Description

The CB255-50 is an electronic component model in the product category of circuit breakers. It is a CMOS linear voltage regulator with low quiescent current, low drop out voltage, and better than 1% initial output voltage accuracy. The quiescent current is typically 150µA at light loads and only 165µA at 500mA, making it 5% more efficient than equivalent Bi-CMOS devices that can waste up to 25mA at 500mA.

Specifications and features

The CB255-50 has the following specifications and features:

• 500mA output current capability
• 500mA peak in SOT-23 package
• 500mA continuous in MSOP package
• 500mV maximum dropout voltage at full load
• Excellent line and load regulation
• Stable with any output capacitor
• Ultra low noise with optional bypass capacitor
• Fast power-up with bypass capacitor
• “Zero” current in Shutdown mode
• Thermal Overload Protection
• Foldback Current Limiting Protection
• Reverse current protection

Application Scenarios

The CB255-50 is suitable for various applications including:

• Notebook, and palmtop computers
• Cell phones and battery powered devices
• Consumer and personal electronics
• PC Card Vcc and Vpp regulation and switching

Comparison

The CB255-50 offers the following advantages:

• Low quiescent current
• Low drop out voltage
• High efficiency
• Precise output voltage accuracy
• Wide range of applications

There are no specific disadvantages mentioned for the CB255-50.