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.
Features
1.
2.
3.
4.
5.
6.
7.
8.
9.
Maximum supply voltage
Detecting voltage accuracy
Low supply current
Operating supply voltage
Operating temperature
Reset voltage rank
Reset temperature coefficient
Delay Resistance
Output type
7V
±1.0%
0.35µA typ.
0.95 to 6.5V
-40 to +105°C
1.2 to 5.2V (0.1Vstep)
±100ppm/°C typ.
10M
type.
Open drain, CMOS
Packages
SC-82ABB
SOT-25A
PLP-4A
Applications
1.
2.
3.
4.
The reset of CPU and MPU and logic circuit
Battery voltage check
Back-up circuit
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 PST89XA Series
Block Diagram
PST893Axxx Series
(Delay Resistance 10M type, CMOS Output)
VDD
RD
OUT
Vref
GND
CD
: Protection Circuit
PST894Axxx Series
(Delay Resistance 10M type, Open Drain Output)
VDD
RD
OUT
Vref
GND
CD
: Protection Circuit
• 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 PST89XA Series
Pin Assignment
4
3
5
4
1
2
3
4
5
OUT
VDD
GND
NC
CD
1
2
1
2
3
4
GND
VDD
CD
OUT
1
2
3
SC-82ABB
(TOP VIEW)
SOT-25A
(TOP VIEW)
4
Heat
Spreader
Bottom
Note1
3
1
2
3
4
2
GND
OUT
CD
VDD
1
PLP-4A
(TOP VIEW)
Note1 : Heat Spreader Bottom with GND.
Pin Description
SC-82ABB
Pin No.
1
2
3
4
Pin name
GND
VDD
CD
OUT
GND Pin
VDD Pin / Voltage Detect Pin
Capacitor Connect Pin with Delay
Reset Signal Output Pin
Functions
SOT-25A
Pin No.
1
2
3
4
5
Pin name
OUT
VDD
GND
NC
CD
Functions
Reset Signal Output Pin
VDD Pin / Voltage Detect Pin
GND Pin
No Connection
Capacitor Connect Pin with Delay
PLP-4A
Pin No.
1
2
3
4
Pin name
GND
OUT
CD
VDD
GND Pin
Reset Signal Output Pin
Capacitor Connect Pin with Delay
VDD Pin / Voltage Detect Pin
Functions
• 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 PST89XA Series
Absolute Maximum Ratings
Item
Supply Voltage
(Except where noted otherwise Ta=25°C)
Symbol
VDD max.
Ratings
- 0.3~+7.0
PST893 Series
GND- 0.3 ~
VDD max. +0.3
(CMOS Type)
GND- 0.3 ~ +7.0
(N-ch Open Drain Type)
20
20
GND- 0.3 ~ +VDD+0.3
150 (SC-82AB, SOT-25A)
400 (PLP-4A) (Note2)
- 40~+105
- 65~+150
mA
mA
V
mW
mW
°C
°C
Units
V
Output Voltage
OUT
PST894 Series
V
Input Current (V
DD
)
Output current (RESET, RESET)
CD Pin Input Voltage
Power dissipation
Operating temperature
Storage temperature
I
DD
I
OUT
V
CD
Pd
Topr
Tstg
Note2 : With PC board of glass epoxy.
Recommended Operating Conditions
Item
Operating Temperature
Supply Voltage
Symbol
Topr
V
DD
Ratings
- 40~+105
0.95~6.5
Units
°C
V
Model Name
P
S
T
8
9
a
a
Output Type
3
CMOS
Output
Open
drain
Output
b
c
CD pin charge Type Detecting Voltage Rank
A
delay
Resistance
120
V
TH
=1.20V
U
A
b
d
Package
SC-82ABB
R
c
d
e
e
Packing Specifications
R HOUSING
Halogen-contained Product
L HOUSING
Halogen-contained Product
R HOUSING
Halogen-free Product
L HOUSING
Halogen-free Product
4
N
SOT-25A
L
~
520
V
TH
=5.20V
~
R
PLP-4A
M
H
• 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 PST89XA Series
Electrical Characteristics
Item
Symbol
(Except where noted otherwise Ta=25°C)
Rank
120
130
140
150
160
170
180
190
200
210
220
Min.
1.1880
1.1700
1.2870
1.2675
1.3860
1.3650
1.4850
1.4625
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
Typ.
1.2000
1.3000
1.4000
1.5000
1.6000
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
Max.
1.2120
1.2300
1.3130
1.3325
1.4140
1.4350
1.5150
1.5375
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
Units
Circuit
Measurement conditions
Reset threshold
V
TH
Ta=+25°C
Ta=−40~+85°C
230
240
250
260
270
280
290
300
310
320
330
340
V
2
Note3 : This device is tested at Ta=25°C, over temperature limits guaranteed by desigh only.
Note4 : 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.
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