Mitsubishi M51943AGP Datasheet
MITSUBISHI Dig./Ana.INTERFACE
PRELIMINARY
PRELIMINARY
VOLTAGE DETECTING, SYSTEM RESETTING IC SERIES
DESCRIPTION
M51943A are semiconductor integrated circuits designed for
detecting supply voltage and resetting all types of logic circuits
such as CPUs.
They find extensive applications,including battery checking
circuits, level detecting circuit and waveform shaping circuit.
FEATURES
• Few external parts
• Detecting Voltage ………4.25V typ. (4.05V to 4.45V)
• Low threshold operating voltage (Supply voltage to keep
low-state at low supply voltage) …0.6V(TYP.) at RL=22kΩ
• Wide supply voltage range ………… 2 to 17V
• Sudden change in power supply has minimal effect on the ICs
• Wide application range
• Extra small package (SOT-25)
(M51943ASL:3pin SIP,M51943AML:3pin SOP,
M51943AL:5pin SIPalready Mass production)
APPLICATION
• Reset pulse generation for almost all logic circuits
• Battery checking, level detecting, waveform shaping circuits
• Delayed waveform generator
• Switching circuit to a back-up power supply
• DC/DC converter
• Over voltage protection circuit
RECOMMENDED OPERATING CONDITION
• Supply voltage range ………… 2 to 17V
M51943AGP
This product is under the development, therefore the
technical specifications may be changed in the future.
PIN CONFIGURATION (TOP VIEW)
GND
SUB
(GND)
N.C.
1
2
3
Outline SOT-25
M51943AGP
N.C. :NO CONNECTION
OUTPUT
5
SUPPLY
4
VOLTAGE
BLOCK DIAGRAM
3
N.C.
SUPPLY VOLTAGE
4
1.25V
2
SUB
(GND)
1
GND
25µA
typ.
5 OUTPUT
N.C. :NO CONNECTION
1
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1998-3-5
FUNCTION DIAGRAM
MITSUBISHI Dig./Ana.INTERFACE
M51943AGP
VOLTAGE DETECTING, SYSTEM RESETTING IC SERIES
SUPPLY
VOLTAGE
4.25V
H
OUTPUT
STATE
L
ABSOLUTE MAXINUM RATINGS (Ta=25°C Unless otherwise noted)
Symbol
ICC
Isink
VO
Pd
K
-
0
Topr
Tstg
Parameter
Supply Voltage
Output Sink Current
Output Voltage
Power Dissipation
Thermal Derating
Operating Temperature
Storage Temperature
Output with constant current load
5pin SOP(SOT-25)
Ta≥25°C
Test condition
5pin SOP
Ratings Unit
18
6
Vcc
200
2
-30 to +85
-40 to +125
mA
mW
mW/°C
V
V
°C
°C
ELECTRICAL CHARACTERISTICS (Ta=25°C, Unless otherwise noted)
Symbol
VS
∆VS
VS/∆T
ICC
Vsat
VOPL
IOC
VOH
tPHL
tPLH
Parameter
Detecting Voltage
Hysterisis Voltage
Detecting Voltage
Temperature Coefficient
Circut Current
Output Saturation Voltage
Threshold
Operating Voltage
Output Load Current
Output High Voltage
Propagation Deray Time
Test condition
VCC=5V
VCC=4V,Isink=4mA
Minimum supply voltage
for IC operation
VCC=5V,VO=1/2Vcc
Response time when Vcc changes H to L
Response time when Vcc changes L to H
RL=2.2kΩ,Vsat≤0.4V
RL=100kΩ,Vsat≤0.4V
2
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MIN
4.05
30
Limits
TYP
4.25
50
0.01
370
0.2
0.67
0.55
-25-40
Vcc-0.06Vcc-0.2
MAX
4.45
80
560
0.4
0.8
0.7
-17
6
3
Unit
V
mV
%/°C
µA
V
V
µA
V
µs
1998-3-5
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