LT1070IT#PBF

Voltage Regulators - DC DC Switching Regulators Overview

The LT1070IT#PBF is a high-efficiency switching voltage regulator manufactured by Analog Devices Inc. It supports multiple topologies including boost, buck, Cuk, flyback, forward, and inverting configurations. The device operates with an input voltage range of 3 V to 40 V and provides an adjustable output voltage. It delivers a maximum output current of 5 A with a switch current limit of 2.5 A. The unit features a fixed switching frequency of 40 kHz and a typical static current of 6 mA. It is housed in a TO-220-5 through-hole package and functions within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Supports versatile DC-DC conversion topologies such as boost, buck, Cuk, flyback, forward, and inverting circuits.
• Integrates a shutdown function for power management efficiency.
• Capable of handling high output currents up to 5 A with a robust internal switch.

Voltage Regulators - DC DC Switching Regulators Applications

• Powering ring-tone circuits from variable input voltages
• Flyback switching regulator designs providing isolated outputs
• General-purpose high-efficiency DC-DC conversion systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix #PBF against the manufacturer's latest datasheet to confirm lead-free compliance and RoHS status. Confirm the specific operating temperature grade (I for industrial) matches the application requirements. Check for any recent Product Change Notices that may affect pinout or electrical specifications. Ensure the TO-220-5 package dimensions align with the PCB footprint design. Validate supply chain authenticity through authorized distributors.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a single IC needs to support multiple converter topologies like boost, buck, or flyback. It is suitable for applications requiring up to 5 A output current with an input voltage up to 40 V. Consider the 40 kHz switching frequency for cost-effective passive component selection. The TO-220-5 package aids in thermal dissipation for higher power levels. Compare with the LT1071 if higher voltage ratings are required.

Voltage Regulators - DC DC Switching Regulators Part Context

The LT1070 belongs to the LT1070/LT1071 family of high-efficiency switching regulators. It shares architectural similarities with the LT1170 but differs in switching frequency and voltage ratings. The LT1071 variant offers higher voltage capabilities. This series is designed for flexible power supply designs where topology flexibility is prioritized over high-frequency miniaturization.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LT1071HVIT#PBF: Offers higher voltage ratings (60V input, 75V switch) but lower switch current (2.5A). LT1170IT#PBF: Features a higher switching frequency (100kHz) allowing smaller magnetics, with similar 5A output capability.