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SP6231

Features: Tiny DFN Package Offers Excellent Thermal Characteristics (also available in NSOIC) Glitch Free Transition between Two Supplies 3.3V Fixed LDO Output Voltage 400µA Quiescent Current @500mA Load Fast Transient Response Current Limit Protection Thermal Shutdown Protection with H...

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SeekIC No. : 004500555 Detail

SP6231: Features: Tiny DFN Package Offers Excellent Thermal Characteristics (also available in NSOIC) Glitch Free Transition between Two Supplies 3.3V Fixed LDO Output Voltage 400µA Quiescent Cur...

SP6231 Data Sheet

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Part Number:
SP6231
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/12/24

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Product Details

Description



Features:

"Tiny" DFN Package Offers Excellent Thermal Characteristics (also available in NSOIC)
"Glitch Free" Transition between Two Supplies
3.3V Fixed LDO Output Voltage
400µA Quiescent Current @500mA Load
Fast Transient Response
Current Limit Protection
Thermal Shutdown Protection with Hysteresis
Auxiliary Supply Control
Internal 0.2Ω PFET Switch Eliminates External FETs
Kelvin Connection with 3.3V Feedback


Application

USB Peripherals
NIC Cards
PCMCIA/PCI Cards
Desktop Computers
Dual Power Systems


Pinout

Connection Diagram


Specifications

VIN .......................................................................................... 0.3V to 7V
VOUT ....................................................................................... 0.3V to 6V
VAUX ....................................................................................... 0.3V to 7V
Storage Temperature ..................................................... -65°C to 150°C
Power Dissipation ......................................................... internally limited
Lead Temperature (Soldering) .... 60 sec. max above 183°C,230°C Peak


Description

The SP6231 is a 500mA, 3.3V LDO with an integrated auxiliary voltage input switch. During normal operation, the SP6231 acts as a standard LDO with an output voltage of 3.3V delivering up to 500mA. When the 5V input drops below 4.4V, the 3.3V, VAUX input is switched to the output through an internal PFET, maintaining a constant "glitch free" output voltage.

The SP6231 is ideally suited for NIC cards and portable battery powered equipment. When a desktop computer reverts to sleep mode, its 5V bus is removed, leaving only the 3.3V bus. The SP6231's auxiliary output passes the 3.3V bus through, keeping the NIC card available for any Wake-On-LAN command. In battery powered applications, the SP6231 draws power from any available 5V USB connection and reverts to battery power when the USB power is removed.




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