LTC1148CS-3.3#TRPBF

DC DC Switching Controllers Overview

The LTC1148CS-3.3#TRPBF is a switching voltage regulator controller manufactured by Analog Devices Inc., designed for high-efficiency step-down (buck) converter applications. It operates within an input voltage range of 3.5 V to 20 V and provides a fixed output voltage of 3.3 V. The device features a maximum load regulation of 40 mV and draws an operating supply current of 1.6 mA. It supports switching frequencies up to 250 kHz with a maximum duty cycle of 100%. Packaged in a 14-pin SOIC, it functions as a positive output transistor driver suitable for portable computing and handheld equipment power supplies.

DC DC Switching Controllers Feature Summary

• Fixed 3.3 V output configuration for simplified design
• High efficiency operation to minimize power drain and heat buildup
• Wide input voltage range supporting various battery and system sources
• Integrated 100% duty cycle capability for low dropout performance

DC DC Switching Controllers Applications

• Portable computer power supplies
• Hand-held equipment power management
• Battery-powered systems requiring efficient DC-to-DC conversion
• General-purpose step-down converter designs

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the manufacturer is Analog Devices Inc. or its predecessor Linear Technology. Ensure the part status is active or available through authorized channels, as availability may vary. Cross-reference the Mouser number 584-LTC1148CS-3.3#TRPBF for accurate identification during procurement processes.

DC DC Switching Controllers Selection Notes

Select this component when a fixed 3.3 V output is required from an input range of 3.5 V to 20 V. It is suitable for applications prioritizing efficiency and compact size, such as portable devices. Consider the 1.6 mA supply current and 250 kHz switching frequency for thermal and EMI management. Verify compatibility with external power stages given its role as a controller rather than a complete integrated switch solution.

DC DC Switching Controllers Part Context

This part belongs to the LTC1148 family of high-efficiency step-down converters. It is functionally related to other variants like the LTC1148CS which may offer different output voltages or pin configurations. The CS-3.3 variant specifically targets 3.3 V systems. It shares design principles with other Linear Technology PMICs focused on portable electronics, emphasizing low power consumption and high efficiency in small form factors.

DC DC Switching Controllers Replacement Considerations

Check for direct substitutes within the LTC1148 family offering different output voltages if 3.3 V is not strictly required. Verify pinout compatibility with existing PCB layouts. Consider newer generations of buck controllers from Analog Devices if improved efficiency or lower quiescent current is needed. Ensure any replacement maintains the 3.5 V to 20 V input range and 250 kHz switching capability.