LT1575CN8-5#PBF

Voltage Regulators - Linear Regulator Controllers Overview

The LT1575CN8-5#PBF is a single controller IC for low dropout regulators, housed in an 8-pin PDIP package. It drives external N-channel MOSFETs to produce ultrafast transient response and low dropout voltage. The device features a fixed 5V output with ±0.6% tolerance at room temperature and ±1.0% over the operating range. Key electrical parameters include a typical quiescent current of 12.5mA, a line regulation of 0.01%/V, and a load regulation of 1mV. It operates within an ambient temperature range of 0°C to 70°C.

Voltage Regulators - Linear Regulator Controllers Feature Summary

• UltraFast transient response eliminates the need for tantalum or electrolytic bulk output capacitors
• High side sense current limit amplifier activates fault protection timer circuit
• Multifunction shutdown pin provides latchoff, overvoltage protection, and thermal shutdown capabilities

Voltage Regulators - Linear Regulator Controllers Applications

• Pentium processor supplies
• PowerPC supplies
• Microprocessor supplies stepping from 5V to 3.3V or 3.3V to lower voltages
• GTL termination
• Low voltage logic supplies

Voltage Regulators - Linear Regulator Controllers Procurement Notes

Verify the specific suffix CN8 corresponds to the 8-lead PDIP package when ordering. Confirm RoHS compliance status through official Analog Devices documentation prior to procurement. Ensure the selected external N-channel MOSFET meets the required VGS(th) specifications for proper gate drive operation.

Voltage Regulators - Linear Regulator Controllers Selection Notes

Select this component for applications requiring high-speed load transient response without bulky output capacitance. The fixed 5V version simplifies design by removing external feedback resistors. Ensure the external MOSFET RDS(ON) selection aligns with desired dropout voltage requirements. Verify that the input voltage range supports the necessary gate drive compliance for the chosen pass transistor.

Voltage Regulators - Linear Regulator Controllers Part Context

This part belongs to the LT1575/LT1577 family of ultrafast transient response, low dropout regulator controllers. While the LT1575 is a single channel device, the LT1577 offers dual channels in a 16-pin package. Both families utilize external N-channel MOSFETs as source followers to achieve performance levels unattainable by traditional monolithic linear regulators.

Voltage Regulators - Linear Regulator Controllers Replacement Considerations

LT1575CS8-5#PBF (SOIC-8 package variant)