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| Order this document by MC34064/D Undervoltage Sensing Circuit The MC34064 is an undervoltage sensing circuit specifically designed for use as a reset controller in microprocessor-based systems. It offers the designer an economical solution for low voltage detection with a single external resistor. The MC34064 features a trimmed-in-package bandgap reference, and a comparator with precise thresholds and built-in hysteresis to prevent erratic reset operation. The open collector reset output is capable of sinking in excess of 10 mA, and operation is guaranteed down to 1.0 V input with low standby current. These devices are packaged in 3-pin TO-226AA, 8-pin SO-8 and Micro-8 surface mount packages. Applications include direct monitoring of the 5.0 V MPU/logic power supply used in appliance, automotive, consumer and industrial equipment. * Trimmed-In-Package Temperature Compensated Reference MC34064 MC33064 UNDERVOLTAGE SENSING CIRCUIT SEMICONDUCTOR TECHNICAL DATA * * * * * * * * Comparator Threshold of 4.6 V at 25C Precise Comparator Thresholds Guaranteed Over Temperature Comparator Hysteresis Prevents Erratic Reset Reset Output Capable of Sinking in Excess of 10 mA Internal Clamp Diode for Discharging Delay Capacitor Guaranteed Reset Operation with 1.0 V Input Low Standby Current Economical TO-226AA, SO-8 and Micro-8 Surface Mount Packages D SUFFIX PLASTIC PACKAGE CASE 751 (SO-8) 8 1 P SUFFIX PLASTIC PACKAGE CASE 29 (TO-226AA) 1 2 3 Pin 1. Reset 2. Input 3. Ground Representative Block Diagram Input 2 (2) Reset DM SUFFIX PLASTIC PACKAGE CASE 846A (Micro-8) 8 1 Reset 1 8 N.C. 7 N.C. 6 N.C. 5 N.C. (Top View) 1 (1) Input 2 N.C. 3 Ground 4 1.2 Vref ORDERING INFORMATION Device Operating Temperature Range Package SO-8 TA = 0 to +70C Micro-8 TO-226AA SO-8 Micro-8 TO-226AA Gnd 3 (4) = Sink Only Positive True Logic MC34064D-5 MC34064DM-5 MC34064P-5 Pin numbers adjacent to terminals are for the 3-pin TO-226AA package. Pin numbers in parenthesis are for the 8-lead packages. This device contains 21 active transistors. MC33064D-5 MC33064DM-5 TA = - 40 to +85C MC33064P-5 (c) Motorola, Inc. 1996 Rev 2 MOTOROLA ANALOG IC DEVICE DATA 1 MC34064 MC33064 MAXIMUM RATINGS Rating Power Input Supply Voltage Reset Output Voltage Reset Output Sink Current (Note 1) Clamp Diode Forward Current, Pin 1 to 2 (Note 1) Power Dissipation and Thermal Characteristics P Suffix, Plastic Package Maximum Power Dissipation @ TA = 25C Thermal Resistance, Junction-to-Air D Suffix, Plastic Package Maximum Power Dissipation @ TA = 25C Thermal Resistance, Junction-to-Air DM Suffix, Plastic Package Maximum Power Dissipation @ TA = 25C Thermal Resistance, Junction-to-Air Operating Junction Temperature Operating Ambient Temperature MC34064 MC33064 Storage Temperature Range NOTE: ESD data available upon request. Symbol Vin VO ISink IF Value -1.0 to 10 10 Internally Limited 100 Unit V V mA mA PD RJA PD RJA PD RJA TJ TA 625 200 625 200 520 240 +150 0 to +70 -40 to +85 mW C/W mW C/W mW C/W C C Tstg -65 to +150 C ELECTRICAL CHARACTERISTICS (For typical values TA = 25C, for min/max values TA is the operating ambient temperature range that applies [Notes 2 and 3] unless otherwise noted.) Characteristics COMPARATOR Threshold Voltage High State Output (Vin Increasing) Low State Output (Vin Decreasing) Hysteresis RESET OUTPUT Output Sink Saturation (Vin = 4.0 V, ISink = 8.0 mA) (Vin = 4.0 V, ISink = 2.0 mA) (Vin = 1.0 V, ISink = 0.1 mA) Output Sink Current (Vin, Reset = 4.0 V) Output Off-State Leakage (Vin, Reset = 5.0 V) Clamp Diode Forward Voltage, Pin 1 to 2 (IF = 10 mA) TOTAL DEVICE Operating Input Voltage Range Quiescent Input Current (Vin = 5.0 V) Vin Iin 1.0 to 6.5 - - 390 - 500 V A VOL - - - ISink IOH VF 10 - 0.6 0.46 0.15 - 27 0.02 0.9 1.0 0.4 0.1 60 0.5 1.2 mA A V V V VIH VIL VH 4.5 4.5 0.01 4.61 4.59 0.02 4.7 4.7 0.05 Symbol Min Typ Max Unit NOTES: 1. Maximum package power dissipation limits must be observed. 2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 3. Tlow = 0C for MC34064 Thigh = +70C for MC34064 -40C for MC33064 +85C for MC33064 2 MOTOROLA ANALOG IC DEVICE DATA MC34064 MC33064 Figure 1. Reset Output Voltage versus Input Voltage 1 0 VO , OUTPUT VOLTAGE (V) 8.0 6.0 4.0 2.0 0 5.0 RL = 10 k to Vin TA = 25C VO , OUTPUT VOLTAGE (V) 4.0 3.0 2.0 1.0 0 RL = 10 k to Vin TA = 25C Figure 2. Reset Output Voltage versus Input Voltage 0 2.0 4.0 6.0 Vin, INPUT VOLTAGE (V) 8.0 1 0 4.56 0 4.58 4.60 4.62 0 V , INPUT VOLTAGE (V) 0 0 in 4.64 0 Figure 3. Comparator Threshold Voltage versus Temperature 4.630 V th, THRESHOLD VOLTAGE (V) RL = 10 k to Vin 4.620 4.610 4.600 4.590 4.580 4.570 -55 Lower Threshold Low State Output -25 0 25 50 75 100 125 I in , INPUT CURRENT (mA) Upper Threshold High State Output 0.8 0.6 1.0 Figure 4. Input Current versus Input Voltage TA = +25C -40C +85C 0.4 0.2 0 TA = +25C +85C -40C 0 2.0 4.0 6.0 8.0 10 TA, AMBIENT TEMPERATURE (C) Vin, INPUT VOLTAGE (V) Figure 5. Reset Output Saturation versus Sink Current 2.0 Vin = 4.0 V V OL, OUTPUT SATURATION (V) 1.5 TA = 85C TA = -40C 1.0 4.0 V - Vin Figure 6. Reset Delay Time Reset Vin = 5.0 V to 4.0 V RL = 10 k TA = 25C TA = 25C 90% Vin 5.0 V - 10k Reset 0.5 10% 0 5.0V 4.0V REF 0 10 20 30 ISink, SINK CURRENT (mA) 40 200 ns/DIV MOTOROLA ANALOG IC DEVICE DATA 3 MC34064 MC33064 Figure 7. Clamp Diode Forward Current versus Voltage 80 I F , FORWARD CURRENT (mA) Vin = 0 V TA = 25C 60 40 20 0 0 0.4 0.8 1.2 VF , FORWARD VOLTAGE (V) 1.6 Figure 8. Low Voltage Microprocessor Reset + Power Supply 2 (2) 1 (1) R Reset Microprocessor Circuit - - + 1.2 Vref CDLY 3 (4) A time delayed reset can be accomplished with the addition of CDLY. For systems with extremely fast power supply rise times (<500 ns) it is recommended that the RCDLY time constant be greater than 5.0 s. Vth(MPU) is the microprocessor reset input threshold. 1 tDLY = RCDLY In Vth(MPU) 1- Vin Figure 9. Low Voltage Microprocessor Reset with Additional Hysteresis RH + Power Supply 1 (1) - - + 1.2Vref 4.6 RH VH + 0.02 RL Vth(lower) 340 RH x 10-6 Where: RH 150 Where: RL 1.5 , 10 k Iin Test Data 2 (2) RL Reset Microprocessor Circuit VH (mV) 20 51 40 81 71 112 100 164 190 327 Vth (mV) 0 3.4 6.8 6.8 10 10 16 16 34 34 51 51 RH () 0 10 20 20 30 30 47 47 100 100 150 150 RL (k) 0 1.5 4.7 1.5 2.7 1.5 2.7 1.5 2.7 1.5 2.7 1.5 3 (4) Comparator hysteresis can be increased with the addition of resistor RH. The hysteresis equation has been simplified and does not account for the change of input current Iin as VCC crosses the comparator threshold (Figure 4). An increase of the lower threshold Vth(lower) will be observed due to Iin which is typically 340 A at 4.59 V. The equations are accurate to 10% with RH less than 150 and RL between 1.5 k and 10 k . 276 480 4 MOTOROLA ANALOG IC DEVICE DATA MC34064 MC33064 Figure 10. Voltage Monitor 1.0k + Power Supply - - + 1.2Vref 3 (4) 2 (2) 1 (1) - + 1.2Vref 3 (4) Solar Cells + - 2 (2) 1 (1) Figure 11. Solar Powered Battery Charger Figure 12. Low Power Switching Regulator 25H Vin = 11.5 to 14.5V 470 22 4.7k 330 2 (2) 1N756 Test 1 (1) - + 1.2Vref 3 (4) Line Regulation Load Regulation Output Ripple Efficiency Conditions Vin = 11.5 V to 14.5 V, IO = 50 mA Vin = 12.6 V, IO = 0 mA to 50 mA Vin = 12.6 V, IO = 50 mA Vin = 12.6 V, IO = 50 mA Results 35 mV 12 mV 60 mVpp 77% + 680 1.2k MPSW51A + 470 1N5819 + VO = 5.0 V IO = 50 mA Figure 13. MOSFET Low Voltage Gate Drive Protection VCC RL MTP3055EL 270 4.6V 2 (2) 1 (1) - + 1.2Vref 3 (4) Overheating of the logic level power MOSFET due to insufficient gate voltage can be prevented with the above circuit. When the input signal is below the 4.6 V threshold of the MC34064, its output grounds the gate of the L2 MOSFET. MOTOROLA ANALOG IC DEVICE DATA 5 MC34064 MC33064 OUTLINE DIMENSIONS P SUFFIX PLASTIC PACKAGE CASE 29-04 (TO-226AA) ISSUE AD A R P SEATING PLANE B F L K NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. CONTOUR OF PACKAGE BEYOND DIMENSION R IS UNCONTROLLED. 4. DIMENSION F APPLIES BETWEEN P AND L. DIMENSION D AND J APPLY BETWEEN L AND K MINIMUM. LEAD DIMENSION IS UNCONTROLLED IN P AND BEYOND DIMENSION K MINIMUM. DIM A B C D F G H J K L N P R V INCHES MIN MAX 0.175 0.205 0.170 0.210 0.125 0.165 0.016 0.022 0.016 0.019 0.045 0.055 0.095 0.105 0.015 0.020 0.500 --- 0.250 --- 0.080 0.105 --- 0.100 0.115 --- 0.135 --- MILLIMETERS MIN MAX 4.45 5.20 4.32 5.33 3.18 4.19 0.41 0.55 0.41 0.48 1.15 1.39 2.42 2.66 0.39 0.50 12.70 --- 6.35 --- 2.04 2.66 --- 2.54 2.93 --- 3.43 --- XX G H V 1 D J C SECTION X-X N N D SUFFIX PLASTIC PACKAGE CASE 751-05 (SO-8) ISSUE P -A- B M 8 5 J P 0.25 (0.010) M X 45 _ 4X -B- 1 4 NOTES: 1. DIMENSIONS A AND B ARE DATUMS AND T IS A DATUM SURFACE. 2. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 3. DIMENSIONS ARE IN MILLIMETER. 4. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 5. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 6. DIMENSION D DOES NOT INCLUDE MOLD PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. DIM A B C D F G J K M P R MILLIMETERS MIN MAX 4.80 5.00 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.18 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50 G M_ -T- 8X C R SEATING PLANE D 0.25 (0.010) M K TB S A S 6 F MOTOROLA ANALOG IC DEVICE DATA MC34064 MC33064 OUTLINE DIMENSIONS DM SUFFIX PLASTIC PACKAGE CASE 846A-02 (Micro-8) ISSUE B -A- K -B- PIN 1 ID G D 8 PL 0.08 (0.003) M NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.15 (0.006) PER SIDE. 4. DIMENSION D DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD FLASH OR PROTRUSION SHALL NOT EXCEED 0.25 (0.010) PER SIDE. MILLIMETERS MIN MAX 2.90 3.10 2.90 3.10 --- 1.10 0.25 0.40 0.65 BSC 0.05 0.15 0.13 0.23 4.75 5.05 0.40 0.70 INCHES MIN MAX 0.114 0.122 0.114 0.122 --- 0.043 0.010 0.016 0.026 BSC 0.002 0.006 0.005 0.009 0.187 0.199 0.016 0.028 TB S A S -T- SEATING PLANE 0.038 (0.0015) H C J L DIM A B C D G H J K L MOTOROLA ANALOG IC DEVICE DATA 7 MC34064 MC33064 Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. 1-800-441-2447 or 602-303-5454 MFAX: RMFAX0@email.sps.mot.com - TOUCHTONE 602-244-6609 INTERNET: http://Design-NET.com JAPAN: Nippon Motorola Ltd.; Tatsumi-SPD-JLDC, 6F Seibu-Butsuryu-Center, 3-14-2 Tatsumi Koto-Ku, Tokyo 135, Japan. 03-81-3521-8315 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852-26629298 8 *MC34064/D* MOTOROLA ANALOG IC DEVICE DATA MC34064/D |
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