MC33465 Micropower Undervoltage Sensing Circuits with Programmable Output Delay The MC33465 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. This device features a very low quiescent bias current of 1.0 µA typical. The MC33465 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, a time delayed output, which can be programmed by the system designer, and guaranteed operation below 1.0 V with extremely low standby current. This device is available in a SOT–23 5–pin surface mount package. Applications include direct monitoring of the MPU/logic power supply used in appliance, automotive, industrial and portable equipment. http://onsemi.com 5 1 SOT–23–5 N SUFFIX CASE 1212 PIN CONNECTIONS Features: • • • • • • • • Extremely Low Standby Current of 1.0 µA at Vin = 3.5 V 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) Programmable Output Delay by External Capacitor (100 ms typ. with 0.15 µF) Surface Mount Package (SOT–23 5–Pin) Convenient Tape and Reel (3000 per Reel) Reset 1 Input 2 5 CD Ground 3 4 N/C (Top View) ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet. Representative Block Diagrams MC33465N–YYATR Open Drain Output Configuration 2 MC33465N–YYCTR Complementary Output Configuration 1 Input 2 Reset Input RD RD 1 Reset Vref Vref 3 Gnd 5 3 CD Gnd 5 CD YY Denotes Threshold Voltage This device contains 28 active transistors. Semiconductor Components Industries, LLC, 1999 October, 1999 – Rev. 3 1 Publication Order Number: MC33465/D MC33465 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ MAXIMUM RATINGS Symbol Value Unit Power Input Supply Voltage Rating Vin 0 to 12 V Reset Output Voltage VO –0.3 to 12 V Reset Output Current (Source or Sink) IO 70 mA PD 150 mW Power Dissipation and Thermal Characteristics Maximum Power Dissipation at TA = 25°C Case 1212 (SOT–23) N Suffix Thermal Resistance, Junction–to–Ambient RθJA 667 °C/W Operating Junction Temperature TJ +125 °C Operating Ambient Temperature TA –40 to +85 °C Tstg –40 to +125 °C Tsolder 260°C, 10 s Storage Temperature Range Lead Temperature (Soldering) http://onsemi.com 2 MC33465 ELECTRICAL CHARACTERISTICS (For all values TA = 25°C (Note 1), unless otherwise noted.) ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ Characteristic Symbol Min Typ Max Unit SENSE COMPARATOR Threshold Voltage High to Low State Output (Vin Decreasing) 09 Suffix 20 Suffix 22 Suffix 27 Suffix 28 Suffix 30 Suffix 32 Suffix 34 Suffix 38 Suffix 43 Suffix 44 Suffix 45 Suffix 46 Suffix 47 Suffix V VIL 0.878 1.950 2.145 2.633 2.730 2.925 3.120 3.315 3.705 4.193 4.290 4.387 4.485 4.583 0.9 2.0 2.2 2.7 2.8 3.0 3.2 3.4 3.8 4.3 4.4 4.5 4.6 4.7 0.922 2.050 2.255 2.767 2.870 3.075 3.280 3.485 3.895 4.407 4.510 4.612 4.715 4.817 0.027 0.060 0.066 0.081 0.084 0.090 0.096 0.102 0.114 0.129 0.132 0.135 0.138 0.141 0.045 0.100 0.110 0.135 0.140 0.150 0.160 0.170 0.190 0.215 0.220 0.225 0.230 0.235 0.063 0.140 0.154 0.189 0.196 0.210 0.224 0.238 0.266 0.301 0.308 0.315 0.322 0.329 Threshold Hysteresis (Vin Increasing) 09 Suffix 20 Suffix 22 Suffix 27 Suffix 28 Suffix 30 Suffix 32 Suffix 34 Suffix 38 Suffix 43 Suffix 44 Suffix 45 Suffix 46 Suffix 47 Suffix VH V Threshold Voltage Temperature Coefficient TC – ±100 – Output Voltage High State (Complementary Output: Isource = 1.0 mA) Low State (Complementary or Open Drain Output: Isink = 1.0 mA) VOH VOL Vin – 2.1 – Vin – 1.0 0.25 Vin 0.5 Output Sink Current (Vin = 1.5 V, VOL = 0.5 V) IOL 1.0 2.0 – mA Output Source Current (Vin = 4.5 V, VOH = 2.4 V) IOH 1.0 2.0 – mA Output Sink Current (Vin = 1.5 V, VOL = 0.5 V) IOL 0.2 0.8 – mA Delay Resistance RD 0.5 1.0 2.0 MΩ Operating Input Voltage Range Vin 0.8 to 10 – – V Quiescent Input Current Vin = 4.34 V Vin = 6.50 V Iin – – 5.5 1.3 11 3.9 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ PPM/°C RESET OUTPUT V DELAY OUTPUT TOTAL DEVICE NOTE: µA 1. Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible. http://onsemi.com 3 MC33465 Figure 1. Reset Low State Sink Current versus Output Voltage Figure 2. Output Voltage versus Input Voltage 7.0 MC33465N–45ATR TA = 20°C 14 12 Vin = 2.5 V 10 8.0 2.0 V 6.0 4.0 1.5 V 2.0 0 1.0 0.5 1.5 2.5 2.0 TA = –30°C TA = 25°C 2.0 80°C, 20°C TA = 80°C 0 3.0 1.0 2.0 3.0 4.0 5.0 6.0 Vin, INPUT VOLTAGE (V) Figure 3. Input Current versus Input Voltage Figure 4. Comparator Input Threshold Voltage versus Temperature V in , INPUT THRESHOLD VOLTAGE (V) 3.0 MC33465N–45ATR TA = 80°C 6.0 5.0 TA = 25°C 4.0 3.0 80°C 2.0 25°C TA = –30°C –30°C 0 12 2.0 4.0 6.0 8.0 VIL + VH 2.85 2.8 VH 2.75 VIL 2.7 2.65 10 MC33465N–27ATR –20 0 20 40 TA, AMBIENT TEMPERATURE (°C) Figure 5. Reset Output Sink Current versus Input Voltage Figure 6. Reset Output Source Current versus Input Voltage MC33465N–27CTR Vin – VO = 2.1 V 3.5 8.0 80°C 6.0 4.0 2.0 3.0 2.5 Vin – VO = 1.5 V 2.0 Vin – VO = 1.0 V 1.5 1.0 Vin – VO = 0.5 V 0.5 0.5 80 4.0 TA = –30°C 25°C 0 60 Vin, INPUT VOLTAGE (V) MC33465N–27ATR VOL = 0.5 V 10 2.9 2.6 –40 IO , OUTPUT CURRENT (mA) I in , SUPPLY CURRENT ( µ A) 3.0 VOL, LOW STATE OUTPUT VOLTAGE (V) 1.0 I O, OUTPUT SINK CURRENT (mA) 30°C 4.0 0 0 7.0 0 5.0 1.0 8.0 0 MC33465N–45ATR 470 kΩ Pull–up 6.0 VO , OUTPUT VOLTAGE (V) I O , OUTPUT SINK CURRENT (mA) 16 1.0 1.5 2.0 2.5 0 3.0 0 Vin, INPUT VOLTAGE (V) 2.0 4.0 6.0 8.0 Vin, INPUT VOLTAGE (V) http://onsemi.com 4 10 12 MC33465 Figure 7. CD Sink Current versus Input Voltage CD , SINK CURRENT (mA) MC33465N–27ATR 10 VOL = 0.5 V TA = –30°C 14 25°C 8.0 80°C 6.0 4.0 2.0 0 Figure 8. CD Sink Current versus CD Voltage 16 I sink , SINK CURRENT (mA) 12 12 Vin = 2.5 V 10 8.0 Vin = 2.0 V 6.0 4.0 Vin = 1.5 V 2.0 0 0.5 1.0 1.5 2.0 0 3.0 2.5 0.5 0 1.0 Vin, INPUT VOLTAGE (V) Vth(D), DETECTOR THRESHOLD VOLTAGE (V) Figure 9. Delay Resistance versus Temperature 1.6 1.4 1.2 1.0 0.8 0.6 –20 0 20 40 3.0 60 80 1.8 1.7 1.6 Vin = 2.97 V 1.5 1.4 1.3 MC33465N–27ATR 1.2 –40 –20 0 20 40 TA, AMBIENT TEMPERATURE (°C) 1000 100 tD: Output Switch Low to High 1.0 tPHL: Output Switch High to Low 0.1 0.01 0.0001 2.5 Figure 10. Detector Threshold versus Temperature Figure 11. Output Delay Time versus Delay Capacitance 10 2.0 1.9 TA, AMBIENT TEMPERATURE (°C) t p, OUTPUT DELAY TIME (ms) R D, DELAY RESISTANCE (M Ω) 1.8 0.4 –40 1.5 VCD, VOLTAGE (V) 0.001 0.01 CD, DELAY CAPACITANCE (µF) http://onsemi.com 5 0.1 1 60 80 MC33465 Figure 12. Typical Open Drain Application VDD 2 5 CD CD Input R 1 MC33465 Series VDD Reset CPU Reset Gnd 3 Gnd Figure 13. Typical Complementary Output Application VDD 2 5 CD CD Input MC33465 Series VDD 1 Reset CPU Reset Gnd 3 Gnd APPLICATION CIRCUIT INFORMATION The MC33465 series are micropower undervoltage sensing circuits which offer a programmable time delayed output with the choice of either complementary output drive or open drain output configurations. Figure 14 shows the timing relationships between the input voltage and the resulting circuit waveforms. When the input voltage (Vin) exceeds the sense comparator threshold, the timing capacitor is allowed to charge through the internal delay resistor. When the output inverting driver threshold is exceeded, the Reset output switches from a logic “0” to a logic “1”. The top curve of Figure 11 provides the nominal delay time for a given value of delay capacitance. When Vin drops below the comparator threshold minus hysteresis voltage, the delay capacitor discharges. When the capacitance voltage drops below the inverting drive threshold, the output switches from a logic “1” to a logic “0”. The bottom curve in Figure 11 provides typical delay time for given delay capacitance values. The inverting driver threshold voltage is typically about Vin/2, as shown in Figure 10. http://onsemi.com 6 MC33465 Figure 14. Timing Waveforms Vin Input Voltage VIL + VH VIL Delay Capacitor Vin Reset Output 0V tD tD tD tD L–H H–L L–H H–L ORDERING INFORMATION Device Threshold Voltage MC33465N–09ATR MC33465N–20ATR MC33465N–22ATR MC33465N–27ATR MC33465N–28ATR MC33465N–30ATR MC33465N–32ATR MC33465N–34ATR MC33465N–38ATR MC33465N–45ATR MC33465N–46ATR MC33465N–47ATR 0.9 2.0 2.2 2.7 2.8 3.0 3.2 3.4 3.8 4.5 4.6 4.7 MC33465N–09CTR MC33465N–20CTR MC33465N–27CTR MC33465N–30CTR MC33465N–43CTR MC33465N–44CTR MC33465N–45CTR 0.9 2.0 2.7 3.0 4.3 4.4 4.5 Type Marking Open O en Drain Reset A9 C0 C2 C7 D8 D0 D2 D4 D8 E5 E6 E7 9A 0C 7C 0D 3E 4E 5E Compl. MOS Reset Other voltages from 0.9 to 6.0 V, in 0.1 V increments, are available. Consult factory for information. http://onsemi.com 7 Package Package SOT–23 SOT 23 5–Lead 3000 Tape & Reel MC33465 PACKAGE DIMENSIONS (SOT–23) N SUFFIX PLASTIC PACKAGE CASE 1212–01 ISSUE O A 5 E 1 A2 0.05 S B D NOTES: 1. DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. 3. DATUM C IS A SEATING PLANE. A1 DIM A1 A2 B C D E E1 e e1 L L1 4 2 L 3 E1 L1 B C 5X 0.10 M C B S A C S e e1 MILLIMETERS MIN MAX 0.00 0.10 1.00 1.30 0.30 0.50 0.10 0.25 2.80 3.00 2.50 3.10 1.50 1.80 0.95 BSC 1.90 BSC 0.20 ––– 0.45 0.75 Recommended Footprint for Surface Mount Applications 0.7 MAX. 1.0 2.4 0.95 0.95 1.9 (Unit: mm) SOT–23–5 ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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