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Part Number: MB3829

 

MFG: FUJITSU

 

 

Description: This power supply IC incorporates a 4-channel series regulator and a battery backup function. It is a ...


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MB3829 General Description


This power supply IC incorporates a 4-channel series regulator and a battery backup function. It is a multi - function power supply IC with an output control function and momentary power- loss detection circuit, which are both required for mobile telephones. It also incorporates a speaker amplifier and a buzzer driver. Since it has a built - in power system suitable for mobile telephones, it promises equipment downsizing.

MB3829 Maximum Ratings

Parameter Symbol Conditions Value Unit
SCommon to all Power-supply voltage VCC   10 V
Power dissipation PD TA +25°C 860* mW
sections Storage temperature Tstg   -50 to +125 °C
Power supply control Output current IO1 to IO3   -60 mA
section   IO4   -12 mA
Speaker amplifier Output current IO   150 mA
section          
Sounder section Output current IO1 Duty = 50% 240 mA
  IO2 Duty = 50% 120 mA
  IO3 Duty = 50% 60 mA
Voltage monitoring Reset output current IOL, IOH DC -10 to 10 mA
section
*: Value as mounted on double-sided epoxy board 10 *10 cm
NOTE: Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Functional operation should be
           restricted to the conditions as detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions
           for extended periods may affect device reliability.

MB3829 Features

Power consumption during standby       : 0.22 mW (typ.)
4-channel low- saturation voltage type : 6 typ. for channels 1-3
series regulator                                       20 typ. for channel 4
Battery backup function
Momentary power- loss and power- restoration functions
ON/OFF switch circuit with an operating error prevention function
BTL amplifier for driving the speaker     : Output power= 90 mW typ.
Buzzer driver to permit changing the sound volume : 200 mA max.
Power supply voltage drops are accurately detected.
Hysteresis is provided for detection voltage.
Watchdog timer stop function is provided (inhibit pin).
Watchdog monitoring time and reset time are set independently.

MB3829 Connection Diagram

MB3829 Connection Diagram

MB3829 datasheet

MB3829
PDF/DataSheet Download

  • Datasheet: MB3829
  • File Size: 452904 KB
  • Manufacturer: FUJITSU [Fujitsu Media Devices Limited]
  • Click here to Download

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