PST3140 [MITSUMI]
CMOS System Reset; CMOS系统复位
| 型号： | PST3140 |
| 厂家： | 
MITSUMI ELECTRONICS, CORP. |
| 描述： | CMOS System Reset |
| 文件： | 总9页 (文件大小：177K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CMOS System Reset PST3XXX
MITSUMI
CMOS System Reset
Monolithic IC PST3XXX Series
Outline
This IC is a system reset IC developed using the CMOS process. Super low consumption current of 0.25µA
typ. has been achieved through use of the CMOS process. Also, detection voltage is high precision detection
of 2ꢀ.
Features
(1) Super low consumption current
(2) High precision detection voltage
(3) Hysteresis characteristic
(4) Operating range
0.25µA typ. (when VDD = Vs + 1V)
2ꢀ
5ꢀ typ.
0.95 ~ 10V
-30 ~ +85°C
2 ~ 6V (0.1V step)
(5) Wide operating temperature range
(6) Detection voltage
Package
SC-82AB (PST31XX, PST32XX)
SOT-25 (PST33XX, PST34XX)
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
5
1
4
3
4
1
3
2
1
2
3
4
5
OUT
VDD
VSS
1
2
3
4
OUT
VDD
NC
2
NC
VSS
SC-82AB
SOT-25
CMOS System Reset PST3XXX
MITSUMI
Equivalent Circuit Diagram
PST31XX
PST32XX
PST33XX
PST34XX
CMOS System Reset PST3XXX
MITSUMI
(Ta=25°C)
Absolute Maximum Ratings
Item
Symbol
Rating
Unit
°C
°C
V
mW
Storage temperature
Operating temperature
Power supply voltage
Allowable loss
TSTG
TOPR
VDDmax.
Pd
-
40~+125
-30~+85
+12
150
Electrical Characteristics
(1) Detection Voltage Table Ta=25°C
SOT-25
CMOS output
SC-82
Detection voltage
N-ch open drain
PST3220
PST3221
PST3222
PST3223
PST3224
PST3225
PST3226
PST3227
PST3228
PST3229
PST3230
PST3231
PST3232
PST3233
PST3234
PST3235
PST3236
PST3237
PST3238
PST3239
PST3240
PST3241
PST3242
PST3243
PST3244
PST3245
PST3246
PST3247
PST3248
PST3249
PST3250
PST3251
PST3252
PST3253
PST3254
PST3255
PST3256
PST3257
PST3258
PST3259
PST3260
CMOS output
PST3320
PST3321
PST3322
PST3323
PST3324
PST3325
PST3326
PST3327
PST3328
PST3329
PST3330
PST3331
PST3332
PST3333
PST3334
PST3335
PST3336
PST3337
PST3338
PST3339
PST3340
PST3341
PST3342
PST3343
PST3344
PST3345
PST3346
PST3347
PST3348
PST3349
PST3350
PST3351
PST3352
PST3353
PST3354
PST3355
PST3356
PST3357
PST3358
PST3359
PST3360
N-ch open drain
PST3420
PST3421
PST3422
PST3423
PST3424
PST3425
PST3426
PST3427
PST3428
PST3429
PST3430
PST3431
PST3432
PST3433
PST3434
PST3435
PST3436
PST3437
PST3438
PST3439
PST3440
PST3441
PST3442
PST3443
PST3444
PST3445
PST3446
PST3447
PST3448
PST3449
PST3450
PST3451
PST3452
PST3453
PST3454
PST3455
PST3456
PST3457
PST3458
PST3459
PST3460
2.0V 2ꢀ
2.1V 2ꢀ
2.2V 2ꢀ
2.3V 2ꢀ
2.4V 2ꢀ
2.5V 2ꢀ
2.6V 2ꢀ
2.7V 2ꢀ
2.8V 2ꢀ
2.9V 2ꢀ
3.0V 2ꢀ
3.1V 2ꢀ
3.2V 2ꢀ
3.3V 2ꢀ
3.4V 2ꢀ
3.5V 2ꢀ
3.6V 2ꢀ
3.7V 2ꢀ
3.8V 2ꢀ
3.9V 2ꢀ
4.0V 2ꢀ
4.1V 2ꢀ
4.2V 2ꢀ
4.3V 2ꢀ
4.4V 2ꢀ
4.5V 2ꢀ
4.6V 2ꢀ
4.7V 2ꢀ
4.8V 2ꢀ
4.9V 2ꢀ
5.0V 2ꢀ
5.1V 2ꢀ
5.2V 2ꢀ
5.3V 2ꢀ
5.4V 2ꢀ
5.5V 2ꢀ
5.6V 2ꢀ
5.7V 2ꢀ
5.8V 2ꢀ
5.9V 2ꢀ
6.0V 2ꢀ
PST3120
PST3121
PST3122
PST3123
PST3124
PST3125
PST3126
PST3127
PST3128
PST3129
PST3130
PST3131
PST3132
PST3133
PST3134
PST3135
PST3136
PST3137
PST3138
PST3139
PST3140
PST3141
PST3142
PST3143
PST3144
PST3145
PST3146
PST3147
PST3148
PST3149
PST3150
PST3151
PST3152
PST3153
PST3154
PST3155
PST3156
PST3157
PST3158
PST3159
PST3160
Detection voltage measurement conditions: VDD = 9V 0V, measurement circuit 1
CMOS System Reset PST3XXX
MITSUMI
(Except where noted otherwise, Ta=25°C)
Electrical Characteristics
Measurement
Item
Symbol
Vs
Measurement conditions
Min. Typ. Max.
Vs 0.03 Vs 0.05 Vs 0.08
0.01
Unit
V
circuit
Hysteresis voltage
Detection voltage
1
Vs/ T
ICC
1
1
2
Ta=
-30~+85°C
%/°C
µA
temperature coefficient
Consumption current
VDD=Vs+1V
1
0.25
0.5
1
*
VDD=1.2V,
N-ch output current 1
N-ch output current 2
N-ch output current 3
0.23
1.6
mA
Nch : VDS=0.5V
VDD=2.4V,
2
2
3
3
3.7
7.0
mA
mA
mA
mA
Nch : VDS=0.5V,Vs>2.5V
VDD=3.6V,
Nch : VDS=0.5V,Vs>3.7V
VDD=4.8V,
1
1
*
*
3.2
P-ch output current 1
P-ch output current 2
2
2
0.36
0.46
0.62
0.75
*
*
Pch : VDS=0.5V,Vs<4.7V
VDD=6.0V,
Pch : VDS=0.5V,Vs<5.9V
1
1
*
*
Notes: 1 Vs is detection voltage
*
2 Only for CMOS output products
*
Measuring Circuit
Measuring Circuit 1
Measuring Circuit 2
RL is not needed for CMOS output.
Measuring Circuit 3
CMOS System Reset PST3XXX
MITSUMI
Description of Operation
(1) VDD > VS, VOUT: H (M1: ON, M2, M3: OFF)
When VDD is gradually lowered from the above state, detection voltage is as follows.
Detection voltage: (R1 + R2 + R3) / (R2 + R3) VREF
(2) VDD < VS, VOUT: L (M1: OFF, M2, M3: ON)
When VDD is gradually raised from the above state, release voltage is as follows.
Release voltage = (R1 + R2) / (R2) VREF
(3) Hysteresis voltage = (release voltage) - (detection voltage).
(4) When VDD drops and goes below the minimum operating voltage, output is undefined; when output is
pulled up, output becomes VDD.
(5) VREF and detection resistors
1) The reference voltage source (VREF) for this IC is 0.8V typ. This gives excellent low power consumption
and temperature characteristics.
2) The high resistance process is used for resistors R1, R2 and R3 to achieve low consumption current for
the IC.
(6) Through current flows momentarily for detection and release. When using high VDD pin impedance, the
through current may cause oscillation.
(Example) Detection voltage changed by external settings
The IC input voltage fluctuates due to the
*
through current R11 voltage drop, and
an oscillation state where detection and
release are repeated may occur.
With CMOS output types, do not use as
*
shown in the diagram at left.
CMOS System Reset PST3XXX
MITSUMI
Timing Chart
(2)
(1)
(3)
V
VS
VS
VDD
V
(4)
VOUT
(1) ~ (4) in the above diagram correspond to the Description of Operation.
Vs detection voltage
Vs hysteresis voltage
Application Circuits
Normal reset circuit
PST31XX, PST33XX (CMOS output products)
PST32XX, PST34XX (N-ch open drain output products)
CMOS System Reset PST3XXX
MITSUMI
Power ON reset circuit
A power ON reset circuit can be configured on PST32XX, PST34XX (N-ch open drain output products).
PST32XX, PST34XX (N-ch open drain output products)
VDD (V)
OUT (V)
T (S)
T (S)
If there is a problem with delay in rise time, insert a Di.
VDD (V)
OUT (V)
T(S)
T (S)
If power supply rises suddenly, output may go "H" momentarily when below minimum operating
voltage (0.95V), as shown in the above diagram.
CMOS System Reset PST3XXX
MITSUMI
(For products with PST3128 detection voltage 2.8V typ.)
Characteristics
Consumption current (VDD = 3.8V) temperature
Detection voltage temperature
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
3
2.95
2.9
2.85
2.8
2.75
2.7
2.65
2.6
2.55
2.5
0.05
0
- -
40 20
0
20 40 60 80 100
- -
40 20
0
20 40 60 80 100
Temperature (°C)
Temperature (°C)
Release voltage temperature
Hysteresis voltage temperature
3
2.9
2.8
2.7
2.6
2.5
200
150
100
50
0
- -
40 20
- -
40 20
0
20 40 60 80 100
0
20 40 60 80 100
Temperature (°C)
Temperature (°C)
N-ch output current temperature (VDS = 0.5V)
P-ch output current temperature (VDS = 0.5V)
3
2.5
2
3
2.5
2
1.5
1
1.5
1
0.5
0.5
0
0
- -
40 20
- -
40 20
0
20 40 60 80 100
0
20 40 60 80 100
Temperature (°C)
Temperature (°C)
CMOS System Reset PST3XXX
MITSUMI
Output voltage power supply voltage
Consumption current power supply voltage
6
5
4
3
2
1
0
1
0.8
0.6
0.4
0.2
0
Detection
Release
4
0
1
2
3
5
0
2
4
6
8
10
Power supply voltage (V)
Power supply voltage (V)
Transfer delay time characteristics (N-ch open drain output products)
PST3428 response characteristics
PST3446 response characteristics
100
10
100
10
tPHL
1
tPHL
1
0.1
0.1
tPLH
tPLH
0.01
0.01
0.001
0.001
0.00001 0.0001
0.001
0.01
0.1
0.00001 0.0001
0.001
0.01
0.1
Output capacitance (µF)
Output capacitance (µF)
VS+2.0V
VS+2.0V
Input
voltage
1.2V
VSS
1.2V
VSS
7.0V
Transfer delay time measurement circuit
Output
voltage
3.5V
VSS
tPHL
tPLH
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