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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 8DIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive, Isolation Capable
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：8.2V ~ 25V
- Frequency - Switching：500kHz
- Duty Cycle (Max)：48%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Frequency Control
- Operating Temperature：-40°C ~ 100°C (TA)
- Mounting Type：Through Hole
- Package / Case：8-DIP (0.300", 7.62mm)
- Supplier Device Package：8-PDIP
- Grade：-
- Qualification：-
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Overview
The LT1241IN8#PBF is a high-speed current mode pulse width modulator manufactured by Analog Devices Inc. It operates as a step-down DC-DC switching controller with a fixed switching frequency of 500kHz and a maximum duty cycle of 48%. The device supports positive, isolation-capable outputs and features a single output stage. It requires a supply voltage between 8.2V and 25V and functions within a junction temperature range of 0°C to 100°C. Packaged in an 8-PDIP (0.300 inch) through-hole format, it is designed for off-line and DC/DC converter applications.
Feature Summary
- High-speed current mode pulse width modulation architecture
- Optimized for off-line and DC/DC converter applications
- Contains a temperature-compensated reference and high gain error amplifier
Applications
- Off-line power supplies
- DC/DC converter designs
- Step-down voltage regulation systems
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and PDIP packaging when sourcing. Confirm the manufacturer is Analog Devices Inc., formerly Linear Technology, to ensure authenticity. Check official distributor channels for availability status, as stock levels may vary. Ensure the order matches the exact part number to avoid compatibility issues with existing circuit designs.
Selection Notes
Select this component for applications requiring fixed-frequency current mode control without synchronous rectification. It is suitable for designs needing a simple, robust PWM controller with integrated references. Consider the 500kHz frequency and 48% duty cycle limits when designing transformer or inductor parameters. Ensure the input voltage range aligns with the 8.2V to 25V Vcc specification.
Part Context
The LT1241 series consists of 8-pin, fixed-frequency, current mode pulse width modulators. These devices serve as improved plug-compatible versions of earlier industry standards. The series is engineered to provide reliable performance in demanding power conversion environments, offering enhanced stability and precision compared to legacy components.
Replacement Considerations
The datasheet identifies the LT1241 series as improved plug-compatible versions of industry standard parts. Specific substitute part numbers are not explicitly listed in the provided documentation; consult the official Analog Devices LT1241 datasheet for direct cross-reference information.
