MICROPOWER UNDERVOLTAGE SENSING CIRCUITS

www.DataSheet4U.com Order this document by MC33464/D MC33464 Micropower Undervoltage Sensing Circuits The MC33464 series are micropower undervoltage sensing circuits that are specifically designed for use with battery powered microprocessor based systems, where extended battery life is required. A choice of several threshold voltages from 0.9 V to 4.5 V are available. These devices feature a very low quiescent bias current of 0.8 µA typical. The MC33464 series features a highly accurate voltage reference, a comparator with precise thresholds and built–in hysteresis to prevent erratic reset operation, a choice of output configurations between open drain or complementary MOS, and guaranteed operation below 1.0 V with extremely low standby current. These devices are available in either SOT–89 3–pin or SOT–23 5–pin surface mount packages. Applications include direct monitoring of the MPU/logic power supply used in portable, appliance, automotive and industrial equipment. MICROPOWER UNDERVOLTAGE SENSING CIRCUITS SEMICONDUCTOR TECHNICAL DATA MC33464 Features: • Extremely Low Standby Current of 0.8 µA at Vin = 1.5 V TAB 1 • • • • • Wide Input Voltage Range (0.7 V to 10 V) Monitors Power Supply Voltages from 1.1 V to 5.0 V High Accuracy Detector Threshold (±2.5%) Two Reset Output Types (Open Drain or Complementary Drive) Two Surface Mount Packages (SOT–89 or SOT–23 5–Pin) ORDERING INFORMATION Device MC33464H–09AT1 MC33464H–20AT1 MC33464H–27AT1 MC33464H–30AT1 MC33464H–45AT1 MC33464H–09CT1 MC33464H–20CT1 MC33464H–27CT1 MC33464H–30CT1 MC33464H–43CT1 MC33464H–45CT1 MC33464N–09ATR MC33464N–20ATR MC33464N–21ATR MC33464N–27ATR MC33464N–30ATR MC33464N–45ATR MC33464N–48ATR MC33464N–09CTR MC33464N–20CTR MC33464N–27CTR MC33464N–30CTR MC33464N–45CTR Threshold Voltage 0.9 2.0 2.7 3.0 4.5 0.9 2.0 2.7 3.0 4.3 4.5 0.9 2.0 2.1 2.7 3.0 4.5 4.8 0.9 2.0 2.7 3.0 4.5 Type Open Drain Reset Marking T09A T20A T27A T30A T45A T09C T20C T27C T30C T43C T45C 9N 0R 1R 7R 0S 5T 8T 9F 0J 7J 0K 5L Package (Qty/Reel) Reset Input Ground 1 2 3 (Top View) SOT 89 SOT–89 (1000) 5 H SUFFIX PLASTIC PACKAGE CASE 1213 (SOT–89) Tab (Tab is connected to Pin 2) Com l. Compl. MOS Reset 1 Open Drain Reset N SUFFIX PLASTIC PACKAGE CASE 1212 (SOT–23–5) SOT–23 ( (3000) ) Reset Input Ground 1 2 3 (Top View) 4 N/C 5 N/C Compl. MOS Reset Other voltages from 0.9 to 6.0 V, in 0.1 V increments, are available. Consult factory for information. © Motorola, Inc. 1999 Rev 2, 07/1999 MOTOROLA ANALOG IC DEVICE DATA 1 MC33464 Representative Block Diagrams MC33464X–YYATZ Open Drain Configuration 2 Input 1 Reset 1 Reset Vref Vref MC33464X–YYCTZ Complementary Drive Configuration 2 Input 3 Gnd X Denotes Package Type YY Denotes Threshold Voltage TZ Denotes Taping Type This device contains 25 active transistors. 3 Gnd MAXIMUM RATINGS (TC = 25°C, unless otherwise noted.) Rating Power Input Supply Voltage Reset Output Voltage Symbol Vin Value 0 to 10 Unit V V ÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ VO IO –0.3 to 10 70 Reset Output Current (Source or Sink) mA ÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Operating Junction Temperature Operating Ambient Temperature Storage Temperature Range TJ +125 °C °C °C – TA –40 to +85 Tstg –40 to +125 260°C, 10 s Lead Temperature (Soldering) Tsolder Power Dissipation and Thermal Characteristics Maximum Power Dissipation Case 1212 (SOT–23) N Suffix Thermal Resistance, Junction–to–Ambient Maximum Power Dissipation Case 1213 (SOT–89) H suffix Thermal Resistance, Junction–to–Ambient PD RθJA PD RθJA 150 667 300 333 mW °C/W mW °C/W 2 MOTOROLA ANALOG IC DEVICE DATA MC33464 ELECTRICAL CHARACTERISTICS (For all values TA = 25°C (Note 1), unless otherwise noted.) Characteristic COMPARATOR Symbol Min Typ Max Unit ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á Threshold Voltage High State Output (Vin Decreasing) 09 Suffix 20 Suffix 21 Suffix 27 Suffix 30 Suffix 43 Suffix 45 Suffix 48 Suffix Threshold Hysteresis 09 Suffix 20 Suffix 21 Suffix 27 Suffix 30 Suffix 43 Suffix 45 Suffix 48 Suffix Threshold Voltage Temperature Coefficient V VIH 0.878 1.95 2.048 2.633 2.925 4.193 4.388 4.680 0.027 0.060 0.063 0.081 0.090 0.129 0.135 0.144 TC – 0.9 2.0 2.1 2.7 3.0 4.3 4.5 4.8 0.922 2.05 2.152 2.768 3.075 4.407 4.613 4.920 0.063 0.140 0.147 0.189 0.210 0.301 0.315 0.336 – PPM/°C VH 0.045 0.100 0.105 0.135 0.150 0.215 0.225 0.240 ±100 V ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á ÁÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ Á Á Á Á ÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á ÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á ÁÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á RESET OUTPUT Output Voltage High State (Complementary Output: Isource = 1.0 mA) Low State (Complementary or Open Drain: Isink = 1.0 mA) Output Sink Current (Vin = 1.5 V, VOL = 0.5 V) Output Source Current (Vin = 4.5 V, VOL = 2.4 V) V VOH VOL IOL IOH Vin – 2.1 – 1.0 1.0 Vin – 1.0 0.025 2.0 2.0 Vin 0.05 – – mA mA TOTAL DEVICE Operating Input Voltage Range Quiescent Input Current Vin = 2.9 V Vin = 5.6 V Vin Iin 0.7 to 10 – – – – – V µA 0.9 1.2 – 2.7 3.6 Propagation Delay Time (Note 2) tp 100 µs NOTES: 1. Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 2. Propagation delay time is measured from the rising or falling edge of the input voltage to the point where the output voltage has transitioned to 50% of its final value. MOTOROLA ANALOG IC DEVICE DATA 3 MC33464 Figure 1. Quiescent Current versus Input Voltage 5.0 I in , QUIESCENT BIAS CURRENT (µ A) MC33464H–45CT1 4.0 3.0 2.0 1.0 0 TA = 80°C Vin , THRESHOLD VOLTAGE (V) 4.7 Figure 2. Detector Threshold versus Temperature 4.8 MC33464H–45CT1 Upper Threshold Vin Increasing 4.6 Hysteresis Voltage Lower Threshold Vin Decreasing TA = 25°C TA = –30°C 4.5 0 2.0 4.0 6.0 8.0 10 12 4.4 –55 –25 0 25 50 75 100 125 Vin, INPUT VOLTAGE (V) TA, AMBIENT TEMPERATURE (°C) Figure 3. Reset Output Voltage versus Input Voltage 5.0 4.0 3.0 2.0 1.0 0 I OL, OUTPUT SINK CURRENT (mA) VO , OUTPUT VOLTAGE (V) MC33464H–45ATR RL = 470 k to Vin TA = 25°C 50 40 30 20 10 0 Figure 4. Reset Output Voltage versus Sink Current MC33464H–45CT1 TA = 25°C Vin = 4.0 V Vin = 3.5 V Vin = 3.0 V Vin = 2.5 V Vin = 2.0 V Vin = 1.5 V 0 1.0 2.0 3.0 4.0 5.0 0 1.0 2.0 3.0 4.0 5.0 Vin, INPUT VOLTAGE (V) VOL, OUTPUT SINK VOLTAGE (V) Figure 5. Output Delay Time versus Load Capacitance 100 t p , OUTPUT DELAY TIME (ms) MC33464H–45ATR RL = 470 k to Vin TA = 25°C 25 20 15 10 5.0 Figure 6. Output Sink Current versus Input Voltage MC33464H–45CT1 10 I O , OUTPUT CURRENT (mA) 1.0 Vin Increasing TA = –30°C TA = 25°C 0.1 Vin Decreasing 0.01 0.0001 0.001 0.01 0.1 TA = 80°C 0 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 LOAD CAPACITANCE (µF) Vin, INPUT VOLTAGE (V) 4 MOTOROLA ANALOG IC DEVICE DATA MC33464 Figure 7. Microprocessor Reset Circuit with Delay 2 Input 1 Reset 470 k Microprocessor Vin Vref CDelay 3 Gnd A time delayed reset can be accomplished with the addition of CDelay. Figure 5 provides a graph of time delays, for both rising and falling output waveform edges, as a function of CDelay. If another value of pullup resistance is used, the time delay can be calculated by using the equation: t + R CDelay Delay 1 V 1– th(MPU) V in ) tp where VthMPU is the microprocessor reset input threshold voltage and tp is the propagation delay internal to the MC33464. Figure 8. Microprocessor Reset Circuit 2 Input 1 Vin Vref Reset Microprocessor 3 Gnd MOTOROLA ANALOG IC DEVICE DATA 5 MC33464 OUTLINE DIMENSIONS H SUFFIX PLASTIC PACKAGE CASE 1213–01 (SOT–89) ISSUE O A D D1 B A2 C NOTES: 1. DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCING PER ASME Y14.5M, 1994. 3. DATUM C IS A SEATING PLANE. MILLIMETERS MIN MAX 1.40 1.60 0.37 0.57 0.32 0.52 0.30 0.50 4.40 4.60 1.50 1.70 ––– 4.25 2.40 2.60 1.50 BSC 3.00 BSC 0.80 ––– E L1 B E1 0.10 B1 e e1 2X M CB S A S C 0.10 M CB S A S DIM A2 B B1 C D D1 E E1 e e1 L1 N SUFFIX PLASTIC PACKAGE CASE 1212–01 (SOT–23