MITSMI MM1437 Datasheet
MITSUMI
1423
765
SOP-7
SIP-5
12345
MITSUMI
Regulator+Reset IC MM1437
Regulator+Reset IC
Monolithic IC MM1437
Outline
This IC combines a low saturation 5V regulator, adapted for low power consumption, and a reset function
(regulator output monitoring), for which there is significant market need, that uses the built-in 4.2V detection
delay circuit.
Features
1. Small input/output voltage difference 0.25V typ.
2. High input voltage 18V max.
3. Internal thermal shutdown circuit.
4. Internal current-limiting circuit.
5. Adjustment-free reset detection voltage 4.2V typ.
6. Easy to set delay time from voltage detection to reset release.
Package
SOP-7
SIP-5
Applications
TV, monitors, air conditioners, others.
Pin Assignment
1 GND
2 RESET
3 Cd
4 V
5 VOUT
6 GND
7 N.C
---------------------------------------------------------------------------------------
IN
_
1
2 Cd
3 V
4 VOUT
5 GND
__
RESET
IN
MITSUMI
Equivalent Circuit Diagram
Pin Description
Regulator+Reset IC MM1437
Pin No.
1 (SOP-7)
-
5 (SIP
5)
2 (SOP-7)
1 (SIP
-
5) VOUT pin voltage detection output pin
3 (SOP-7)
2 (SIP
-
5)
Pin name
Functions
GND GND pin
------------------------------------------------------------------------------
RESET
Output pin voltage detection output
------------------------------------------------------------------------------
RESET
pin logic
V
OUT<Vs L
V
OUT>Vs H
–––
RESET
Cd Delay time capacitor pin
------------------------------------------------------------------------------
RESET
pin output delay time
can be set by the capacitance
connected to the Cd pin.
PLH= 100000 · C
t
t
PLH: transmission delay time [S]
C: capacitor value [F]
Equivalent circuit diagram
(SOP-7)
4
-
3 (SIP
5)
5 (SOP-7)
-
4 (SIP
5)
6 (SOP-7)
7
(SOP-7)
VIN Voltage supply input pin
VOUT Regulator output pin
GND GND pin
N.C
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