OBSOLETE

[ Alternative : NR111E]

SI-8005Q

Package Image

Package:HSOP8

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).

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.) g

Typical Application

Typical Application

Block Diagram

Block Diagram

Questions or Comments?

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