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STK730C

Features: • IMST substrate (insulated metal substrate technology)• Efficiency improved (by 10%) by the adoption of MOSFET and SBD technology.• An auxiliary drive power supply is no longer required due to the development of a unique NMOS FET drive circuit. This means that the STK...

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SeekIC No. : 004507989 Detail

STK730C: Features: • IMST substrate (insulated metal substrate technology)• Efficiency improved (by 10%) by the adoption of MOSFET and SBD technology.• An auxiliary drive power supply is no...

STK730C Data Sheet

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Part Number:
STK730C
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:

• IMST substrate (insulated metal substrate technology)
• Efficiency improved (by 10%) by the adoption of MOSFET and SBD technology.
• An auxiliary drive power supply is no longer required due to the development of a unique NMOS FET drive circuit.    
  This means that the STK730C can be used with a single power supply, thus allowing simplification of heinput system.
• Built-in reverse going linear overload characteristic curve overcurrent protection circuit
• Ground line handling is eased even in multi-output power supply structures due to placement of the overcurrent detection resistor on the plus line.
• The STK730C's separate excitation oscillator structure provides high stability in the switching frequency.
• The STK730C's switching operating frequency is set at 125 kHz, which minimizes beating when used in a multiple output structure with STK731 and STK733 type products.


Application

• Power supplies in printers and other office equipment
• Power supplies in robots and other factory automation related equipment
• Power supplies in VCRs and other consumer products
• Secondary side regulators in switching power supplies


Specifications

Parameter Symbol

Rating

Unit

Maximum DC input voltage Vin (DC) max

40
V
Maximum output current IO max

5
A
Thermal resistance j-c

3.5 (SBD 7.2)
/W
Junction temperature Tj max

 150 (SBD 125)
Storage temperature Tc max

 105
Storage Temperature Tstg

 30 to +105

 




Description

The STK730C is a chopper type step-down dedicated 5 V single output regulator that uses a power MOSFET as its switching element and a Schottky barrier diode (SBD) as its flywheel diode.

The STK730C covers the 2 A and higher current regions, regions that are difficult to handle with three terminal step-down regulators. As compared with earlier chopper regulator products that used bipolar transistors,the efficiency of the STK730 C has been further improved by the adoption of MOSFET and SBD technologies, and use of the STK730 C enables further miniaturization and increased performance in the end product since it corresponds to the adoption of a dedicated switching controller IC. Furthermore, due to the development of a unique MOS drive circuit, the STK730C can be used with a single power supply input.

The STK730C can prove useful when standardizing and rationalizing power supply circuit design, since it can handle a wide range of power supply circuits in a number of applications, either as the secondary side regulator in a switching power supply or as the output regulator following AC transformer rectification.




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