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SC1103

Features: • Low cost / small size• Switch mode efficiency (90%)• 1% reference voltage accuracy• Over current protection• 500mA output drive• 5V to 12V Input power sourceApplication• Pentium® P55 Core Supply• Low Cost Microprocessor Supplies•...

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SeekIC No. : 004485410 Detail

SC1103: Features: • Low cost / small size• Switch mode efficiency (90%)• 1% reference voltage accuracy• Over current protection• 500mA output drive• 5V to 12V Input power...

SC1103 Data Sheet

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Part Number:
SC1103
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: 2024/12/28

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Product Details

Description



Features:

• Low cost / small size
• Switch mode efficiency (90%)
• 1% reference voltage accuracy
• Over current protection
• 500mA output drive
• 5V to 12V Input power source




Application

• Pentium® P55 Core Supply
• Low Cost Microprocessor Supplies
• Peripheral Card Supplies
• Industrial Power Supplies
• High Density DC/DC Conversion




Pinout

Connection Diagram


Specifications

Parameter Symbol Maximum Units
Input Voltage VCC to GND -0.3 to 14 V
Ground Differential PGND to GND ± 1 V
Boost Input Voltage BST to GND -0.3 to +26 V
Operating Temperature TA 0 to +70 °C
Storage Temperature TS -45 to +125 °C
Lead Temperature (Soldering) 10 seconds TL 300 °C
Thermal Resistance, Junction to Ambient JA 165 °C/W
Thermal Resistance, Junction to Case JC 40 °C/W



Description

The SC1103 is a versatile, low-cost, voltagemode PWM controller designed for use in single ended DC/DC power supply applications. A simple, fixed-voltage buck regulator can be implemented using the SC1103 with a minimum of external components. Internal level shift and drive circuitry eliminates the need for an expensive pchannel, high-side switch. The small device footprint allows for compact circuit design.

SC1103 features include a temperature compensated voltage reference, triangle wave oscillator, current limit comparator, frequency shift overcurrent protection, and an internally compensated error amplifier. Pulse by pulse current limiting is implemented by sensing the differential voltage across an external resistor, or an appropriately sized PC board trace.

The SC1103 operates at a fixed frequency of 200kHz, providing an optimum compromise between efficiency, external component size, and cost.




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