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Part: PST3821
Category:
Power Management
-> Supervisory Circuits
-> System Supervisors/Reset
-> System Reset
Description: CMOS System Reset
Company: Mitsumi
Datasheet: Download PST3821 datasheet File size : 205 kB
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Datasheet text preview:
MITSUMI
CMOS System Reset PST38XXU
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 (2) High precision detection voltage (3) Operating range (4) Wide operating temperature range (5) Detection voltage 1.0µA typ. (when VDD = (-VDET) + 2.0V) PST3810 ~ PST3819 ±2% 0.7 ~ 10V -30 ~ +85°C 0.9 ~ 6.0V (0.1V step)
Package
SC-82AB
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
4
3 1 2 3 4 OUT VDD NC GND
1
2
SC-82AB (TOP VIEW)
MITSUMI
CMOS System Reset PST38XXU
Block Diagram
VDD 2
1 OUT
VREF GND 4
Pin Explanations
Pin No. 1 2 3 4 Pin Name OUT VDD NC GND GND Pin Function Reset Signal Output Pin VDDPin/Voltage Detect Pin
Absolute Maximum Ratings
Item Operating Temperature Storage Temperature Supply Voltage Output Voltage Output Current Power Dissipation
(Ta=25°C) Symbol TOPT TSTG VDDmax. VOUT IOUT PD Rating -30~+85 -40~+125 12 VSS-0.3~12 70 150 Unit °C °C V V mA mW
Recommended Operating Conditions
Item Operating Temperature Supply Voltage Symbol TOPT VDD Rating -30~+85 +0.70~+10 Unit °C V
MITSUMI
CMOS System Reset PST38XXU
Electrical Characteristics
Detecting Voltage -VDET(V) Test Circuit 2 Min. Typ. Max. 0.882 0.900 0.918 0.980 1.000 1.020 1.078 1.100 1.122 1.176 1.200 1.224 1.274 1.300 1.326 1.372 1.400 1.428 1.470 1.500 1.530 1.568 1.600 1.632 1.666 1.700 1.734 1.764 1.800 1.836 1.862 1.900 1.938 1.960 2.000 2.040 2.058 2.100 2.142 2.156 2.200 2.244 2.254 2.300 2.346 2.352 2.400 2.448 2.450 2.500 2.550 2.548 2.600 2.652 2.646 2.700 2.754 2.744 2.800 2.856 2.842 2.900 2.958 2.940 3.000 3.060 3.038 3.100 3.162 3.136 3.200 3.264 3.234 3.300 3.366 3.332 3.400 3.468 3.430 3.500 3.570 3.528 3.600 3.672 3.626 3.700 3.774 3.724 3.800 3.876 3.822 3.900 3.978 3.920 4.000 4.080 4.018 4.100 4.182 4.116 4.200 4.284 4.214 4.300 4.386 4.312 4.400 4.488 4.410 4.500 4.590 4.508 4.600 4.692 4.606 4.700 4.794 4.704 4.800 4.896 4.802 4.900 4.998 4.900 5.000 5.100 4.998 5.100 5.202 5.096 5.200 5.304 5.194 5.300 5.406 5.292 5.400 5.508 5.390 5.500 5.610 5.488 5.600 5.712 5.586 5.700 5.814 5.684 5.800 5.916 5.782 5.900 6.018 5.880 6.000 6.120
(Unless otherwise specified, Ta=25°C) Item Supply Current1 ISS1(µA) Test Circuit 1 Condition Typ. Max. 1.5 1.8 2.0 3.7 4.5 5.0 1.0 2.5 VDD= (-VDET) -0.10V 3.0 6.0 1.1 3.5 7.0 3.3 5.5 3.0
Product Name 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
Hysteresis Voltage VHYS(V) Test Circuit 2 Min. Typ. Max. 0.027 0.045 0.063 0.030 0.050 0.070 0.033 0.055 0.077 0.036 0.060 0.084 0.039 0.065 0.091 0.042 0.070 0.098 0.045 0.075 0.105 0.048 0.080 0.112 0.051 0.085 0.119 0.054 0.090 0.126 0.057 0.095 0.133 0.060 0.100 0.140 0.063 0.105 0.147 0.066 0.110 0.154 0.069 0.115 0.161 0.072 0.120 0.168 0.075 0.125 0.175 0.078 0.130 0.182 0.081 0.135 0.189 0.084 0.140 0.196 0.087 0.145 0.203 0.090 0.150 0.210 0.093 0.155 0.217 0.096 0.160 0.224 0.099 0.165 0.231 0.102 0.170 0.238 0.105 0.175 0.245 0.108 0.180 0.252 0.111 0.185 0.259 0.114 0.190 0.266 0.117 0.195 0.273 0.120 0.200 0.280 0.123 0.205 0.287 0.126 0.210 0.294 0.129 0.215 0.301 0.132 0.220 0.308 0.135 0.225 0.315 0.138 0.230 0.322 0.141 0.235 0.329 0.144 0.240 0.336 0.147 0.245 0.343 0.150 0.250 0.350 0.153 0.255 0.357 0.156 0.260 0.364 0.159 0.265 0.371 0.162 0.270 0.378 0.165 0.275 0.385 0.168 0.280 0.392 0.171 0.285 0.399 0.174 0.290 0.406 0.177 0.295 0.413 0.180 0.300 0.420
Supply Current2 ISS2(µA) Test Circuit 1 Condition Typ. Max. 0.9 2.7
4.0 VDD= (-VDET) -0.13V 4.5
8.0 VDD= (-VDET) +2.0V 9.0 1.2 3.6
5.0 VDD= (-VDET) -0.16V 5.5
10.0 1.3 11.0 3.9
6.0 VDD= (-VDET) -0.20V 6.5
12.0 1.4 13.0 4.2
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