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MC34164 MC33164 Micropower Undervoltage Sensing Circuits
The MC34164 series are undervoltage sensing circuits specifically designed for use as reset controllers in portable microprocessor based systems where extended battery life is required. These devices offer the designer an economical solution for low voltage detection with a single external resistor. The MC34164 series features a bandgap reference, a comparator with precise thresholds and built-in hysteresis to prevent erratic reset operation, an open collector reset output capable of sinking in excess of 6.0 mA, and guaranteed operation down to 1.0 V input with extremely 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 3.0 or 5.0 V MPU/logic power supply used in appliance, automotive, consumer, and industrial equipment. * Temperature Compensated Reference
MICROPOWER UNDERVOLTAGE SENSING CIRCUITS
SEMICONDUCTOR TECHNICAL DATA
P SUFFIX PLASTIC PACKAGE CASE 29 (TO-226AA)
1 2 3
* * * * * * * *
Monitors 3.0 V (MC34164-3) or 5.0 V (MC34164-5) Power Supplies Precise Comparator Thresholds Guaranteed Over Temperature Comparator Hysteresis Prevents Erratic Reset Reset Output Capable of Sinking in Excess of 6.0 mA Internal Clamp Diode for Discharging Delay Capacitor Guaranteed Reset Operation With 1.0 V Input Extremely Low Standby Current: As Low as 9.0 A Economical TO-226AA, SO-8 and Micro-8 Surface Mount Packages
Pin 1. Reset 2. Input 3. Ground
D SUFFIX PLASTIC PACKAGE CASE 751 (SO-8)
8 1
DM SUFFIX PLASTIC PACKAGE CASE 846A (Micro-8)
8 1
Representative Block Diagram
Input 2 (2) Reset 1 (1)
Reset 1 Input 2 N.C. 3 Ground 4 (Top View)
8 N.C. 7 N.C. 6 N.C. 5 N.C.
ORDERING INFORMATION
Device 1.2 Vref MC34164D-3 MC34164D-5 MC34164DM-3 MC34164DM-5 MC34164P-3 MC34164P-5 MC33164D-3 MC33164D-5 MC33164DM-3 MC33164DM-5 MC33164P-3 MC33164P-5
(c) Motorola, Inc. 1996
Operating Temperature Range
Package SO-8
TA = 0 to +70C
Micro-8 TO-226AA SO-8
Gnd
3 (4) = Sink Only Positive True Logic
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 28 active transistors.
TA = -40 to +125C
Micro-8 TO-226AA
Rev 1
MOTOROLA ANALOG IC DEVICE DATA
1
MC34164 MC33164
MAXIMUM RATINGS
Rating Power Input Supply Voltage Reset Output Voltage Reset Output Sink Current 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 Range MC34164 Series MC33164 Series Storage Temperature Range
NOTE: ESD data available upon request.
Symbol Vin VO ISink IF
Value -1.0 to 12 -1.0 to 12 Internally Limited 100
Unit V V mA mA
PD RJA PD RJA PD RJA TJ TA
700 178 700 178 520 240 +150 0 to +70 - 40 to + 85
mW C/W mW C/W mW C/W C C
Tstg
- 65 to +150
C
MC34164-3, MC33164-3 SERIES ELECTRICAL CHARACTERISTICS (For typical values TA = 25C, for min/max values TA is the operating ambient temperature range
that applies [Notes 2 & 3], unless otherwise noted.) Characteristic COMPARATOR Threshold Voltage High State Output (Vin Increasing) Low State Output (Vin Decreasing) Hysteresis (ISink = 100 A) RESET OUTPUT Output Sink Saturation (Vin = 2.4 V, ISink = 1.0 mA) (Vin = 1.0 V, ISink = 0.25 mA) Output Sink Current (Vin, Reset = 2.4 V) Output Off-State Leakage (Vin, Reset = 3.0 V) (Vin, Reset = 10 V) Clamp Diode Forward Voltage, Pin 1 to 2 (IF = 5.0 mA) TOTAL DEVICE Operating Input Voltage Range Quiescent Input Current Vin = 3.0 V Vin = 6.0 V Vin Iin - - 9.0 24 15 40 1.0 to 10 - - V A VOL - - ISink IR(leak) 6.0 - - VF 6.0 0.14 0.1 12 0.02 0.02 0.9 0.4 0.3 30 0.5 1.0 1.2 V mA A V V VIH VIL VH 2.55 2.55 0.03 2.71 2.65 0.06 2.80 2.80 - 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 MC34164 Thigh = + 70C for MC34164 3. Tlow = - 40C for MC33164 Thigh = + 85C for MC33164
2
MOTOROLA ANALOG IC DEVICE DATA
MC34164 MC33164
MC34164-5, MC33164-5 SERIES ELECTRICAL CHARACTERISTICS (For typical values TA = 25C, for min/max values TA is the operating ambient temperature range
that applies [Notes 2 & 3], unless otherwise noted.) Characteristic COMPARATOR Threshold Voltage High State Output (Vin Increasing) Low State Output (Vin Decreasing) Hysteresis (ISink = 100 A) RESET OUTPUT Output Sink Saturation (Vin = 4.0 V, ISink = 1.0 mA) (Vin = 1.0 V, ISink = 0.25 mA) Output Sink Current (Vin, Reset = 4.0 V) Output Off-State Leakage (Vin, Reset = 5.0 V) (Vin, Reset = 10 V) Clamp Diode Forward Voltage, Pin 1 to 2 (IF = 5.0 mA) TOTAL DEVICE Operating Input Voltage Range Quiescent Input Current Vin = 5.0 V Vin = 10 V Vin Iin - - 12 32 20 50 1.0 to 10 - - V A VOL - - ISink IR(leak) 7.0 - - VF 0.6 0.14 0.1 20 0.02 0.02 0.9 0.4 0.3 50 0.5 2.0 1.2 V mA A V V VIH VIL VH 4.15 4.15 0.02 4.33 4.27 0.09 4.45 4.45 - Symbol Min Typ Max Unit
NOTES: 2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 3. Tlow = 0C for MC34164 Thigh = + 70C for MC34164 3. Tlow = - 40C for MC33164 Thigh = + 85C for MC33164
Figure 1. MC3X164-3 Reset Output Voltage versus Input Voltage
10 RL = 82 k to Vin TA = 25C 10
Figure 2. MC3X164-5 Reset Output Voltage versus Input Voltage
VO , OUTPUT VOLTAGE (V)
VO , OUTPUT VOLTAGE (V)
8.0 6.0 4.0 2.0 0 0
8.0 6.0 4.0 2.0 0
RL = 82 k to Vin TA = 25C
2.0
4.0
6.0
8.0
10
0
2.0
4.0
6.0
8.0
10
Vin, INPUT VOLTAGE (V)
Vin, INPUT VOLTAGE (V)
MOTOROLA ANALOG IC DEVICE DATA
3
MC34164 MC33164
Figure 3. MC3X164-3 Reset Output Voltage versus Input Voltage
5.0 V O , OUTPUT VOLTAGE (V) V O , OUTPUT VOLTAGE (V) 4.0 3.0 2.0 1.0 RL = 82 k to Vin TA = 25C 0 2.62 2.66 2.70 Vin, INPUT VOLTAGE (V) 2.74 2.78 0 4.22 4.26 5.0 4.0 3.0 2.0 1.0 RL = 82 k to Vin TA = 25C 4.30 Vin, INPUT VOLTAGE (V) 4.34 4.38
Figure 4. MC3X164-5 Reset Output Voltage versus Input Voltage
Figure 5. MC3X164-3 Comparator Threshold Voltage versus Temperature
2.76 V in , THRESHOLD VOLTAGE (V) V in , THRESHOLD VOLTAGE (V) Upper Threshold High State Output 2.72 4.36
Figure 6. MC3X164-5 Comparator Threshold Voltage versus Temperature
4.32
Upper Threshold High State Output
2.68
4.28
2.64
Lower Threshold Low State Output
4.24
Lower Threshold Low State Output
2.60 - 50
- 25
0
25
50
75
100
125
4.20 - 50
- 25
0
25
50
75
100
125
TA, AMBIENT TEMPERATURE (C)
TA, AMBIENT TEMPERATURE (C)
Figure 7. MC3X164-3 Input Current versus Input Voltage
50 40 30 20 10 0 TA = 0C TA = 70C TA = 25C 50 40 30 20 10 0
Figure 8. MC3X164-5 Input Current versus Input Voltage
I in, INPUT CURRENT ( A)
I in, INPUT CURRENT ( A)
TA = 25C
TA = 0C TA = 70C
0
2.0
4.0
6.0
8.0
10
0
2.0
4.0
6.0
8.0
10
Vin, INPUT VOLTAGE (V)
Vin, INPUT VOLTAGE (V)
4
MOTOROLA ANALOG IC DEVICE DATA
MC34164 MC33164
Figure 9. MC3X164-3 Reset Output Saturation versus Sink Current
4.0 V OL, OUTPUT SATURATION (V) V OL, OUTPUT SATURATION (V) Vin = 2.4 V 3.0 TA = 70C TA = 25C 2.0 TA = 25C TA = 0C TA = 70C 0 0 4.0 8.0 12 16 20 VSink, SINK CURRENT (mA) TA = 0C 4.0 Vin, Reset = 4 V 3.0 TA = 25C TA = 25C TA = 70C TA = 0C
Figure 10. MC3X164-5 Reset Output Saturation versus Sink Current
2.0
1.0
1.0
TA = 0C TA = 70C
0 0 4.0 8.0 12 16 20 ISink, SINK CURRENT (mA)
Figure 11. Clamp Diode Forward Current versus Voltage
32 I F , FORWARD CURRENT (mA)
Figure 12. Reset Delay Time (MC3X164-5 Shown)
Reset Vin = 5.0 V to 4.0 V RL = 43 k TA = 25C
24
Vin = 0 V TA = 25C
90% Vin 5.0 V 4.0 V
Vin 43k Reset
16
8.0
10 %
5.0V 4.0V
Ref
0
0
0.4
0.8 VF , FORWARD VOLTAGE (V)
1.2
1.6
5.0 s/DIV
Figure 13. Low Voltage Microprocessor Reset
2 (2) Power Supply 1 (1)
R Reset CDLY Microprocessor Circuit
1.2 Vref tDLY = RCDLY In 3 (4) 1-
1 Vth(MPU) Vin
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.
MOTOROLA ANALOG IC DEVICE DATA
5
MC34164 MC33164
Figure 14. Low Voltage Microprocessor Reset With Additional Hysteresis (MC3X164-5 Shown)
Test Data RL 1 (1) Reset Microprocessor Circuit VH (mV) 60 103 123 160 155 199 280 262 306 357 421 530 Vth (mV) 0 1.0 1.0 1.0 2.2 2.2 2.2 4.7 4.7 4.7 4.7 4.7 RH () 0 100 100 100 220 220 220 470 470 470 470 470 RL (k) 43 10 6.8 4.3 10 6.8 4.3 10 8.2 6.8 5.6 4.3
RH Iin Power Supply 2 (2) Vin
1.2 Vref MC3X164-5 3 (4)
VH
4.3 RH RL
+ 0.06
Vth(lower) 10 RH x 10 - 6 where: RH 1.0 k 43 k RL 4.3 k
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 Vin crosses the comparator threshold (Figure 8). An increase of the lower threshold Vth(lower) will be observed due to Iin which is typically 10 A at 4.3 V. The equations are accurate to 10% with RH less than 1.0 k and RL between 4.3 k and 43 k.
Figure 15. Voltage Monitor
1.0 k 2 (2) Power Supply 1 (1)
Figure 16. Solar Powered Battery Charger
2 (2) 1 (1)
Solar Cells 1.2 Vref 1.2 Vref 3 (4) 3 (4)
Figure 17. MOSFET Low Voltage Gate Drive Protection Using the MC3X164-5
VCC RL MTP3055EL
4.3V 2 (2)
270
1 (1) 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 4.3 V threshold of the MC3X164-5, its output grounds the gate of the L2 MOSFET.
1.2 Vref 3 (4) MC3X164-5
6
MOTOROLA ANALOG IC DEVICE DATA
MC34164 MC33164
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
F
MOTOROLA ANALOG IC DEVICE DATA
7
MC34164 MC33164
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
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8
*MC34164/D*
MOTOROLA ANALOG IC DEVICE DATA MC34164/D

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