LT1249CS8#PBF

Overview

The LT1249CS8#PBF is a power factor controller manufactured by Analog Devices Inc., designed for active PFC applications. It operates within a supply voltage range of 4.75 V to 18 V and features a fixed switching frequency of 100 kHz. The device supports a maximum operating temperature of +100°C and minimum of 0°C, housed in an 8-pin PDIP package with through-hole mounting. Key electrical parameters include a quiescent current of 250 µA, a common-mode rejection ratio (CMRR) of 130 dB, and an input bias current of 15 pA. It delivers an output current of 6 mA per channel and exhibits an input voltage noise density of 80 nV/√Hz.

Feature Summary

• Integrated power factor correction control architecture
• Fixed 100 kHz switching frequency operation
• High common-mode rejection capability
• Low quiescent current consumption

Applications

• Active power factor correction circuits
• AC-DC power supply designs
• Industrial power management systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific lot traceability requirements. Ensure the packaging matches the specified PDIP-8 form factor. Validate that the part number suffix corresponds to the lead-free specification required for your assembly process.

Selection Notes

Select this component when designing systems requiring a dedicated power factor controller with a fixed 100 kHz frequency. Consider its 100°C thermal rating for high-temperature environments. Evaluate the 250 µA quiescent current against system efficiency targets. Ensure the through-hole PDIP-8 package fits the PCB layout constraints compared to surface-mount alternatives.

Part Context

The LT1249 belongs to the LT1249 series of power factor controllers from Analog Devices. It is categorized under PMIC - Power Management ICs. The CS8#PBF designation indicates a commercial grade temperature range and a specific package variant. This part is distinct from operational amplifiers or ADCs in the same manufacturer's portfolio.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.