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STK740-441

Features: • Adoption of Sanyo IMST ; Insulated Metal Substrate Technology, allows the circuit to be operated without using a heat sink (see No Fin Output Current Derating chart in the page 6).• Slim package reduces mounting space.• Typical efficiency of 88% at DC 5V input, 2.5A...

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SeekIC No. : 004508004 Detail

STK740-441: Features: • Adoption of Sanyo IMST ; Insulated Metal Substrate Technology, allows the circuit to be operated without using a heat sink (see No Fin Output Current Derating chart in the page 6...

STK740-441 Data Sheet

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Part Number:
STK740-441
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

• Adoption of Sanyo IMST ; Insulated Metal Substrate Technology, allows the circuit to be operated without using a heat sink (see "No Fin Output Current Derating" chart in the page 6).
• Slim package reduces mounting space.
• Typical efficiency of 88% at DC 5V input, 2.5A output.
• Fine adjustment of output voltage enable.
• 50 kHz operating frequency.
• Low-RON resistance power MOSFET adopted.
• Low-VF Schottky barrier diode adopted.




Application

• 3.3V local power supply for the logic circuit where both 5V and 3.3V systems are constructed togeter.


Specifications

Parameter Symbol Conditions Ratings Unit
Operating IC substrate temperature Tc max   +105 °C
Operating temperature Topr   10 to +85 °C
Storage temperature Tstg   30 to +115 °C
DC input voltage VIN max Pins 6, 11, and 12 10 V



Description

The STK740-441 is a separate-excitation step-down chopper regulator hybrid IC for the secondstage circuit and optimal as a 3.3V local power supply for use in logic circuit that includes both 5V and 3.3V systems. This STK740-441 incorporates in the package all the necessary circuits for a chopper regulator including power switch, error amplifier, soft start, shutdown type output short protection, low-voltage malfunction prevention, on/off, and snubber circuits. Therefore, external components required are input and output capacitors and choke coil only and this allows this STK740-441 to be used to construct a large-current (5A) chopper regulator as if a 3-pin regulator were used.




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