OBSOLETE

SI-8005Q

NR111E

Package Image

Package : HSOP8

RoHS : YES

Data Sheet(994KB)

The SI-8005Q is a buck switching regulator IC with a built-in power MOS.
Due to a current control system, it is applicable to such a super low ESR capacitor as a ceramic capacitor.
It is provided with various protection functions such as overcurrent protection, low input prohibition, overheat protection etc.
In order to protect the IC against in-rush current at start-up, the soft start function is provided.
The soft start time can be set by connecting external capacitors.
A function to turn on/off external signals is also provided and by sending external signal to the EN terminal, the SI-8105Q can be turned on/off.
This device is supplied in the small and thin type HSOP 8-pin package including a heat slug on the backside.
The SI-8105QL is mounted in the DIP 8-pin package for flow mounting /power supply board (single side surface board).

Data Download

Design Support

  • Technical Documents

Technical Documents

Features

    ・Compact surface-mount（HSOP8） package
    ・Current mode control
    ・Output current: 3.5A
    ・High efficiency: 90% （at TYP, Vo＝5V）
    ・Built-in reference oscillator （500kHz）
    ・Ceramic capacitors can be used during output
    ・Built-in drooping-type-overcurrent and thermal protection circuits
    ・Built-in soft start circuit
    ・Built-in ON/OFF function (Active Hi)）
    ・Low current consumption during off

Application

・DVD recorders, FPD-TV
・On-board local power supplies
・OA equipment

Specifications

Built-in Power Power IC
Output Method Variable
Output Voltage 24.0 V
Output Current 3.5 A
Input Voltage Range 4.75 to 28 V
Operating Frequency 500 kHz
Synchronous / Asynchronous Asynchronous
Current Mode Control YES
Maximum Input Voltage 28.00 V
Output On / Off YES
Low ESR Capacitor Support YES
Overcurrent Protection Drooping Type
Phase Compensation External
Thermal Protection YES
UVLO YES
Package Weight (Typ.)
Automotive Qualified

Typical Application

Typical Application

Block Diagram

Block Diagram

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