LTC7812IUH#PBF

DC DC Switching Controllers Overview

The LTC7812IUH#PBF is a synchronous Boost+Buck DC/DC switching regulator controller from Analog Devices. It drives all N-channel power MOSFET stages and contains independent step-up and step-down controllers. The device supports two separate outputs or cascaded configurations to regulate output voltage above, below, or equal to the input. Key parameters include an input voltage range of 5V to 38V, a maximum switch frequency of 850kHz, and a maximum duty cycle of 100%. It operates within a temperature range of -40°C to +125°C and is housed in a 32-lead QFN package (5mm x 5mm).

DC DC Switching Controllers Feature Summary

• Supports independent dual-output regulation or cascaded boost-buck topologies.
• Drives all N-channel power MOSFET stages for high efficiency.
• Regulates output voltages relative to varying input conditions.

DC DC Switching Controllers Applications

• Wide input range DC/DC conversion systems
• Cascaded boost and buck regulator designs
• Low IQ power management applications

DC DC Switching Controllers Procurement Notes

Verify component authenticity through authorized Analog Devices distributors. Confirm package integrity and pin alignment prior to assembly. Check current supply status as availability may be restricted. Ensure storage conditions comply with moisture sensitivity levels specified in the datasheet. Validate that the #PBF suffix corresponds to lead-free RoHS compliance requirements for your specific manufacturing process.

DC DC Switching Controllers Selection Notes

Select this controller when designing systems requiring flexible input-to-output voltage relationships. It is suitable for applications where the input voltage may be higher, lower, or equal to the required output. Consider the 850kHz switching frequency for balancing efficiency and passive component size. Ensure external MOSFETs are rated for the expected current and voltage stresses associated with the chosen topology.

DC DC Switching Controllers Part Context

The LTC7812 belongs to a family of high-performance synchronous switching regulators designed for complex power architectures. Unlike standard buck or boost controllers, it integrates both topologies into a single IC. This allows for simplified bill of materials in applications requiring bidirectional voltage conversion capabilities. The IUH variant specifies industrial temperature rating and the QFN package for compact surface-mount integration.

DC DC Switching Controllers Replacement Considerations

Direct substitutes within the same functional family include the LTC7813 series, which offers similar cascaded boost-buck capabilities but may differ in current handling or specific feature sets. Verify pin compatibility and control logic before swapping components. Alternative solutions from other manufacturers require careful evaluation of switching frequency ranges and driver strengths.