Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such info rmation 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 publ ication are subject to change without notice. Thi s publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for useas critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a trademark of STMicroelectronics (c) 1998 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 8/8 |
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