MITSUMI IC for CMOS System Reset PST38XXU
IC for CMOS System Reset
Monolithic IC PST38XXU Series
Outline
This open drain output system reset IC, developed using the CMOS process. Super low consumption current
of 1.0µA typ. (PST3810 ~ PST3819) has been achieved through use of the CMOS process. Also, detection
voltage is high precision detection of ±2%.
Features
(1) Super low consumption current 1.0µA typ. (when VDD = (
-
VDET) + 2.0V) PST3810 ~ PST3819
(2) High precision detection voltage ±2%
(3) Operating range 0.7 ~ 10V
(4) Wide operating temperature range
-
30 ~ +85°C
(5) Detection voltage 0.9 ~ 6.0V (0.1V step)
Package
SC-82ABA, SC-82ABB
Applications
(1) Microcomputer, CPU, MPU reset circuits
(2) Logic circuit reset circuits
(3) Battery voltage check circuits
(4) Back-up circuit switching circuits
(5) Level detection circuits
Pin Assignment
12
43
SC-82ABA
SC-82ABB
(TOP VIEW)
1OUT
2VDD
3NC
4GND
April 16, 2001
Phased Out Products
MITSUMI IC for CMOS System Reset PST38XXU
Block Diagram
VDD 2
1
4
GND
VREF
OUT
Pin No. Pin Name Function
1OUT Reset Signal Output Pin
2VDD VDDPin/Voltage Detect Pin
3NC
4GND GND Pin
Absolute Maximum Ratings (Ta=25°C)
Recommended Operating Conditions
Item Symbol Rating Unit
Operating Temperature TOPT
-
30~+85 °C
Storage Temperature TSTG
-
40~+125 °C
Supply Voltage VDD max. 12 V
Output Voltage VOUT VSS
-
0.3~12 V
Output Current IOUT 70 mA
Power Dissipation PD150 mW
Item Symbol Rating Unit
Operating Temperature TOPT
-
30~+85 °C
Supply Voltage VDD +0.70~+10 V
Pin Explanations
Phased Out Products
MITSUMI IC for CMOS System Reset PST38XXU
Electrical Characteristics (Unless otherwise specified, Ta=25°C)
Item
Detecting Voltage
Hysteresis Voltage
Supply Current1 Supply Current2
-
VDET(V) VHYS(V) ISS1(µA) ISS2(µA)
Test Circuit 2 Test Circuit 2 Test Circuit 1 Test Circuit 1
Min. Typ. Max. Min. Typ. Max. Condition Typ. Max. Condition Typ. Max.
PST3809 0.882 0.900 0.918 0.027 0.045 0.063 1.5 3.7 0.9 2.7
PST3810 0.980 1.000 1.020 0.030 0.050 0.070
PST3811 1.078 1.100 1.122 0.033 0.055 0.077 1.8 4.5
PST3812 1.176 1.200 1.224 0.036 0.060 0.084
PST3813 1.274 1.300 1.326 0.039 0.065 0.091 2.0 5.0
PST3814 1.372 1.400 1.428 0.042 0.070 0.098 1.0 3.0
PST3815 1.470 1.500 1.530 0.045 0.075 0.105
PST3816 1.568 1.600 1.632 0.048 0.080 0.112
PST3817 1.666 1.700 1.734 0.051 0.085 0.119 2.5 5.5
PST3818 1.764 1.800 1.836 0.054 0.090 0.126
PST3819 1.862 1.900 1.938 0.057 0.095 0.133
PST3820 1.960 2.000 2.040 0.060 0.100 0.140
PST3821 2.058 2.100 2.142 0.063 0.105 0.147
PST3822 2.156 2.200 2.244 0.066 0.110 0.154 3.0 6.0
PST3823 2.254 2.300 2.346 0.069 0.115 0.161
PST3824 2.352 2.400 2.448 0.072 0.120 0.168 1.1 3.3
PST3825 2.450 2.500 2.550 0.075 0.125 0.175
PST3826 2.548 2.600 2.652 0.078 0.130 0.182
PST3827 2.646 2.700 2.754 0.081 0.135 0.189 3.5 7.0
PST3828 2.744 2.800 2.856 0.084 0.140 0.196
PST3829 2.842 2.900 2.958 0.087 0.145 0.203
PST3830 2.940 3.000 3.060 0.090 0.150 0.210
PST3831 3.038 3.100 3.162 0.093 0.155 0.217
PST3832 3.136 3.200 3.264 0.096 0.160 0.224 4.0 8.0
PST3833 3.234 3.300 3.366 0.099 0.165 0.231
PST3834 3.332 3.400 3.468 0.102 0.170 0.238 1.2 3.6
PST3835 3.430 3.500 3.570 0.105 0.175 0.245
PST3836 3.528 3.600 3.672 0.108 0.180 0.252
PST3837 3.626 3.700 3.774 0.111 0.185 0.259 4.5 9.0
PST3838 3.724 3.800 3.876 0.114 0.190 0.266
PST3839 3.822 3.900 3.978 0.117 0.195 0.273
PST3840 3.920 4.000 4.080 0.120 0.200 0.280
PST3841 4.018 4.100 4.182 0.123 0.205 0.287
PST3842 4.116 4.200 4.284 0.126 0.210 0.294 5.0 10.0
PST3843 4.214 4.300 4.386 0.129 0.215 0.301
PST3844 4.312 4.400 4.488 0.132 0.220 0.308 1.3 3.9
PST3845 4.410 4.500 4.590 0.135 0.225 0.315
PST3846 4.508 4.600 4.692 0.138 0.230 0.322
PST3847 4.606 4.700 4.794 0.141 0.235 0.329 5.5 11.0
PST3848 4.704 4.800 4.896 0.144 0.240 0.336
PST3849 4.802 4.900 4.998 0.147 0.245 0.343
PST3850 4.900 5.000 5.100 0.150 0.250 0.350
PST3851 4.998 5.100 5.202 0.153 0.255 0.357
PST3852 5.096 5.200 5.304 0.156 0.260 0.364 6.0 12.0
PST3853 5.194 5.300 5.406 0.159 0.265 0.371
PST3854 5.292 5.400 5.508 0.162 0.270 0.378
PST3855 5.390 5.500 5.610 0.165 0.275 0.385 1.4 4.2
PST3856 5.488 5.600 5.712 0.168 0.280 0.392
PST3857 5.586 5.700 5.814 0.171 0.285 0.399 6.5 13.0
PST3858 5.684 5.800 5.916 0.174 0.290 0.406
PST3859 5.782 5.900 6.018 0.177 0.295 0.413
PST3860 5.880 6.000 6.120 0.180 0.300 0.420
VDD=
(
-
VDET)
-
0.10V
VDD=
(
-
VDET)
+2.0V
VDD=
(
-
VDET)
-
0.13V
VDD=
(
-
VDET)
-
0.16V
VDD=
(
-
VDET)
-
0.20V
Product
Name
Phased Out Products
MITSUMI IC for CMOS System Reset PST38XXU
Electrical Characteristics (Unless otherwise specified, Ta=25°C)
Item
Output Current1 Output Current2 Leak Current
IOUT1(mA) IOUT2(mA) ILEAK(µA)
Test Circuit 3 Test Circuit 3 Test Circuit 3
Condition Min. Typ. Condition Min. Typ. Condition Typ. Max.
PST3809
PST3810
PST3811
PST3812
PST3813
PST3814
PST3815
PST3816
PST3817
PST3818
PST3819
PST3820
PST3821
PST3822
PST3823
PST3824
PST3825
PST3826
PST3827
PST3828
PST3829
PST3830
PST3831
PST3832
PST3833
PST3834
PST3835
PST3836
PST3837
PST3838
PST3839
PST3840
PST3841
PST3842
PST3843
PST3844
PST3845
PST3846
PST3847
PST3848
PST3849
PST3850
PST3851
PST3852
PST3853
PST3854
PST3855
PST3856
PST3857
PST3858
PST3859
PST3860
Product
Name
N-ch
VDS=
0.05V
VDD=
0.7V
N-ch
VDS=
0.5V
VDD=1.5V0.01 0.05
VDD=
10V
VDS=
10V
-
0.11.0 2.0
VDD=0.85V 0.05 0.5
VDD=1.0V 0.2 1.0
Phased Out Products
MITSUMI IC for CMOS System Reset PST38XXU
Electrical Characteristics (Unless otherwise specified, Ta=25°C)
Item
Threshold Operating Voltage1 Threshold Operating Voltage2
Detecting Voltage Temp. Coefficient
VDDL1(V) VDDL2(V)
-
VDET/ TOPT (ppm/°C)
Test Circuit 2 Test Circuit 2 Test Circuit 2
Condition Typ. Max. Condition Typ. Max. Condition Typ.
PST3809
PST3810
PST3811
PST3812
PST3813
PST3814
PST3815
PST3816
PST3817
PST3818
PST3819
PST3820
PST3821
PST3822
PST3823
PST3824
PST3825
PST3826
PST3827
PST3828
PST3829
PST3830
PST3831
PST3832
PST3833
PST3834
PST3835
PST3836
PST3837
PST3838
PST3839
PST3840
PST3841
PST3842
PST3843
PST3844
PST3845
PST3846
PST3847
PST3848
PST3849
PST3850
PST3851
PST3852
PST3853
PST3854
PST3855
PST3856
PST3857
PST3858
PST3859
PST3860
Product
Name
VOUT <<
=0.1V
TOPT=25°C
VOUT <
=0.1V
-
30°C <
=
TOPT
<
=85°C
0.55 0.70
-
30°C <
=
TOPT
<
=85°C
±1000.65 0.80
Phased Out Products
MITSUMI IC for CMOS System Reset PST38XXU
Measuring Circuit
(1)
VDD
2
4
1
PST
38XX
ISS
VIN
GND
(2)
+5V or VDD
VIN
VDD
PST
38XX 1
2
4
GND
OUT
470kΩ
(3)
OUT
IOUT
VDS
1
2
4
PST
38XX
VDD
GND
VIN
(4)
OUT
ILEAK
VDS
1
2
4
PST
38XX
VDD
GND
VIN
Phased Out Products
MITSUMI IC for CMOS System Reset PST38XXU
Application Circuits
VDD
GND
OUT
2
4
1
PST
38XX
RL
VDD
RESET Logic
System
VIN
Please note that there is any possibility of circuit oscillation when resistance put in the line VIN.
Please be advised that Mitsumi Electric Co., Ltd. is not liable for any accidents or damage caused as a result
of the use of this circuit.
In the event a problem which may affect industrial property or any other rights of us or a third
party is encountered during the use of information described in these circuit, Mitsumi Electric
Co., Ltd. shall not be liable for any such problem, nor grant a license therefor.
VIN
VDD
OUT
PST
38XX
4
2
1
GND
Timing Chart
V
V
VDD
OUT
VHYS
+VDET
-
VDET
Phased Out Products
MITSUMI IC for CMOS System Reset PST38XXU
Characteristics PST3809 (
-
VDET=0.9V)
Detecting voltage vs input voltage
0.0
0 0.2 0.4 0.6 0.8 1
Input Voltage (V)
Output Voltage (V)
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Supply Current vs input voltage
Detecting voltage vs temperature
0.80
0.85
0.90
0.95
-
40
-
20 0 20 406080100
Temperature (°C)
1.00
Detecting Voltage (V)
Hysteresis voltage vs temperature
Output current 1 vs temperature
0.00
0.05
0.10
0.15
-
40
-
20 0 20 406080100
0.20
Temperature (°C)
Output Current 1 (mA)
Output current 2 vs temperature
Note: These are typical characteristics.
Phased Out Products
MITSUMI IC for CMOS System Reset PST38XXU
Detecting voltage vs input voltage
0.0
0.5
1.0
1.5
2.0
2.5
0 0.5 1 1.5 2 2.5 3
3.0
Input Voltage (V)
Output Voltage (V)
Supply current vs input voltage
Detecting voltage vs temperature
2.60
-
40
-
20 0 20 406080100
3.00
2.90
2.80
2.70
Temperature (°C)
Detecting Voltage (V)
Hysteresis voltage vs temperature
Output current 1 vs temperature
0.00
-
40
-
20 0 20 406080100
0.20
0.15
0.10
0.05
Temperature (°C)
Output Current 1 (mA)
Output current 2 vs temperature
Note: These are typical characteristics.
Characteristics PST3828 (
-
VDET=2.8V)
Phased Out Products
MITSUMI IC for CMOS System Reset PST38XXU
Detecting voltage vs input voltage
0.0
012345
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
Input Voltage (V)
Output Voltage (V)
Supply current vs input voltage
Detecting voltage vs temperature
4.2
-
40
-
20 0 20 406080100
5.0
4.8
4.6
4.4
Temperature (°C)
Detecting Voltage (V)
Hysteresis voltage vs temperature
Output current 1 vs temperature
0.00
-
40
-
20 0 20 406080100
0.20
0.15
0.10
0.05
Temperature (°C)
Output Current 1 (mA)
Output current 2 vs temperature
Note: These are typical characteristics.
Characteristics PST3846 (
-
VDET=4.6V)
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