PST893B160NM [MITSUMI]
System Reset IC with delay;型号: | PST893B160NM |
厂家: | MITSUMI ELECTRONICS, CORP. |
描述: | System Reset IC with delay |
文件: | 总17页 (文件大小:144K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
MITSUMI
System Reset IC with delay PST89XB Series
System Reset IC with delay
Monolithic IC PST89XB Series
Outline
This IC is a reset IC for turning on/off power supply and power flicker in CPU or logic systems.
This IC can change delay time by an external capacitor.
Charging method of the capacitor, is current source type.
Current source type can reduce temperature fluctuations in the delay time. td typ. 6% (Ta= 40°C to 105°C), It is ideal
-
for a wide set the operating temperature range.
Features
1. Maximum supply voltage
2. Detecting voltage accuracy
3. Low supply current
7V
1.0%
0.35µA typ.
0.95 to 6.5V
4. Operating supply voltage
5. Operating temperature
6. Reset voltage rank
-40 to +105°C
1.6 to 5.2V (0.1Vstep)
100ppm/°C typ.
100nA typ.
7. Reset temperature coefficient
8. Current source
9. Output type
Open drain, CMOS
Delay time temperature characteristics
CD=0.01[µF]
0.30
0.25
0.20
Current source type
0.15
0.10
0.05
Delay Resistance type
0.00
−50
−25
0
25
50
75
100
Temperature (ºC)
Packages
SC-82ABB
SOT-25A
Applications
1. The reset of CPU and MPU and logic circuit
2. Battery voltage check
3. Back-up circuit
4. Level detector
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
Block Diagram
PST893Bxxx
VDD
Charge current
OUT
Vref
GND
: Protection Circuit
CD
PST894Bxxx
VDD
Charge current
OUT
Vref
GND
: Protection Circuit
CD
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
Pin Assignment
1
2
3
4
5
OUT
VDD
GND
NC
4
1
3
2
5
1
4
3
1
2
3
4
GND
VDD
CD
2
OUT
CD
SC-82ABB
(TOP VIEW)
-
SOT 25A
(TOP VIEW)
Pin Description
SC-82ABB
SOT-25A
Pin No. Pin name
Functions
Pin No. Pin name
Functions
1
2
3
4
GND
VDD
CD
GND Pin
1
2
3
4
5
OUT
VDD
GND
NC
Reset Signal Output Pin
VDD Pin / Voltage Detect Pin
GND Pin
VDD Pin / Voltage Detect Pin
Capacitor Connect Pin with Delay
Reset Signal Output Pin
OUT
No Connection
CD
Capacitor Connect Pin with Delay
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
(Except where noted otherwise Ta=25°C)
Absolute Maximum Ratings
Item
Symbol
Ratings
0.3~+7.0
GND
VDD max. +0.3
Units
Supply Voltage
VDD max.
-
V
-
0.3 ~
PST893 Series
Output Voltage
OUT
V
PST894 Series
GND-0.3 ~+7.0
Input Current (VDD)
Output Current(OUT)
CD Pin Input Voltage
Power dissipation
IDD
IOUT
VCD
Pd
0~20
0~20
mA
mA
V
GND
-
0.3 ~ VDD max. +0.3
150
mW
°C
Operating temperature
Storage temperature
Topr
Tstg
-
-
40~+105
65~+125
°C
Recommended Operating Conditions
Item
Symbol
Topr
Ratings
Units
Operating Ambient temperature
Operating voltage
-
40~+105
°C
V
VDD
0.95~6.5
Model Name
P
S
T
8
9
c
B
b
a
c
d
e
a
b
d
e
Output Type CD pin charge Type Detecting Voltage Rank
Package
Packing Specifications
CMOS
Output
Current
source
R HOUSING
Halogen-free Product
3
4
B
160
520
U
N
SC-82ABB
M
H
Setting of
the detection
voltage
from 1.6V
to 5.2V,0.1V
step.
Open
drain
Output
L HOUSING
Halogen-free Product
SOT-25A
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
(Except where noted otherwise Ta=25°C)
Electrical Characteristics
Item
Symbol Measurement conditions
Rank
Min.
Typ.
1.6000
Max.
1.6160
1.6400
1.7170
1.7425
1.8180
1.8450
1.9190
1.9475
2.0200
2.0500
2.1210
2.1525
2.2220
2.2550
2.3230
2.3575
2.4240
2.4600
2.5250
2.5625
2.6260
2.6650
2.7270
2.7675
2.8280
2.8700
2.9290
2.9725
3.0300
3.0750
3.1310
3.1775
3.2320
3.2800
3.3330
3.3825
3.4340
3.4850
3.5350
3.5875
3.6360
3.6900
3.7370
3.7925
3.8380
3.8950
3.9390
3.9975
4.0400
4.1000
Units Circuit
1.5840
1.5600
1.6830
1.6575
1.7820
1.7550
1.8810
1.8525
1.9800
1.9500
2.0790
2.0475
2.1780
2.1450
2.2770
2.2425
2.3760
2.3400
2.4750
2.4375
2.5740
2.5350
2.6730
2.6325
2.7720
2.7300
2.8710
2.8275
2.9700
2.9250
3.0690
3.0225
3.1680
3.1200
3.2670
3.2175
3.3660
3.3150
3.4650
3.4125
3.5640
3.5100
3.6630
3.6075
3.7620
3.7050
3.8610
3.8025
3.9600
3.9000
160
1.7000
1.8000
1.9000
2.0000
2.1000
2.2000
2.3000
2.4000
2.5000
2.6000
2.7000
2.8000
2.9000
3.0000
3.1000
3.2000
3.3000
3.4000
3.5000
3.6000
3.7000
3.8000
3.9000
4.0000
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340
350
360
370
370
390
400
Reset threshold
(Note1)
Ta=+25°C
VTH
V
2
Ta=−40~+85°C
Note1 : This device is tested at Ta=25°C, over temperature limits guaranteed by desigh only.
Note2 : The parameter is guaranteed by design.
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
Item
Symbol Measurement conditions
Rank
Min.
Typ.
4.1000
Max.
4.1410
4.2025
4.2420
4.3050
4.3430
4.4075
4.4440
4.5100
4.5450
4.6125
4.6460
4.7150
4.7470
4.8175
4.8480
4.9200
4.9490
5.0225
5.0500
5.1250
5.1510
5.2275
5.2520
5.3300
Units Circuit
4.0590
3.9975
4.1580
4.0950
4.2570
4.1925
4.3560
4.2900
4.4550
4.3875
4.5540
4.4850
4.6530
4.5825
4.7520
4.6800
4.8510
4.7775
4.9500
4.8750
5.0490
4.9725
5.1480
5.0700
410
4.2000
4.3000
4.4000
4.5000
4.6000
4.7000
4.8000
4.9000
5.0000
5.1000
5.2000
420
430
440
450
460
470
480
490
500
510
520
Reset threshold
(Note1)
Ta=+25°C
VTH
V
2
Ta=−40~+85°C
Note1 : This device is tested at Ta=25°C, over temperature limits guaranteed by desigh only.
Note2 : The parameter is guaranteed by design.
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
Item
Symbol Measurement conditions
Rank
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340
350
360
370
380
390
400
410
420
430
440
450
460
470
480
490
500
510
520
Min.
0.048
0.051
0.054
0.057
0.060
0.063
0.066
0.069
0.072
0.075
0.078
0.081
0.084
0.087
0.090
0.093
0.096
0.099
0.102
0.105
0.108
0.111
0.114
0.117
0.120
0.123
0.126
0.129
0.132
0.135
0.138
0.141
0.144
0.147
0.150
0.153
0.156
Typ.
0.080
0.085
0.090
0.095
0.100
0.105
0.110
0.115
0.120
0.125
0.130
0.135
0.140
0.145
0.150
0.155
0.160
0.165
0.170
0.175
0.180
0.185
0.190
0.195
0.200
0.205
0.210
0.215
0.220
0.225
0.230
0.235
0.240
0.245
0.250
0.255
0.260
Max.
0.128
0.136
0.144
0.152
0.160
0.168
0.176
0.184
0.192
0.200
0.208
0.216
0.224
0.232
0.240
0.248
0.256
0.264
0.272
0.280
0.288
0.296
0.304
0.312
0.320
0.328
0.336
0.344
0.352
0.360
0.368
0.376
0.384
0.392
0.400
0.408
0.416
Units Circuit
Reset threshold
hysteresis
VTH VDD=0V VTH+1V 0V
V
2
Note1 : This device is tested at Ta=25°C, over temperature limits guaranteed by desigh only.
Note2 : The parameter is guaranteed by design.
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
Item
Symbol Measurement conditions
IDD
Rank
Min.
Typ.
Max.
Units Circuit
160
~ 520
Supply Current
VDD=VTH+1V
0.35
1.0
µA
ppm/°C
µs
1
2
6
6
Reset threshold temp. coefficient
160
~ 520
V
TH/°C Ta=
-40~+85°C
100
15
(Note1)
L transfer delay time
(Note2)
VDD=VTH+0.4V
0.4V
160
~ 520
tPHL
tPLH
IOL1
IOL2
IOL3
IOL4
2
100
100
VTH-
H transfer delay time
(Note2)
VDD=VTH+0.4V
0.4V
160
~ 520
2
15
µs
VTH-
160
~ 520
VDD=0.95V, VDS=0.05V
VDD=1.2V, VDS=0.5V
0.01
0.23
1.60
3.20
0.10
2.00
8.00
12.0
160
~ 520
"L" Output Current
mA
mA
3
3
VDD=2.4V, VDS=0.5V
VTH 2.5V
250
~ 520
VDD=3.6V, VDS=0.5V
VTH 3.7V
370
~ 520
VDD=4.8V, VDS=0.5V
VTH 4.7V
160
~ 470
IOH1
IOH2
Ileak
ID
0.36
0.46
0.62
0.75
PST893 series only
"H" Output Current
VDD=6.1V, VDS=0.5V
PST893 series only
160
~ 520
VDD=6.5V, OUT=6.5V
PST894 series only
160
~ 520
Output Leakage
Current
0.1
µA
nA
V
3
5
4
5
5
CD Pin charge
Current
VDD=VTH+1V
VDS=0V
160
~ 520
90
100
110
CD Pin Threshold
Voltage
160
~ 520
VTCD
ICD1
ICD2
VDD=VTH×1.1V
VDD×0.3 VDD×0.5 VDD×0.7
CD Pin Output
Current1
VDD=0.95V
VDS=0.1V
160
~ 520
2.0
30.0
800
µA
µA
CD Pin Output
Current2
VDD=1.5V
VDS=0.5V
160
~ 520
200
Note1 : This device is tested at Ta=25°C, over temperature limits guaranteed by desigh only.
Note2 : The parameter is guaranteed by design.
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
Test Circuit
(1)
(2)
IDD
Note3
470k
VDD
VDD
VIN
PST
89XX
VIN
PST
89XX
OUT
CD
OUT
CD
GND
GND
(3)
(4)
Note3
470k
VDD
VDD
IOUT
VIN
PST
89XX
VIN
PST
89XX
CD
OUT
OUT
CD
VDS
VDS
GND
GND
(5)
VDD
ICD
CD
VIN
PST
89XX
OUT
VDS
GND
(6)
Note3
VTH+0.4V
VTH-0.4V
Input Voltage
VTH
470k
VDD
GND
VIN
PST
89XX
100%
CD
OUT
Output Voltage
50%
GND
VDS
GND
tPHL
tPLH
Note3 : PST894series only
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
Timing Chart
VSET
Supply Voltage
Release voltage
(VTH+ VTH)
CD
Pin Thereshold voltage
(VTCD)
Capacitor Voltage
GND
Output Voltage
GND
(tD)
Delay Time
: Capacitor
: Supply voltage
: CD Pin Charge current 100nA. typ
CD
VSET
ID
tD=C×0.5×VSET / ID (s)
VTH
V
VTH+ VTH
VTH
VDD
t
V
tPLH
OUT
tHL
t
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
Operation Explanation
· Detection Voltage
Refers to the VDD voltage when the voltage of the OUT terminal voltage switches from H level to L level
when reducing the VDD voltage.
· Release Voltage
Refers to the VDD voltage when the voltage of the OUT terminal voltage switches from L level to H level
when raising the VDD voltage.
· Hysteresis Voltage
Hysteresis voltage = release voltage - detection voltage, and refers to the difference in voltage.
· L Propagation Delay Time
Refers to the time from when the VDD voltage decreases below the detection voltage to when the OUT
terminal voltage switches from H level to L level, and is the response time within the reset IC when a
reduction in the supply voltage is detected.
· H Propagation Delay Time
Refers to the time from when the VDD voltage decreases below the release voltage to when the OUT
terminal voltage switches from L level to H level, and is the response time within the reset IC when the
power supply starts up.
· Release Delay Time
Refers to the delay time for switching the OUT terminal during the condenser charging time due to the CD
terminal condenser and charging current within the reset IC.
Configured with the time or delay until voltage stabilizes when the set power supply starts up.
· ”L” Output Current
Drain current of the OUT terminal NMOS. The synchronization current that turns the NMOS ON and sets
the OUT terminal voltage to L level when VDD < detection voltage. Select the appropriate pull-up resistance
for the synchronization capability for open drain output parts. If the pull-up resistance value is too low, VDS
is generated so that L level voltage 0.3V, and may not reach 0V.
· ”H” Output Current
The drain current of the OUT terminal PMOS for CMOS output parts. The synchronization current that turns
the PMOS ON and sets the OUT terminal voltage to H level when VDD > release voltage.
· Delay Terminal Charging Current
Refers to the current for charging the condenser connected to the CD terminal to generate the release
delay time.
· Delay Terminal Threshold Value Voltage
Refers to the CD terminal voltage refers to the threshold voltage that is input into subsequent inverters to
reverse the inverter output.
· Delay Terminal Output Current
The drain current of the CD terminal NMOS. Refers to the current for charging the condenser connected to
the CD terminal.
As the discharge current capability is small at around several 100 µA, a delay is generated for the OUT
terminal response time corresponding to the discharge time as the CD terminal capacity value increases.
Check operation when the delay is 1µF or more in particular.
· Delay Terminal
The delay terminal is the current source and has a high impedance. If board leakage, condensation or other
leakages occur at the CD terminal, logical inversion occurs at subsequent inverters and logical inversion
also occurs at the OUT terminal.
The delay terminal has a high impedance and logical inversion may occur due to factors such as external
noise, so using the terminal while OPEN is not recommended.
Use the delay terminal by connecting it with 100 pF or more.
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
For the setting of the release delay time
• Operation of the power supply start-up
1 It raised to VDD = 0V VSET.
2 Comparator to detect release voltage (detection voltage + hysteresis voltage) or more.
3 Discharge NMOS of the CD pin : ON OFF.
It is charged the capacitor of the CD pin from delay pincharge current.
4 Capacitor of the CD pin is charged, the inverter detects the above "0.5×VDD".
The threshold voltage of the inverter is the following.
CD Pin Threshold Voltage VDD×0.3min.
-VDD×0.5typ. -VDD×0.7max
5 OUT : L H, it is released from the reset.
• For the setting of the release delay time PST89xB series
A constant current source, relationship charging time of the capacitor
Q=I×t=C×V
Release delay time, it is time to be "CD Pin Voltage" = "the threshold voltage of the inverter"
VTCD typ = 0.5×VSET ".
It will be prompted by the following equation.
tD typ = C×VTCD typ / ID = C×0.5×VSET / ID (s)
CD : Capacitor
VSET : Supply voltage
ID : CD pin charge current 100nA typ.
VDD
COMP
inverter
VSET
VIN
OUT
GND
OUT
GND
GND
Delay time
CD
Discharge
NMOS
C
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
• PST89xB series release delay time TYPICAL PERFORMANCE CHARACTERISTICS
Release delay time
1,000
100
10
CD=0.01µF
CD=1000pF
CD=100pF
1
0
0
1
2
3
4
5
6
7
8
VSET (V)
VSET
VIN
GND
OUT
GND
Delay time
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
Application Circuits
VDD
VDD
VIN
CD
PST
89XX
Logic
System
OUT
RESET
GND
PST894 Series only
VIN
VIN
VDD
VDD
OUT
CD
CD
PST
894
PST
893
OUT
GND
GND
•
We shall not be liable for any trouble or damage caused by using 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 therefore.
Please note that there is any possibility of circuit oscillation when resistance put in the line VIN.
Recommend 15k ohm or less for PST894.
Please do not put resistance for PST893.
TYP hysteresis voltage of PST89 series is a detecting voltage × 0.05.
During power-up, and to release reset, it is time that it has become more than the
release voltage (= detection voltage + hysteresis voltage).
By calculating the variation of the power supply and the detection voltage and the release voltage,
please select the detecting voltage rank.
•
•
•
In CD pin, please do not use from the external voltage, and current source.
Between CD pin ~ GND pin, please use by connecting more than capacitor 100pF.
When the CD terminal capacitance value is greater than or more 1µF, time of the charge and
discharge, the response of the OUT waveform is delayed.
To power reduction of short-pulse, and less likely to respond.
By the power supply voltage drop due to instantaneous interruption, the ack of discharge current
capability of CD terminal, is not completely discharge, increasing again power-than release delay
time of setting, it will be shorter.
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
(Except where noted otherwise Ta=25°C)
Characteristics (2.8V)
Detecting Voltage
Supply Current
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
1.0
0.8
0.6
0.4
0.2
0.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Input Voltage (V)
0
1
2
3
4
5
6
7
Input Voltage (V)
CD Pin Charge Current
CD Pin Output Current
110
108
106
104
102
100
98
20
18
16
14
12
10
8
96
6
94
4
92
2
90
0
0
1
2
3
4
5
6
7
0
1
2
3
4
5
Input Voltage (V)
Input Voltage (V)
N-ch Output Current
N-ch Output Current
20
18
16
14
12
10
8
3.0
VDD=2.4V
2.5
2.0
1.5
1.0
0.5
0.0
VDD=2.4V
VDD=1.2V
6
VDD=1.2V
1.5
VDD=0.95V
4
2
0
VDD=0.95V
0.0
0.5
1.0
2.0
0.0
0.2
0.4
0.6
0.8
1.0
VDS (V)
VDS (V)
Note : These are typical characteristics.
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
Detecting Voltage
- Temperature
Hysteresis Voltage
- Temperature
3.00
2.90
2.80
2.70
2.60
200
180
160
140
120
100
80
−40 −20
0
20 40 60 80 100
−40 −20
0
20 40 60 80 100
Temperature (°C)
Temperature (°C)
"L"Output Current 1
-
Temperature
"L"Output Current 2 - Temperature
0.50
5.0
0.40
0.30
0.20
0.10
0.00
4.0
3.0
2.0
1.0
0.0
−40 −20
0
20 40 60 80 100
−40 −20
0
20 40 60 80 100
Temperature (°C)
Temperature (°C)
"L"Output Current 3
- Temperature
20
18
16
14
12
10
8
6
4
2
0
−40 −20
0
20 40 60 80 100
Temperature (°C)
Note : These are typical characteristics.
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
System Reset IC with delay PST89XB Series
CD Pin Charge Current
- Temperature
CD Pin Threshold Voltage
- Temperature
150
140
130
120
110
100
90
80
70
60
50
3.0
2.5
2.0
1.5
1.0
0.5
0.0
−40 −20
0
20 40 60 80 100
−40 −20
0
20 40 60 80 100
Temperature (°C)
Temperature (°C)
CD Pin Output Current 1
-
Temperature
CD Pin Output Current 2 - Temperature
500
5.0
400
300
200
100
0
4.0
3.0
2.0
1.0
0.0
−40 −20
0
20 40 60 80 100
−40 −20
0
20 40 60 80 100
Temperature (°C)
Temperature (°C)
Note : These are typical characteristics.
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
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