OBSOLETE

SI-8405NL

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Package : SOP8

RoHS : YES

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The SI-8405NL is synchronous rectification buck converter IC. The IC has the various protections such as the overcurrent protection and the undervoltage lockout.
An adjustable Soft-Start by an external capacitor prevents the excessive inrush current at turn-on. The ICs integrate phase compensation circuit which reduces the number of external components and simplifies the design of customer application.
The ON/OFF pin (EN Pin) turns the regulator on or off and helps to achieve low power consumption requirements.

Data Download

Design Support

  • Technical Documents

Technical Documents

Features

    • Synchronous Rectification
    • Soft-start Period Adjustment by External Capacitor
    • Enable Function
    • Protections:
    　Overcurrent Protection (OCP): Drooping Type, Autorestart
    　Undervoltage Lockout (UVLO)

Application

• LCD-TV
• Notebook PC
• On-board local power supply
• OA equipment

Specifications

Built-in Power Controller
Output Method Variable
Output Voltage 4.0 V
Output Current
Input Voltage Range 3.0 to 5.5 V
Operating Frequency 250 kHz
Synchronous / Asynchronous Synchronous
Current Mode Control YES
Maximum Input Voltage 5.50 V
Output On / Off YES
Low ESR Capacitor Support NO
Overcurrent Protection Drooping Type
Phase Compensation External
Thermal Protection NO
UVLO YES
Package Weight (Typ.)
Automotive Qualified

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