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MFG:SEMTEOH
Part Number: SC1101
MFG: SEMTEOH
Description: The SC1101 is a versatile, low-cost, voltage-mode PWM controller designed for use in single ended DC/D...
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SC1101
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DataSheet
General Description
SC1101 General Description
The SC1101 is a versatile, low-cost, voltage-mode PWM controller designed for use in single ended DC/DC power supply applications. A simple, fixed-voltage buck regulator can be implemented using the SC1101 with a minimum of external components. Internal level shift and drive circuitry eliminates the need for an expensive p-channel, high-side switch. The small device footprint allows for compact circuit design.
SC1101 features include a temperature compensated voltage reference, triangle wave oscillator, current limit comparator, frequency shift over-current 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 SC1101 operates at a fixed frequency of 200kHz, providing an optimum compromise between efficiency, external component size, and cost
SC1101 Maximum Ratings
| Parameter | Symbol | Maximum | Units |
| Input Voltage | VCC to GND | -0.3 to +7 | V |
| Ground Differential | PGND to GND | ± 1 | V |
| Boost Input Voltage | BST to GND | -0.3 to +15 | V |
| Operating Temperature | TA | 0 to +70 | °C |
| Storage Temperature | TJ | -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 |
SC1101 Features
• Low cost / small size
• Switch mode efficiency (90%)
• 1% reference voltage accuracy
• Over current protection
• 500mA output drive
• SO-8 package
SC1101 Typical Application
• Pentium® P55 Core Supply
• Low Cost Microprocessor Supplies
• Peripheral Card Supplies
• Industrial Power Supplies
• High Density DC/DC Conversion
SC1101 Connection Diagram
SC1101
PDF/DataSheet Download
- Datasheet: SC1101
- File Size: 99011 KB
- Manufacturer: SEMTECH [Semtech Corporation]
- Click here to Download
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