mm1458 Mitsumi Electronics, Corp., mm1458 Datasheet

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mm1458

Manufacturer Part Number
mm1458
Description
Regulator+reset Monolithic
Manufacturer
Mitsumi Electronics, Corp.
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
mm1458AFBE
Manufacturer:
MITSUMI
Quantity:
20 000
MITSUMI
MITSUMI
Outline
Features
Package
Applications
Pin Assignment
Equivalent Circuit Diagram
This IC, developed for use in CD-ROM drives, combines a 3V regulator adapted to low power consumption
with a much-sought reset function (regulator input monitoring), with internal delay circuit, set to detect 4.2V.
1. Large output current
2. High ripple rejection rate
3. Internal thermal shutdown circuit.
4. Internal current-limiting circuit.
5. Adjustment-free reset detection voltage
6. Easy to set delay time from voltage detection to reset release.
SOP-7
CD-ROM drive.
Regulator+Reset IC
Monolithic IC MM1458
7
1
2
SOP - 7
6
3
5
4
300mA max.
80dB typ.
4.2V typ.
1
2
3
4
5
6
7
---------------------------------------------------------------------
RESET
CONT
GND
GND
V
V
cd
OUT
IN
Regulator+Reset IC MM1458

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mm1458 Summary of contents

Page 1

... Adjustment-free reset detection voltage 6. Easy to set delay time from voltage detection to reset release. Package SOP-7 Applications CD-ROM drive. Pin Assignment 7 1 Equivalent Circuit Diagram 300mA max. 80dB typ. 4.2V typ SOP - 7 7 Regulator+Reset IC MM1458 GND --------------------------------------------------------------------- RESET CONT OUT GND cd ...

Page 2

... Supply voltage Output current Power dissipation Note: When mounted Functions _ _ RESET L H Output OFF ON , when Symbol Ratings T -20~+80 OPR T -40~+125 STG V -0.3~+ OUT glass epoxy board. Regulator+Reset IC MM1458 Equivalent circuit diagram Unit °C °C V 400 mA 800 mW * ...

Page 3

... =3.9V =3.9V, R =0Ω, Ta=-20~+80° Cd=0.0µF PLH t V =4V 5V, Cd=0.1µF PLH1 IN t PHL V V =0.4V OPL OL Regulator+Reset IC MM1458 Ratings Unit -20~80 °C 0~300 mA 0~10 V =1.6V) CONT Min. Typ. Max. Unit =0mA 3 =0mA 4 =0.4V 250 =30mA 3.33 3.40 =150mA 0.15 =30mA 10 20 =5V IN 100 50 ...

Page 4

... MITSUMI MITSUMI Measuring Circuit Application Circuit Note 1 : This regulator is not internally compensated and thus requires an external output-capacitor (C stability. Regulator+Reset IC MM1458 ) for OUT ...

Page 5

... MITSUMI Timing Chart CONT OUT 5V 0V RESET PLH Regulator+Reset IC MM1458 ...

Page 6

... Frequenc (Hz) Allowable loss On board 25 40 1mm 1000 800 600 400 200 Temperatuer ( C) Output voltage vs temperature RESET Load regulation Detecting voltage vs temperature 10000 100000 75 100 125 Regulator+Reset IC MM1458 3.5 3.48 3.46 3.44 3.42 3.4 3.38 3.36 3.34 3.32 3.3 - 100 Temperature ( -10 -20 - 100 ...

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